MEASURES  OF  PROPER  MOTION  STARS 


A     : 
k-<Vx 


MADE  WITH  THE 


40-INCH  REFRACTOR  OF  THE  YERKES  OBSERVATORY 


IN  THE  YEARS  1907  TO  1912 


BY 


S.  W.  BURNHAM 


WASHINGTON,  D.  C. 

Published  by  the  Carnegie  Institution  of  Washington 
1913 


MEASURES  OF  PROPER  MOTION  STARS 


MADE  WITH  THE 

40-INCH  REFRACTOR  OF  THE  YERKES  OBSERVATORY 


IN  THE  YEARS  1907  TO  1912 


BY 


S.  W.  BURNHAM 


WASHINGTON,  D.  C. 

Published  by  the  Carnegie  Institution  of  Washington 
1913 


CARNEGIE  INSTITUTION  OF  WASHINGTON 
PUBLICATION  No.  168 


HAf.TIMonF:.  MT>.,  U.  8.  A. 


INTRODUCTION 


The  measures  which  follow  were  made  with  the  4O-inch  refractor  of  the  Yerkes  Observa- 
tory in  the  years  1907  to  1912.  The  mean  results  of  prior  measures  with  the  same  instrument  in 
1897  to  1906  are  given  in  the  General  Catalogue  of  Double  Stars  (Carnegie  Institution  of  Wash- 
ington, 1906) .  These  observations  have  been  made  in  the  usual  way,  fully  described  heretofore ; 
and,  as  far  as  possible,  each  star  has  been  measured  on  at  least  three  nights.  The  most  probable 
value  of  one  revolution  of  the  micrometer-screw,  as  found  from  a  large  number  of  observations, 
is  9"  666;  and  this  value  has  been  used  throughout  the  work  at  the  Yerkes  Observatory. 

The  larger  number  of  stars  selected  for  measurement,  given  as  Part  II  of  this  volume,  are 
taken  from  the  General  Catalogue  of  Double  Stars  for  reasons  which  will  generally  be  apparent 
from  the  notes  and  observations  cited  in  that  work.  By  far  the  greater  number  of  stars  given  in 
the  General  Catalogue  as  having  proper  motion  are  not  included  here,  because  the  obser- 
vations there  cited  are  of  recent  date  and  further  measures  are  not  needed  at  this  time.  Many 
hundred  examples  of  proper  motion  stars  of  this  kind  will  be  found  there,  and  in  that  respect 
this  work  is  supplementary  to  the  General  Catalogue. 

The  other  list,  forming  Part  I,  includes  all  other  stars  for  which  prior  observations  with  the 
micrometer  have  been  made.  Unfortunately  the  early  work  in  this  field  is  confined  to  a  few 
observers,  the  principal  ones  being  Otto  Struve,  Engelhardt,  and  Ball.  For  some  of  the  other 
stars  recent  photographic  positions  have  been  found,  but  in  most  cases  the  time-interval  is  too 
short  to  give  a  very  accurate  value  of  the  relative  change.  This  objection  will  be  removed  by 
observations  to  be  made  hereafter. 

The  small  stars  from  Zone  26°  of  the  Oxford  Astrographic  Catalogue  are  taken  from  a 
list  prepared  by  Mr.  G.  H.  Hamilton  of  the  University  Observatory.  This  list  gives  the  place, 
proper  motion,  and  photographic  magnitude  of  some  fifty  stars,  principally  below  the  magni- 
tude limit  in  Argelander,  from  plates  taken  for  the  most  part  in  1907  and  1908,  the  proper 
motions  being  derived  from  a  comparison  with  other  plates  made  a  few  years  earlier.  All  of 
these  were  put  on  the  observing-list  and,  as  far  as  possible,  compared  with  one  or  more  fainter 
stars  in  the  field.  In  a  few  instances  there  were  no  comparison  stars  within  the  range  of  the 
micrometer. 

Boss  (Astronomical  Journal,  604)  has  called  attention  to  a  group  of  thirty-nine  bright 
stars,  principally  in  Taurus,  which  appear  to  have  a  common  proper  motion  of  approximately 
o"io  in  the  general  direction  of  about  100°.  These  stars  were  placed  on  the  observing-list,  and 
nearly  all  of  them  connected  with  faint  stars  in  the  field  for  verification  of  the  proper  motions 
given  from  meridian  positions.  I  have  noted  three  other  stars,  overlooked  by  Boss,  which  evi- 
dently belong  to  the  group.  They  are  37  Tauri,  55  Tauri  (0^79)  and  O282. 

When  there  are  prior  measures  of  any  of  the  comparison  stars  observed  here  which  seem 
to  warrant  a  conclusion  as  to  the  movement  of  the  proper  motion  star,  the  result  is  given  and 
compared  with  former  values  derived  from  observations  with  the  meridian  circle.  When  the 
proper  motion  is  small,  say  a  tenth  of  a  second  of  arc  or  less,  the  separate  determinations  from 

meridian  positions  by  the  leading  authorities  on  this  subject  are  apt  to  be  discordant  and  incon- 

f  ir*t  >f /"•/"• 
960566          ;:: 


111 


Introduction 


sistent,  in  some  instances  to  the  extent  of  having  the  proper  motion  star  moving  in  the  directio 
of  three  different  quadrants. 

When,  as  usually  happens,  the  measures  of  small  stars  in  the  field  give  a  more  or  less  diffci 
ent  movement  from  that  taken  from  the  star  catalogues,  it  would  be  manifestly  absurd,  and  i 
effect  begging  the  whole  question,  to  ascribe  the  difference  to  the  proper  motion  of  the  faint  stu 
There  is  at  this  time  no  relevant  evidence  of  any  character  that  any  really  faint  star,  not  assc 
ciated  and  moving  with  a  larger  star,  has  any  sensible  proper  motion  at  all.  Of  course  this  do< 
not  necessarily  refer  to  all  telescopic  stars  visible  in  small  apertures.  Occasionally  a  star  <. 
faint  as  the  eleventh  magnitude  has  been  found  with  a  small  motion,  but  these  instances  ai 
rarer  that  one  would  expect.  For  many  years  I  have  been  hunting  for  a  faint  star  with  son 
certain  proper  motion,  but  so  far  without  success;  and  the  observations  of  others  to  this  tin- 
give  only  negative  results.  It  goes  without  saying  that  every  star  in  the  heavens,  down  to  tt 
limit  of  the  largest  aperture,  must  have  some  proper  motion  as  well  as  parallax;  and  it  is  equal! 
obvious  that  the  one  is  as  negligible  as  the  other  in  all  observations  of  relative  positions  with  ar 
astronomical  instrument  now  in  use.  Possibly  the  present  series  of  measures,  when  followed  t 
a  half  century  or  more  from  this  time,  may  show  that  some  one  of  the  small  stars  now  measure 
has  a  real  and  substantial  movement  in  space.  I  sincerely  hope  this  may  be  the  result  of  furth< 
investigations,  but  it  will  require  careful  and  long-continued  measures  with  the  micrometer,  ar 
perhaps  extended  to  other  near  faint  stars  not  yet  observed,  to  establish  and  confirm  the  su 
pected  movement.  Photography  will  doubtless  contribute  to  this  end,  but  the  exposures  w: 
necessarily  have  to  be  much  longer  than  those  given  to  the  plates  of  the  several  Astrograpli 
Catalogues  in  order  to  reach  the  desired  lower  magnitudes.  It  should  be  remembered,  in  dcalir 
with  magnitudes  from  these  catalogues,  and  with  photographic  results  generally,  that  the  vahn 
given  make  the  stars  from  one-half  to  more  than  a  whole  magnitude  fainter  than  the  usual  visu 
estimates  of  experienced  observers. 

All  the  star  places  given  are  for  1880  unless  otherwise  stated.  For  the  greater  conv 
nience  of  those  who  will  use  the  observations  hereafter,  at  the  telescope  or  in  the  library,  tl 
original  places  as  given  in  the  General  Catalogue  of  Double  Stars  have  been  retained,  and  tl 
stars  in  Part  I  reduced  to  the  same  epoch.  The  total  number  of  measures  in  the  present  work 
about  9500. 

S.  W.  B. 


PART  I 

MEASURES  OF  PROPER  MOTION  STARS 


Bradley  3212     (6. 4...  9. 4) 
R.  A.  o"  om  24"        Dec!.  +  28°  22' 

AandB 
1907.772  250^27  I58'.'i3 


.788 
.791 

250.34 
250.23 

158.15 
158.48 

1907.78 

250.28 

158.25 

A  and  CD 

1907.772 
.788 
.791 

184^60 
184.80 
184.95 

I53':62 
I53.5I 
153.44 

1907.78 


184.78 


153.52 


C  and  D  (10.8  .  .  .  10.9) 
1907.772     2il!o       3'.'24 
.788     208.7       3.27 


1907.78 


209.8 


3.25 


We  have  the  following  positions  of  AB : 


1853.82 

244°32 

143"  16 

411 

O2 

1863.81 

245.50 

146.21 

2n 

O2 

1884.11 

247.70 

151.84 

in 

H2 

1886.97 

248.22 

151.89 

2n 

Eng 

1895.03 

249.  16 

154-99 

4" 

Eng 

1907.78 

250.28 

158.25 

3ii 

P 

These  measures  give  for  the  corrected  proper  motion  of 
Bradley  3212: 

o"403    in     i I3?9 

This  has  been  given  from  meridian  observations : 
Auwers         o'/4i5    in     ii7?7 
Porter  0.412    in     115.9 

Boss  0.419    in     114.9 

Engelhardt  does  not  mention  C  as  double,  and  it  is  uncertain 
whether  his  measures  relate  to  C  or  D,  these  stars  being  sen- 
sibly equal  in  magnitude,  and  therefore  the  relative  motion  is 

of  doubtful  value: 

1886.97  i82?28  156^41  2n  Eng 

1894.99  183.42  155.66  2n  Eng 

1907-78  184.78  153.52  3n  p 


DM  (40°)  5     (7. 2.. .10. i) 
R.  A.  o"  2m  38'        Decl.  +  40°  10' 

A  andB 
1909.496  280^80  74725 


•  512 
•SIS 


280.90 
281.05 


73.8i 
74.23 


1909.50 


'.92 


No  other  measures  of  this. 

A  and    P  483 


1909.551 
.570 


81^78 
81.68 


145783 
145.91 


1909.56                81.73  145.87 

P  483  is  the  7.0  m  star,  DM  (40°)  7.  The  meridian  positions 
indicate  some  change : 

1879           8o?2            i43'.'8  A.G.Bonn 


DM  (63°)  3     (8. 7.. .11.0) 
R.  A.  o"  3™  9"       Decl.  +  63°  17' 


1909.496 
.512 
•SIS 


68.38 
68.58 


130.56 
130.51 


74.10 


1909.51  68.56  130.41 

This  is  one  of  the  red  stars  in  Schjellerup;  apparently  with- 
out sensible  proper  motion. 

1880.32  68?45  130715  2n  Bl 

There  are  several  stars  nearer  than  this  ;  the  nearest  is  12.8  m  : 
1909.496  24°4  24':8i 

.512  23.6  24.78 

•515  24.9  24.84 


1909.51 


24.3 


24.81 


Y  Pegasi 

R.  A.oI17m3a        Decl. +  14"  31' 

A  and  B  (11.8) 
1907.502  28s?so  163^75 


.523 
•  540 


285.38 
285.18 


163.51 
163.05 


1907.52  285.35  163.44 

The  only  other  measure  of  this  is : 

1879.51  285^6  i6i':82  211  P' 

These  positions  give  for  the  proper  motion  of  the  large  star : 
o"o63    in    8i?8 

The  value  of  this  movement  from  the  meridian  observations 
seems  to  be  very  uncertain : 

Auwers  (Fund.)  o"oi6    in    2i8?o 

Auwers  (A.  N.  3508)     0.018    in    254.0 


Newcomb  (Stand.) 
Newcomb  (Fund.) 
Boss 


0.003  in  237.5 
o.on  in  157.7 
0.013  in  270.0 


Burnham:   Measures  of  Proper  Motion  Stars 


-H- 


If  there  is  no  unusual  error  in  the  early  measures,  the 
motion  is  in  the  opposite  direction  from  that  previously  given. 
Repeating  these  measures  after  a  suitable  interval  will  settle  the 
question.  Of  course  there  is  no  probability  that  the  small  star 
has  any  motion.  It  has  a  small  companion  which  I  have 
measured : 

B  and  C  (n.8.  ..12.4) 


1907.502 

I97°3 

2o"49 

.523 

195-7 

20.35 

•540 

196.0 

20.28 

1907.52 


196.3 


20.37 


Nothing  else  of  this  but  a  rough  setting : 
I99°3:  2iTo  (1879. 47) 


Oxford  (Z  26°)  259     (9-8...) 
R.  A.  o"  to™  50:50       Decl.  +  25°  17'  16*0 

The  place  of  this  star  from  the  Oxford  Astrografhic  Cata- 
logue is  for  1900,  from  plate  taken  1907.79.  From  a  comparison 
of  this  with  an  earlier  photograph,  the  proper  motion  is  given: 

0^159    in    99?o 

This  star  is  DM  (25°)  23  (9.2m).  A  comparison  of  the 
above  place  with  that  in  A.  G.  Camb.  implies  a  small  proper 
motion.  The  only  available  comparison  star  is  problably  too 
faint  to  appear  on  the  photographic  plate. 

A  and  B  (9. 5... 12. 6) 
1910.529  3o8?go  111*87 


Groombridge  34 

R.  A.  o"  I21"  33'        Decl.  +  43°  21' 
A  and  B 


1907.463 
.482 

.485 
.502 
.523 

56.38 
56.65 
56.25 
56.57 

39"02 
38-87 
38.68 
38.66 
38.90 

1907.49 

56.47 

38.83 

A  and  C 

1907.463 

I20?30 

28^30 

.485 

120.35 

28.14 

.502 

"9-93 

27.75 

.523 

121.25 

27.99 

1908.518 

125.40 

25.70 

.520 

124-73 

25.68 

•  537 

124.30 

25-85 

•559 

124.77 

25.42 

•573 

125.40 

25-66 

1909.406 

129-75 

23-77 

•  512 

129.24 

23-47 

•515 

129.40 

23-81 

•  570 

130.08 

23.68 

1910.471 

134-73 

21.90 

•  473 

134-80 

22.23 

•529 

135-90 

21.40 

.605 

136.41 

21.  8l 

The  principal  stars  make  a  system  of  the  61  Cygni  class.    The 


i  ne  principal  stars  make  a  system  ot  tne  01  ( 
difference  in  the  proper  motions  is  very  small. 


-570 
.589 


309-13 
309.05 


111.67 
ill. 06 


1910.56 


309.03 


I". 53 


1860.18 

52?go 

4o"os 

in 

02 

1868.50 

52.97 

39-67 

2n 

O2 

1875.41 

53.84 

39-61 

2n 

O2 

1882.67 

54-57 

39.41 

2n 

O2 

1905.88 

56.25 

38.80 

Russell 

1907.49 

56.47 

38.83 

5" 

P 

Oxford  (Z  26°)  355        (l 
R.  A.  o*  12™  29?8i        Decl.  +  25°  57'  7?6 

This  place  (for  1900)  is  from  the  Oxford  Astrografhic 
Catalogue  from  a  plate  taken  1907.79.  From  a  comparison 
with  an  earlier  plate,  the  proper  motion  is  given : 

oTi86    in    36^9 

This  is  identical  with  the  9.4  m  star,  DM  (25°)  26.  Not  in 
A.  G.  Camb.  The  two  comparison  stars  measured  should  be  on 
the  photographic  plates. 


The  time  of  the  measures  of  the  fixed  star  is  too  short  to 
make  any  correction  to  the  recognised  proper  motion  of  A. 
This  will  be  done  from  later  measures. 

Russell 

Russell 


1904.98 

"2?57 

34"6s 

1006.78 

118.10 

30.16 

1907.49 

120.46 

28.04 

4" 

1908.54 

124.92 

25-66 

5" 

1909.52 

129.62 

23-68 

411 

1910.52 

I35-46 

21.83 

4n 

1910.529 
-589 


A  and  B  (9.5. ..10.0) 

i»°73 
199-75 


1910.56  199.74 

A  and  C  (10.0) 


1910.529 
.589 
1910.56 


353-00 
352-8S 

352-92 


80.02 


I26T63 
126.36 

126.49 


The  positions  by  Russell  are   from  a  photographic  plate. 
(Man.  Not.  Dec.  1906.) 

Some  of  the  values  of  the  proper  motion  are: 
A.  G.  Bonn  2^827    in    82?3 

Kiistner  2.858    in    81.9 

Groombridge         2.888    in    82.5 


9  Cell    (6. 3... n. 7) 
R.  A.  o"  16™  43"       Decl.  — 12°  53' 


1909.703 
•  725 
•744 

300?32 
300.03 
300.20 

185:02 
184.96 
185.28 

1909.72 

300.18 

185.09 

Burnham:   Measures  of  Proper  Motion  Stars 


No  other  measures  of  the  small  star.    The  proper  motion  of 


9  Ceti  is  given : 


Auwers 
Paris 
Porter 
Boss 


0^387  in  8o?7 

0.389  in  82.5 

0.385  in  81.0 

0.397  in  80.0 


DM  (17°)  57     (9. 6...  10.9) 
R.  A.  o"  17™  IIs        Decl.  +  37°  55' 


1909-573 
.589 

•592 


4-SS 
4-50 


63"47 
63.48 
63.57 


1909-58 


4-49 


63-51 


By  mistake  Ball  measured  this  star  instead  of  the  variable 
star  which  is  ,31"  /. 

I877.59  4°47  64"90  in  Bl 

1878.40  4.07  63.48  2n  Bl 

Evidently  little  or  no  change. 


R  Andromedae     (8. 3...  10.9) 
R.  A.  o"  17™  42'        Decl.  +  37°  55' 


1909.589 
•  592 


144-33 


84"69 
84.49 


1909.59 


144.32 


84.59 


The  principal  star  DM  (37°)  58,  is  variable  and  reddish. 
The  measures  by  Ball  of  the  last  preceding  star  were  intended 
for  R  Andromedae. 


DM  (30°)  89     (9.0.  ..9.4) 
R.  A.  o"  32™  26"        Decl.  +  30°  22' 

Abetti  (A.  N.  4461)  finds  for  this  small  star,  near  8  Andro- 
medae, a  proper  motion  of : 

o"26o    in    26s?6 

There  is  no  near  suitable  star  for  comparison.    I  have  there- 
fore connected  it  with  the  9.3  m  star  DM  (30°)  90 : 


1911.471 
•  509 

•  545 

121  ?2O 
121.40 
121.57 

233"97 
233.43 
233.51 

1911.51 

121.39 

233.64 

For  comparison  there  is  only  the  following : 

1875  I22?3  227^7  A.  G.  Camb. 

1895.8        122.3  232.5  Oxford  (photo.) 

For  the  photographic  position,  a  scale  value  of  300*0  is 
applied  to  the  difference  of  the  measured  coordinates.  The  two 
positions  are  not  very  accordant.  The  first  compared  with  the 
measures  would  imply  a  proper  motion  of  o"ig  in  270°,  while 
from  the  other  it  is  o"25  in  230°. 


54  Pitcium     (6.1.  .  .11.0) 
R.  A.  o"  33™  7"        Decl.  +  20°  36' 


1907.444 

9i°25 

12  I  "76 

.485 

91-75 

122.40 

.502 

91.63 

122.  OO 

•523 

9I.9S 

122.06 

1907.49  91.64          122.05 

The  following  are  all  the  measures  of  this  star: 

1852.69  104?  28  oS'rsi  in  OS 

1866.92  100.47  105.27  in  O2 

1907.49  91.64  122.05  4n  p 

The  proper  motion  of  the  principal  star  is : 

Measures  o"6n  in  23i?4 
Auwers  0.601  in  232.7 
Boss  0.596  in  231.0 


DM  (33')  99     (8. 5... 9.5) 
R.A.o"37ra7'        Decl.  +  33°  12' 

Prof.  Abetti  (A.  N.  4453)  has  called  attention  to  the  proper 
motion  of  this  8.5m  star,  which  he  finds  to  be : 
0*480    in    315?! 

This  is  obtained  by  comparing  it  with  a  star  of  the  same 
magnitude  about  &°5  following,  and  9^5  south.  This  star  is 
DM  (32°)  129.  Both  stars  have  good  meridian  positions,  with 
an  interval  of  nearly  forty  years,  and  the  proper  motion  found 
results  therefrom,  assuming  the  comparison  star  to  be  prac- 
tically fixed.  There  is  a  better  and  much  nearer  star  for  this 
purpose  of  only  9.5  m,  and  that  is  DM  (32°)  120.  It  is  safe  to 
infer  that  a  star  of  this  magnitude  has  no  motion  which  need 
be  taken  into  account  in  the  micrometer  measures.  The  fol- 
lowing measures  connect  the  two : 

DM  (33°)  99  and  (32°)  120 


1910.895 

l8l?20 

286:'49 

.931 

181.18 

286.05 

•933 

180.89 

286.11 

1910.92 

181.09 

286.22 

The  only  positions  for  comparison  are : 

1855  179°  324*  DM 

1894.7  181.8  292.0  Potsdam 

From  these  it  may  be  inferred  that  the  star  in  question  has 
some  motion,  in  declination  at  least.  Further  measures  with 
the  micrometer,  after  a  suitable  interval  of  time,  will  settle 
the  question,  and  give  a  definite  value  to  the  movement. 

There  is  another  DM  star  of  about  the  same  magnitude, 
8.3  m,  nearly  preceding,  and  near  enough  in  declination  to  be 
measured  directly  with  the  micrometer: 

DM  (33°)  99  and  (33°)  96 
A  RA  A  Decl. 


1825 

—  105!  4 

+   7" 

Weisse 

1855 

105.2 

54 

DM 

1894.7 

104.7 

39-8 

Potsdam 

1910.9 

104.5 

40.2 

P 

Bttrnham:   Measures  of  Proper  Motion  Stars 


18  Cfti     (6.0.  ..12.3) 
R.  A.  o*  39m  27'       Decl.  —  13°  32' 


1909.703 
.725 
•  744 


232:15 
232.15 
232.77 


76797 
76.89 
77-17 


1909.72  232.36  77.01 

No  other  measures.    The  proper  motion  of  18  Ceti  is  given : 
Auwers         0:223    in    I97?p 
Paris  0.216    in    190.9 

Porter  0.210    in    198.3 

Boss  0.200    in    191.4 


t  Andromedae     (4. 2. ..15. 2) 
R.  A.  o*  40™  59'       Decl.  +  23°  37' 

A  and  B 
1910.760  349?!  28:52 

•  777  349-1  28.42 
.780           348.7               28.41 

1910.77  349-0  28.45 

A  and  C  (13.5) 

1910.760  229^97  95*83 

•  777            230.32  96.75 
.780            229.13  96.71 

1910.77  229.81  96.43 

A  and  D  (10.7) 

1910.760     257?66     168:29 

•777     257.80     167.71 

.780     257-56     167.78 

1910.77  257.67  167.93 

No  other  measures  of  these  stars.    The  proper  motion  of 
;  Andromedae  is  given  from  meridian  observations : 
Auwers         0:138    in    238?7 
Boss  0.129    in    231.8 

DM  (69°)  45     (7-5...IO.O) 
R.A.o"42"o'       Decl. +  69°  47' 

1907.750  296:22  65:10 

.769  296.53  65.47 

.772  296.27  65.24 

The  only  other  position  of  the  lorn  star  is: 

1893-15  30i?i7  62:72  2n  Eng 

1907.76  296.34  65.27  3n  p 

The  correction  to  the  proper  motion  is  small : 
Measures        0:408    in    54?o 
Stumpe  0.402    in    66.4 

Greenwich      0.422    in    59.1 

LaUnde  1299     (5.9..  .10.5) 

R.  A.  o*  42m  5'        Decl.  +  4"  40' 

1909.703  20o?95  194:61 


.722 
•  725 


200.93 
200.93 


194-67 
194-88 


1909.72 


200.94 


194-72 


No  other  measures  of  this.    The  principal  star  has  a  large 
proper  motion : 

Newcomb      i''353    in     147  ?8 
Porter  1.353    in    146.9 

Boss  1.433    in     145-7 


8  Piicium     (4.6.  ..13.2) 
R.  A.  o"  42™  27'        Decl.  +  6°  56' 


1911.663 
.720 
.736 

•  755 


15-88 
15-60 
15.17 
15-33 


132-53 
132.42 
131.76 
132.14 


1911.72 


15-50 


132.21 


No  other  measures.    The  proper  motion  is  given : 
Auwers        o'!o6g    in    I26?7 
Newcomb     0.092    in    118.6 
Boss  0.093    in     118.3 


64  Fiicium     (5. 3.. .12. 7) 

R.  A.  o"  42™  40'        Decl.  +  16°  24' 

A  and  B 


1911.720 
•  755 
•775 


322.20 
322.32 


68"97 
68.79 
69.12 


1911.75      322.39 

A  and  C  (13.1) 
1911.720 
•755 
•775 


164.58 
165.23 


68.96 


78:60 
79-41 
78.83 


I9II-75 


164.? 


78.95 


No  other  measures.    From  meridian  observations  the  proper 
motion  is: 

Auwers         0:198    in     i8s?o 
Boss  0.204    in    185.7 


Lalande  1532      (7. 5... 9. 8) 
R.A.oh48™36'        Decl. +  23°  27' 


1907.731 

•  750 

•  772 
.788 


215.62 
215.62 
215-93 


61:63 
61.78 
62.09 
61.86 


2n 
4" 


Eng 


The  only  other  measure  is  : 

1893.05  2i6?57  65:79 

1907.76  215.75  61.84 

Hence  the  proper  motion  of  the  principal  star  is : 
0^276    in    229?! 

Some  of  the  results  from  meridian  observations  are : 

Stumpe  0:250    in    232?o 

Paris  0.242    in    229.0 

Porter  0.286    in    235.9 


Burnham:   Measures  of  Proper  Motion  Stars 


DM  (66°)  75     (8.8.  ..ii. 8) 
R.  A.  o"  50"'  24,"        Decl.  +  67°  3' 

A  and  B 

1909.496  226?oo  7o"63 

.515  226.13  70-7° 

.570  226.18  70.53 


1909.53             226.10  70.62 

The  principal  star  sometimes  called  red,  but  only  reddish 
now.    Change  is  doubtful. 

1877.83           225?44             71*30  2n            Bl 

A  and  DM  (66°)  74 
1009.570  34i°8$  I59"84 

.573  341.82  159-77 

1909-57  34I-83  iS9-8o 

The  meridian  observations  give  this  relation  : 

1874.5  341  °7  161*4  A.  G.  Chris 

The  apparent  change  in  the  distance  of  this  8.8  m  star  is  not 
likely  to  be  real. 

25  Ceti     (5.9.  ..12.3) 
R.  A.  o"  56™  59"        Decl.  —  5  °  29' 
1911.755  241^07  109*37 

•  775  24LI7  108.44 

.777  241.10  108.84 

1911.77  241.08  108.88 

No  other  measures.  The  proper  motion  is  : 
Auwers  0*163  in  236?5 
Boss  0.152  in  228.3 

\iCassiopelae     (5...  10.  8) 
R.  A.  i"  o1"  22"        Decl.  +  54°  20' 
A  and  B 
2I7?93  187*32 


1907.482 
•485 

.502 

•  523 
1910.493 

•  529 

•  570 

For  comparison  we  have 

1855.34 

165.30 
188.15 


217.58 
217.85 
217.85 

221.22 
221.33 
221.20 


1856.88 
1881.93 
1907.50 
I9I0.53 


217.80 
221.25 


238*89 

235-65 
190.29 
187.36 
190.53 


187.35 
187-49 
187.29 

190.43 
190.60 

190.55 

l6n 

4n 
2n 
4n 


02 
O2 
O2 


From  the  large  number  of  nights  in  the  first  position  by  O2, 
the  resulting  proper  motion  should  have  a  high  degree  of  ac- 
curacy. As  would  be  expected  in  a  star  moving  at  this  rate, 
the  correction  is  small: 

3^789    in     II4?5 

3.757    in     115.0 

3.759    in    114.4 

3.759    in    114.5 


Measures 

Auwers 

Newcomb 

Boss 

Other  small  stars  in  the  field  are : 
AC  1907.463  I45°30 

Cc  1007.463  113.80 

Aa  1907.463  144.78 


4.19 
87.71 


80  Pigcium     (6.O. .  .9.8) 
R.  A.  i*2raiiB       Decl. +  5°  i' 


1907.750 

.769 
.772 


128.96 
129.15 


159.72 
159.12 
159.06 


The  small  star  is  DM  (4°)  192.    These  are  all  the  measures: 
1853.93  132^72  152*22  in  OS 

1868.76  131.68  153-84  m  O2 

1882.69  130.59  155-82  in  O2 

1907.76  128.98  I59-30  3"  P 

These  positions  give  for  the  proper  motion  of  the  large  star: 
0*230    in    255?8 

This  motion  from  meridian  positions  is  larger: 
Auwers         0*339    in    239^2 
Porter  0.350    in    240.7 

Newcomb     0.318    in    237.5 
Boss  0.327    in    236.3 

It  is  not  probable  that  the  small  star,  9.5  m  in  DM,  has  any 
sensible  motion.  To  determine  this  hereafter,  I  have  measured 
a  third  star : 

A  and  a  (12.5) 

1907.769  286^43  86*20 

.772  286.33  86.04 


1907.77 


286.38 


86.12 


T]  Ceti     (3. 5...  10. 2) 
R.  A.  i"  2™  33"        Decl  —  10°  49' 


1907.636 
.638 
.673 


304.45 
304.45 


The  only  measure  for  comparison  is : 
1879.88  304°50  225*22 

1907-65  304-57  233.53 

Giving  for  the  proper  motion  of  A: 
Measures  0*299  in 
Auwers  0.219  in 
Newcomb  0.246  in 
Boss  0.247  '" 


233-57 
233-55 
233-46 


an 

3" 

I26?4 

125-5 
120.7 

122.6 


0  Cassiopeiae     (4. 6... 10.5) 
R.A.  i"3m48'        Decl. +  54°  31' 

1907.463  I34°7o  I45''55 

.      .482  I34-87  145-50 

•485  134-75  145-79 

The  several  measures  are: 

1853.50            131 °8o  I54''6>  2n 

1881.15            133-13  149-64  m 

1907.48           134-77  I45-6I  3n 

The  proper  motion  of  9  Cassiopeiae  is : 

Measures        0*221     in    92^7 
Auwers  0.207    in    96.7 

Boss  0.230    in    94.5 


O2 
O2 


Bnrnham:   Measures  of  Proper  Motion  Stars 


Lalande  2062     (7.7.  .  .9.4) 

Lalande  2387      (8.  5...  10.  2) 

R.A.i11 

3™  52'        Decl.  +  42°  18' 

R.  A.  i"  13™  I' 

Decl.  — 

9°  33' 

A  and  B 

1907.865 

59?  13 

162:00 

1907.791 

298?  18            154:16 

8.000 

59-23 

162.64 

7.807 

298.28            153-95 

8.079 

59.38 

162.50 

7-848 

8.102 

298.25            154-46                                 „, 
208.  «            DU.U                                 Theonly 

measures  are  : 

1893.94            6o?27 

i  57"  04 

2n 

Eng 

B 

and  C  (9.4.  ..12.0) 

1907 

98             59-25 

162.38 

3" 

P 

1907.848 

8.102 

224?27                    34^5 

Giving  for  the  proper  motion  : 
224.40              34-54                                                                                   . 

it-i      OTT"»T 

1907.97              224.33  34-54 
These  are  all  the  measures  of  AB  : 

1893.12           297°"            155*34  2n           Eng 

1907.89           298.26           154.15  4n            P 

From  which  the  proper  motion  of  the  larger  star  is : 
0*225    in    228^6 

The  meridian  values  are : 

Stumpe  0*221  in  200?3 

Paris  0.228  in  208.8 

Porter  0.261  in  216.5 

38  Ceti     (6.0.  ..12.3) 

R.  A.ih8m42>        Decl.  — i°  37' 

A  and  B 

1909.570  275?8s  114*00 

.627  275.45  114.40 

.649  275.32  113-86 


The  meridian  value  is  probably  too  large : 

Paris  0:585    in    2o6?2 

Porter  0.589    in    212.5 


8  Casslopeiac     (3.0. ..II. 7) 
R.  A.  i"  I7m  59'       Decl.  +  59°  37' 


I909-5I5 

•  570 

•  573 


67.18 
67.18 


136*12 
136.04 
135-88 


1009.55 


67.18 


136.01 


1909.61 


275-54 


114-09 


No  other  measures  of  the  small  star.  The  proper  motion  of 
38  Ceti  is  given : 

Auwers        0*239    in  336^8 

Paris  0.204    in  352-° 

Porter          0.227    in  340.7 

Boss  0.221    in  353.4 

One  of  Swift's  nebulae  (Dreyer  442)  is  in  the  field  sp.    It 
is  too  faint  and  diffused  for  very  accurate  bisection : 

A  and  neb. 

1909.570  226?8  219*0 

.627  227.3  216.6 


No  other  measures.    There  is  a  faint  star  near  B.  The  proper 
motion  of  the  large  star  is  given  from  the  catalogue  places: 
Auwers  0:295    in     ioi?o 

Newcomb  0.309    in      96.8 

Groombridge       0.310    in      98.9 
Boss  0.324    in      98.2 


Lalande  2682     (8. 2... 9.1) 
R.  A.  i"  22™  30'       Decl. +  21°  6' 

A  and  B 
1907-731  77°io  86736 


1909.60 


227.0 


217.8 


0»ford  (2  26°)  3131     (9.3  m) 
R.  A.  I'll"1 12?63       Decl. +  25°  55' 1 1*0 

This  is  the  9.2  m  star,  DM  (25°)  206.     The  place  given 
above,  for  1900,  is  from  an  Oxford  astrographic  plate  taken 
1907.84.    The  proper  motion  is  deduced : 
0:274    in    77?5 

There  is  no  near  small  star  for  micrometer  comparison.    The 
nearest  A.  G.  star  is  7.7  m,  some  distance  following. 

A  and  DM  (25°)  211 

1910.5          AR.  A.+  87T7          ADecI.+  i6"6 
1900.  88.1  195 


P 

A.G.— Oxf. 


750 
772 

77.05 

76.62 

86.45 
86.33 

1907. 

75 

76.92 

86.38 

B  and 

C  (=Ho9) 

1007. 

731 
750 
772 

94?5 
94-1 
92.6 

3*04 
2.98 

3-02 

1907. 

75 

93-7 

3.01 

A  and  D  (10.3) 

1907. 

788 
791 
845 

184^40 

184.75 
184.58 

82:15 
81.94 
82.16 

1907. 

81 

184.58 

82.08 

For  A  and  B  we 

have: 

1893.05 
I907.75 

79°95 
76.92 

94*27 
86.38 

2n 

311 

These  give 

for  the  corrected  proper  motion  of  A 
0:627    in     iog?7 

Eng 


Burnham:   Measures  of  Proper  Motion  Stars 


This  motion  in  the  star  catalogues  appears  to  be  too  small : 
Stumpe          o"48p    in     iio?7 
Paris  0.519    in     110.4 

Porter  0.473    in     111.7 

That  B  has  no  motion  seems  to  be  certain  from  the  several 
measures  of  BC  during  the  past  25  years.  In  further  verifica- 
tion of  this,  I  have  measured  a  third  small  star  D. 


Lalande  2701      (8. 5... 9.0) 
R.  A.  i*  22™  59"        Decl.  +  30°  23' 

1907.750  348?i8  i84"35 

.788  348.15  184.35 

.810  348.36  184.23 

These  stars  are  DM  (30°)  233  and  232,  and  the  magnitudes 
8.1  and  9.3. 


DM  (59°)  274     (9.0.  ..8.5) 

R.  A.  i"  25™  32'        Decl.  +  60°  o' 

A  and  B 


1909.315 
.570 

•  573 

i8??i3 
187.00 
186.58 

6o'.'oo 

59-74 
59-68 

1909.55 

186.90 

59.8i 

A  and  C  (8.2) 

1909-515 

I25?35 

144^40 

•  570 

125-35 

I44.5I 

-573 

125.32 

144-73 

1909.59 

125.34 

144-55 

1892.12 

1907.78 


349.30 

348.23 


184.31 


Eng 
P 


These  positions  give  for  the  proper  motion  of  A : 
Measures        0*220    in    95?3 
Paris  0.248    in    90.0 

Porter  0.220    in    96.0 

A  similar  pair,  15"  p  and  6'  s,  was  at  first  measured  for  the 
other : 

DM  (30°)  230  and  229  (8.7. .  .9.2) 

1907.772            250?78  90:' 1 7 

.788            250.50  89.91 

.791  250.75 89.96 

1907.78  250.68  90.01 

No  other  measures.    The  DM  places  give  a  larger  distance. 


H  Pisciam     (4.5...II.O) 

R.A.  i"23m54"       Decl. +  5°  31' 

1907.769  301 ?63  182? 17 


The  primary  is  reddish.  B  and  C  are  respectively  DM  (59°) 
273  and  276.  In  A.  G.  Hels.  the  D;M  numbers  274  and  273  seem 
to  be  transposed.  With  this  correction  we  have  the  following 
for  comparison : 

A  and  B 


1876.8 
1878.83 

i8s°5 
186.52 

6o"o 
60.28           2n 

A.  G.  Hels. 
Bl 

A  and  C 

1876.8 
1878.83 

I25?6 
125-52 

I43"4 
144.11            2n 

A.  G.  Hels. 
Bl 

These  are  among  the  principal  stars  of  the  cluster  h  126 
(M  103). 

v  50  AnJromedae     (4. 3.  ..12. 7) 
R.  A.  i"  29™  45'        Decl. +  40°  48' 


.772 
.788 


301.63  182.66 

301.53  182.57 

Rejecting  the  single  measure  by  O2,  marked  uncertain,  we 
have: 

1883.81  302?6s  176^72  in  H2 

1907.77  301.60  182.47  3n  P 

Giving  for  the  proper  motion  of  the  principal  star: 

0^279  in    92?3 
The  meridian  values  are : 

Auwers  0*266    in  g6?7 

Newcomb  0.298    in  95.2 

Porter  0.277    in  97-7 

Boss  0.293    in  98.6 

B  has  a  small  n.o  m  companion  not  previously  measured. 

B  and  C  (10. ..11) 

1907.769  307°77  27^24 

.772  307.20  27.30 

.788  306.85  27.50 


IQ07.77 


307.27 


27-35 


1909.493 

•  512 

•  SIS 


128^50 
128.30 
128.50 


114:21 
113.68 
114.11 


1009.51 


128.43 


114.00 


No  other  measures  of  this.    The  proper  motion  of  the  bright 
star  is  given : 

Auwers         0*419    in    2o6?8 
Porter  0.409    in    206.3 

Boss  0.419    in    205.3 


DM  (49°)  445     (7. 8... 11.3) 
R.  A.  i"  36m  17*        Decl.  +  49°  59' 


1909.570 

•573 
.589 


40"32 
40.19 
40.10 


107.43 
107.37 

107.24 


1909.58 


40.20 


107-35 


The  larger  star  is  reddish.    The  other  measures  are  uncertain 
in  distance ;  probably  unchanged. 

1879.15  4O?27  106*37  in  Bl 

.64  40.13  104.78  in  Bl 

.64  40.00  106.01  in  Bl 


Burnham:   Measures  of  Proper  Motion  Stars 


i  Ceti    (3.5.  ..13. 6) 
R.A.  i-aS-jo'       Decl.— i6°34' 


1911-813 
.870 
.942 


243.27 
243.87 
243-00 


no"93 
110.69 
110.63 


1911.87  243.38  110.75 

No  other  measures.    The  principal  star  has  a  large  proper 
motion: 

Auwers  1*950    in    296?! 

Nevvcomb  1.926    in    296.4 

Boss  1.920    in    296.5 

The  small  star  will  be  within  range  of  the  micrometer  for 
comparison  for  a  long  time. 


LaUnde  3153 

R.  A.  i"  36™  24' 


I9II-7SS 
•  775 
.813 


202?03 
292.6o 
292.63 


(7. 2.. .11.8) 
Dccl.  — 18°  29' 

85*46 
85.69 
85.02 


1911.78  292.41  85.39 

No  other  measures.    The  proper  motion  of  A  is  given : 
Porter  0*541    in    oo?0 

Piazzi  I.  159     (6.O..  .9.5) 
R.  A.I' 39"  5'       Decl.  +  63°  16' 

1907.731  I37°75  93*47 

•750  137-50  93-32 

•772  137-28  93-64 

The  small  star  is  1  >M  (63°)  241.    The  measures  are : 
1892.21  I35?i3  102*70  2n  Eng 

1907.75  137.51  93.48  3n  P 

The  correction  to  the  proper  motion  is  small : 
Measures      0*649    in    H2?5 
Greenwich    0.626    in    111.3 
Porter  0.636    in     113.0 

Boss  0.634    in    in. 8 

53C«ri     (4. 7.. .6.1) 
R.  A.i' 43"  41*       Decl.  — n"  17' 

1908.652  249°93  i83"54 

.689  250.18  183.98 

.692  250.15  184.09 

It  is  evident  from  the  following  positions  that  these  stars 
are  relatively  fixed,  and  that  they  have  a  common  proper 
motion : 

1888.02  250^03  183:88  an  Eng 

1894.88  250.20  183.88  2n  Eng 

1908.68  250.09  183.87  3n  P 

There  is  no  third  star  near  enough  to  connect  with  either  for 
an  independent  determination  of  the  movement  of  the  large 
stars.  The  proper  motion  of  53  Ceti  is  given : 

Auwers        0*212    in    2.»6?4 

Porter          0.183    in    244.1 

Boss  0.177    in    243.5 


ti     (3-5...IO.O) 
R.  A.  i'  45"'  32"        Decl.  — 10°  55' 


1907.636 
.638 
.673 


41-15 
40.90 
41.08 


187':  17 
186.88 
186.89 


The  small  star  is  SD  (11°)  360.    The  only  measures  are: 
1879.88  40^70  185%;  211  p3 

1907.65  41.04  186.98  3n  p 

The  proper  motion  is  so  small  that  a  longer  interval  is  re- 
quired to  give  a  reliable  value.    From  the  measures  we  have: 
0*062    in    26o?2 

This  is  a  larger  and  reversed  motion  in  R.  A.  From  meridian 
observations : 

Auwers    (Fund.)  0*028    in     I7i!o 

Auwers  <A.  N.  3508)     0.029    in     149.5 
Newcomb  0.040    in     132.8 

Boss  0.049    i"     131-0 

The  companion  should  be  measured  again  some  years  hence. 
Unfortunately  there  is  no  other  star  near  enough  to  be  con- 
nected with  either  with  the  micrometer. 


aTriangali     (3.6.  ..12.9) 
R.  A.  i"  46ra  15'       Decl.  +  29°  o' 


A  and  B 

1909.512 

308^80 

84*96 

.570 

308.75 

84.94 

.589 

308.85 

85.11 

1909.56 

308.80 

85.00 

A 

and  C  (12.2) 

1909.589 

l82?28 

222*69 

•  592 

182.37 

221.98 

1909-59 

182.32 

222.33 

As  the  early  measures  are  on  one  night  for  AB,  and  single 
distances  on  two  nights  of  the  other,  further  observations 
should  be  made  hereafter. 

AB          1879.59         304?i  80*62          in          P' 

AC          1879.67          182.2          228.30         3n          P' 

From  these  positions  we  have  for  the  proper  motion  of  a. 
Trianguli: 

Measures      0*226    in     i82?3 
Auwers         0.226    in     180.3 


Newcomb 
Boss 


0.232    in    175.1 
0.233    in     175.8 


Lalande  3621      (7.0.  . 

-9-5) 

R.  A.  i"  52™  5 

Decl.  +  32°  38' 

1907.845 
7.964 

8.102 

I38°50 
138.77 
138.85 

131*18 
131-14 

For  comparison  we  have  : 

1893.12            139*15 
1907.97            138.71 

136*59 
131-17 

211 

3n 

Eng 


Burnham:   Measures  of  Proper  Motion  Stars 


The  corrected  proper  motion  is  less : 
o".372    in    149°  5 

It  is  given  from  meridian  positions : 

Stumpe         o'.'439    in  isi!6 

Porter  0.428    in  153.2 

Paris  0.454    in  146.6 

It  is  extremely  improbable  that  the  small  star  has  any  sensible 
motion.  To  make  this  certain  hereafter,  I  have  measured  a 
third  12.2  m  star: 

A  and  a 

1907.964      30^65      86";o 
8.102      30.90      86.60 


1908.03 


30.77 


86.65 


DM  (54°)  444     (7-9- • -9-3) 
R.  A.  i"  55m  7"        Decl.  +  54°  39' 

1909.573        I76?62       22i:i2 

.592     176.68     221.15 
.647     176.10     220.77 

1909.60  1/6.47  221.01 

This  has  been  measured  as  follows : 

1879.40  I76?96  22o"i7  2n 


Bl 


The  principal  star  is  reddish.  The  other  is  DM  (54°)  445. 
The  apparent  change  is  probably  not  real,  since  the  separating 
distance  is  too  large  for  the  most  accurate  measures. 


Lalande  3962 

R.  A.  2"  3m  25'        Decl.  +  29°  15' 
A  and  B  (8. 5. ..11.7) 

1907.791  I7o?20  103:89 

.807  169.58  103.58 

.865  169.90  103.69 

1907.82  169.89  103.72 

A  and  C  (11.2) 

1907.788  2?io  158:12 

.791 
.865 


6  Persei     (5.5.. .10. o) 
R.  A.  2*  5™  38'        Decl.  +  50°  30' 

1907-731              7o?43  131" 18 

•750              70.50  131.05 

.772              70.38  131-19 
We  have  the  following  measures  of  the  small  star: 

1853-71             7S°82            146:58  3n            O2 

1873.14             74.10            140.40  in            O2 

1881.14             73.18           139.56  in           O2 

1907.75             70.44           131.14  3n           fj 
Therefore  the  proper  motion  of  the  large  star  is : 

o"373    i»     "4?o 
From  meridian  observations : 

Auwers         0.374    in  H7?5 

Greenwich    0.357    in  115.4 

Newcomb     0.388    in  115.4 

'Boss              0.386    in  115.8 

DM  (67°)  191     (7. 8.. .9.3) 
R.  A.  2"  sm  54'       Decl.  +  67°  7' 

1907-731  I04?40  42:38 

.750  104.13  42.48 

•772  104.25  42.55 

The  small  star  is  DM  (66°)  193.  The  proper  motion  is  de- 
duced from  the  following  positions : 

1875.6  io8?8o  62:40  A.  G.  Chris. 

1892.21  106.62  52.03  211  Eng 

1907.75  104.26  42.47  311  (5 

These  give  for  the  motion  of  A : 

0:626    in     ii8°3 
From  meridian  positions : 

Porter  0:567    in     I22?s 

A.  G.  Chris.        0.560    in     124.1 

DM  (44°)  456     (8. 6...  10.6) 
R.  A.  2*  10™  32'       Decl.  +  44°  39' 


1.97 

2. 2O 


158.22 
158.82 


1907.791 
.865 


1908.81  2.09  158.39 

A  and  D  (10.4) 
239?93  2I3:'69    Single  dist. 


240.20  213.18 


1907.83  240.06  213-43 

There  are  no  other  measures  of  these  stars.    The  observation 
in  Engelhardt  ascribed  to  the  Lalande  star  is  given  : 

1893.99  327°43  80:09  3n  7.0.  ..9.9 

I  could  not  identify  this  with  any  star  in  the  vicinity. 

The  proper  motion  of  L  3962  is  given  : 

Stumpe         0:361     in     123?$ 
Paris  0.366     in     122.2 

Porter  0.356    in     128.7 


1908.862 


35°38 
35-03 
35-13 


98:80 
98.68 
98.72 


1908.87  35.18  98.73 

Sometimes  catalogued  as  a  red  star,  but  not  red  now.    Ap- 
parently unchanged. 

1879-15  34°90  99''oo  in  Bl 

1879.64  34-50  98.16  in  Bl 

1894.92  35.20  98.86  Donner 

The  last  position  is  photographic. 

DM  (49°)  628     (7. 2...  10.7) 
R.  A.  2hiim  19"        Decl. +  49°  35' 

1908.845  354?07  136:83 

.862  353.85  136.86 

•882  353.75  137.25 


1908.86 


353.89 


136.98 


Burnham:   Measures  of  Proper  Motion  Stars 


Apparently  unchanged.    The  proper  motion,  if  any,  is  very 
small. 

1879.40  3S3°8s  136*35  an  Bl 


S  Pertei     (9.2.  ..II. o) 
R.  A.  2»  I4m  15'       Decl.  +  58°  2' 


1908.862 


I9?88 

19-75 
19.67 


68*87 
69.14 
69.11 


1908.87  I9-77  69.04 

The  principal  star  is  variable  and  reddish.  The  other  meas- 
ures do  not  agree  in  distance,  and  the  apparent  change  must 
be  verified. 

1880.21  ig?75  68*55  ™  Bl 

1880.59  19.38  67.88  in  Bl 

Piazzi  II.  61      (6. 3...  1 1. 8) 
R.A.2bi5m23'        Decl. +40°  51' 


1909.573 

.589 

.592 

0-95 
I.I] 

55*95 
56.01 
56.19 

1909.58 

1.07 

56.05 

77  Ceti    (6. i...  12. 8) 
R.  A.  2"  28™  47'        Decl.  —  8°  23' 


1911.663 
.720 
-736 


47-05 
47-35 

47-25 


95  ,;5 
95.18 
94.64 


47.22 


95.06 


The  earlier  measures  give: 

1880.41  358?5  53"3i  2n  f}1 

The  proper  motion  of  the  principal  star  therefore  is : 

0*126    in    228?4 
This  movement  has  been  given : 

Groombridge  0*120  in  228^9 
Gr.  lo-year  0.143  in  212.7 
Boss  0.127  in  222.5 

There  is  a  7.6  m  star  in  a  low-power  field : 
1874.  6?4  291*5  A.  G.  Bonn 

1909.59  6.95  295.46  in  P 


65  Andromeda*     (4.8.  ..12.8) 
R.  A.  2"  16"  37*       Decl.  +  49°  44' 

A  and  B 

igo8.84S      303?IO       47T67 
.S62      303.40       47-97 

.882      303.00 47-99 

1906.86  303.17  47-88 

A  and  C  (10.5) 

1908.845  3<>7°37  192*14 

.862  306.88  191.92 

.882  306.88  191.82 


1911.71 
No  other  measures. 

The  proper  motion  of  77  Ceti  from  meridian  observations  is 
given: 

Auvvers         0*091     in     140^9 
Boss  0.090    in     136.2 

80  Ceti     (5.9..  .13.5) 
R.  A.  2"  30™  6'        Decl.— 8° 21' 

A  and  B 

1911.663             I23?i8  117*06 

.720            123.48  117.52 

1911.69              123.33  117.29 

A  and  C  (9.6) 

1911.644            189^26  146*07 

.663            189.23  146.40 

.720            188.08  146.32 

1911.67  189.16  146.26 

C  is  SD  (8°)  488.    From  meridian  positions  we  have  for  AC : 
1900  i8g?2  147:2  A.  G.  Wein-Ott. 

The  proper  motion  of  80  Ceti  is  given : 

Auwers         0*087    in    222^8 
Boss  0.076    in    209.3 


DM  (57°)  651     (6. 2.. .9.0) 
R.  A.  2"  42m  46"       Decl.  +  57°  49' 


1910.644 
.666 
.678 


147-07 
147.10 


193.19 
193-22 

193.44 


1910.66  147.07  193.28 

I  do  not  find  any  proper  motion  from  meridian  positions  for 
the  large  star.    For  comparison  we  have : 

1875.  I47°8  191*4  A.  G.  Hels. 

1879.38  147.3  192.19         2n  Bl 


1908.86  307.04  191.96 

The  proper  motion  of  the  large  star  is  small : 
Auwers  0*024  in  153?! 
Boss  0.031  in  121.5 

No  other  measures  of  B.    There  appears  to  be  a  large  error 
in  one  of  the  former  distances  of  C : 

1879.16  3o6°73  192*14  in  Bl 

1879.64  306.57  190.75  in  Bl 


16  Pertei      (4.5.  . 

-9.2) 

R.A.2»43' 

"  o'       Decl. 

+  37°  49' 

1008.573 
•  597 
.613 

I45°53 
145-88 
i45-6o 

252.13 

252-32 

1908.59  145.67  252.24 

The  other  measures  are  tlic  following: 

1857.41  I44?20  262*96  in 

i88f.i6  144.63  257.61  in 

These  positions  compared  with  the  recent  measures  give  for 
the  corrected  proper  motion  of  the  principal  star : 
0*251    in     io8?8 


02 
O2 


10 


Burnham:   Measures  of  Proper  Motion  Stars 


This  has  been  given  from  transit  observations : 
Stumpe          0*205    in     107^6 
Porter  0.200     in     116.7 

Auwers         0.204    in     108.2 
Boss  0.213    in     119.5 

As  a  further  check  on  the  corrected  value,  a  nearer  star  13  m 
is  connected : 

1911.625  I2i?io  97"24 

.644  121. 16  97.04 

.663  121.46  97.13 


1911.64 


121.24 


97.H 


Anonymous 

R.  A.  2"  45m  54'        Decl.  +  22°  37'  8" 

M.  Puiseux,  of  the  Paris  Observatory,  has  called  attention  to 
a  10.4  m  star  apparently  having  a  large  proper  motion  {Bull. 
Ast.,  xxvi,  416).  This  was  noted  on  a  photographic  plate  made 
November  25,  1908.  Comparing  this  with  a  previous  plate,  he 
found  for  the  proper  motion  of  the  small  star : 
o"7o8  in  241 ?7 

He  gives  the  place  (1900)  as  above. 

The  photographic  print  shows  three  stars,  the  nearest  two 
exceedingly  faint,  and  very  much  fainter  than  the  smallest  stars 
usually  visible  on  the  astrographic  plates.  My  measures  of 
these  stars  are: 

A  and  B  (n.i..  .13.2) 

1910.589     I75?68      g6".73 

.605     176.26      96.93 

.666     176.23      95.84 

.678     176.37      97.38 

A  and  C  (13.3) 

1910.589     ii3?82  ioi"o7 

.605     113.41  101.78 

.666     113.03  101.78 

.678     II3-73  101.12 

A  and  D  (12.1) 

1910.091  301 °oo  i62?o9 

•570  301.03  162.09 

.586  301.05  161.85 

•589  301.00  161.85 

M.  Puiseux  gives  the  photographic  relative  positions  of  these 
stars : 
AB 


AC 


AD 


From  these  positions  we  have  for  the  apparent  motion  of  A : 
AB        R.  A.  —  0^468        Decl.  +  0^185 
AC  —0.873  —0.393 

AD  +0.218  +0.013 

When  the  errors  probable  in  the  photographic  and  the  micro- 
metrical  results  are  considered,  it  is  obvious  that  no  high  degree 
of  accuracy  for  the  proper  motion,  if  any  exists,  could  be  ex- 
pected from  positions  having  a  time  interval  of  only  a  little 
more  than  one  and  a  half  years.  The  most  distant  star  is  dis- 


cordant when  compared  with  the  other  two,  and  must  there- 
fore be  rejected  if  use  is  made  of  the  others.    From  the  mean 
of  AB  and  AC  we  have  for  the  proper  motion  of  A : 
o"678    in    261 ?2 

The  smaller  apparent  change  in  AD  may  be  due  to  errors  of 
observation  in  all  the  measures,  or  to  a  possible  proper  motion 
in  that  star,  although  this  is  to  the  last  degree  improbable.  To 
settle  this  question  hereafter,  I  have  connected  this  star  with 
others  shown  on  the  print : 

D  and  E  (10.0) 


1910.701 
•703 
•  739 
•742 

1910.760 
.78o 
.8i8 


289.78 
289.97 
290.01 

E  and  F  (12.5) 
2ig?6o 
219.51 
219-30 


E  and  G  (12.5) 
1910.818  250^58 

.838  250.48 


101:10 
101.25 
100.58 
100.51 


157-93 
158.21 
158.09 


215-65 


1908.90 
1910.72 

200?73 
289.88 

101^29 
100.86 

4" 

Photo. 
0 

1908.90 
1910.78 

219.71 
219.47 

158.27 
158.08 

3" 

Photo. 
P 

1908.90 
1910.83 

250.55 
250.53 

215-52 
215.70 

211 

Photo. 
P 

1908.90 

176^60 

9Ka 

Photo. 

1910.63 

176.13 

96.72        4n 

P 

1908.90 

114.20 

100.34 

Photo. 

1910.63 

113.50 

101.44        41 

P 

1908.90 

301  .  10 

161.69 

Photo. 

1910.46 

301.03 

161.97        4" 

P 

Professor  Frederick  Slocum  has  kindly  measured  the  print 
referred  to,  with  all  possible  accuracy,  for  the  positions  of  these 
stars.    The  comparisons  are  as  follows: 
DE 


EF 


EG 


From  these  measures  it  would  seem  probable  that  D  has  some 
proper  motion,  since  there  is  no  evidence  of  change  in  EF  or 
EG.  The  two  positions  of  DE  imply  a  movement  of  D  of  o"87 
in  355?6. 

It  would  appear  that,  for  all  practical  purposes,  measures 
from  a  print  can  be  safely  used  in  lieu  of  those  from  the  original 
plate.    The  print-measures  of  the  other  two  stars  are : 
AB  1908.90  I76?2  96^63 

AC  1908.90  114.0  100.27 

A  careful  re-measurement  of  these  stars  with  the  micrometer 
a  few  years  hence  will  give  a  substantially  correct  value  of  the 
movement  of  both  stars,  if  the  apparent  change  is  real. 


Lalande  5273     (5. 8... 13. 3) 
R.  A.  2"  46™  27'       Decl. +6i°2' 

A  and  B 
1911.625  255?27  50^75 


.644 

•755 

256.10 
256.17 

50.63 
50-95 

1911.67 

255.85 

50.78 

AandC  (11.3) 

1911.625 

43°27 

9^37 

.644 

43.23 

91-51 

•755 

43.40 

91.60 

1911.67 

43-30 

91.49 

II 


Burnhain:   Measures  of  Proper  Motion  Stars 


No  other  measures.    The  proper  motion  of  the  principal  star 
is  given: 

Argelander     0^172    in    87?o 
Boss  0.175    >n    81.1 

Porter  0.160    in    90.0 


DM  (63°)  369     (6. 5... 9. 9) 
R.  A.  2"  46™  31 '        Decl.  +  63°  50' 


1910.644 
.666 
.678 


129.33 
129.40 
129.07 


115760 
115.89 
116.50 


I9IO.66        129.27  Iio.oo 

No   proper  motion   given  the  large  star.     It  is  decidedly 
reddish.    The  only  other  measure  is : 

1879.40           I29?7            115*20  2n           Bl 


Lalande  5586     (7. 1.  ..9. 2) 
R.  A.  2"  56™  2'       Decl.  +  35°  58' 


1907.788 

.807 
.848 

26s?03 
265.10 
265.30 

84728 
84.07 
84.45 

1907.81 

265.14 

84.27 

These  stars  arc  DM  (35°)  616  and  615.  In  the  first  instance 
this  was  measured  by  mistake  for  Lalande  5712  which  is  about 
4m  /.  There  are  no  other  direct  measures,  but  from  the 
meridian  positions  there  would  seem  to  be  considerable  proper 
motion  in  R.  A.  in  one  of  the  stars. 

1889.2  265?!  8172  A.  G.  Lund 

This  is  confirmed  by  the  DM  places  which  give  77*7  for  A  RA. 
On  one  occasion  the  principal  star  was  thought  to  have  a  very 
faint  companion  6"  or  8"  distant  on  the  f  side,  but  the  con- 
ditions were  not  suitable  to  verify  it  later. 


Lalande  5712     (7.0.  ..8.4) 
R.  A.  3'  o"  3'        Decl.  +  36°  10' 

1007.750  245?io 

.807  244.83 

.810  245.26 

The  mean  results  are: 

1893.12  243^15  n6722 

'907.79  245.06  117.88 


117-90 
117.92 


2n 
311 


Eng 


It  would  be  unsafe  to  assume  that  a  comparison  star  of  this 
brightness  had  no  motion  of  its  own.  In  this  instance  it  is 
probably  fixed.  The  several  values  of  the  motion  of  A  are  : 

Measures      07290    in    131!! 

Paris  0.373    in     124.5 

Porter  0.338    in     131.9 

Both  stars  are  in  A.  G.  Lund.  The  smaller  is  D  M  (36°)  631. 


t PtTMei      (4. 2... 12. 4) 

R.  A.  3"  i™  5'        Decl.  +  49°  9' 
1911.644  i3i°73  146^24 


.663 
.720 


132.42 
131-83 


146.09 
146.12 


1911.67  I3L99  146.15 

No  other  measures.    The  principal  star  has  a  large  proper 


motion : 


Auwers 

Boss 

Newcomb 


1 7253  in  93  ?8 
1.268  in  93.6 
1.308  in  94.3 


co  Pertei     (4.7...II.O) 

R.A.  3h3m33'        Decl. +  39°  9' 
1908.845  m?63  177722 


.862 
.882 


111.05 
111.13 


177.55 
177-62 


177.46 


2n 
2n 


Bl 
Donner 


1908.86  111.27 

The  only  other  positions  are: 

1879.40  no?8o  176750 

1896.99  112.05  178.13 

The  last  position  is  photographic. 

The  proper  motion  of  m  Persei  is  small : 

Auwers         07039    in    300^7 
Boss  0.022    in    277.7 


DM  (47°)  779     (6.9.  ..10.8) 
R.  A.3*4m8'        Decl.  +  47°  17' 

A  and  D 

1908.884  294^68  2027o8 

.898  295.02  202.17 

.920  294.99  201.95 

For  comparison  we  have  the  following: 

1880.41     294? 14     198764     2n 
1908.90     294.90     202.07     3" 

If  the  early  position  is  correct,  one  of  these  stars  has  a  proper 
motion  of  about  o7i2,  but  this  must  be  verified  by  later  measures. 
I  have  been  unable  to  find  any  other  positions  of  the  small  star 
photographic  or  otherwise.  The  star  catalogues  give  no  proper 
motion  to  the  large  star.  This  is  sometimes  listed  as  a  red  star. 

I  have  added  two  new  and  near  companions  to  the  principal 
star,  the  first  of  which  is  very  faint  and  difficult. 

A  and  B  (14.8) 

1908.884                3°4  7"47 

.920                7-3  7-45 

•974 9-8 7-^5 

1908.93                 6.8  7.36 

A  and  C  (13.2) 

1908.884            176^6  287o6 

•920            175-5  28.15 

.939            176.2  27.78 


Bl 

0 


1908.93  176.1  28.00 

There  is  a  faint  star  near  D,  a  re-measurement  of  which  will 
show  whether  there  is  any  movement  in  D. 


12 


Burnham:   Measures  of  Proper  Motion  Stars 


D  and  d  (13.5) 
1908.920      o6?o 
•939      91-7 


ip'74 
19.98 


1908.93 


93-8 


19.86 


Lalande  5922      (7 . 3 ... 7 .8) 

R.  A.  3"  5"' 6'        Decl.  — 11°  35' 


1907.788 
.791 
•  845 


56.03 
56.27 


143-64 
143.88 
I43-52 


Eng 


The  only  direct  measures  are: 

1894.03  56?8o  144" i 7  2n 

1907.81  56.17  143-68  3n  p 

The  comparison  star  might  well  have  some  proper  motion  so 
far  as  magnitude  is  concerned'.  In  this  instance  the  motion,  if 
any,  is  small.  For  the  proper  motion  of  A  : 

Measures      o''i2i     in     I29?5 

Stumpe         0.180    in     129.2 

Paris  0.203     in     130.1 

Porter  0.165     in     125.9 

The  relation  of  these  stars  in  some  of  the  catalogues  is  not 
consistent  with  the  micrometer  positions,  nor  with  the  recog- 
nised proper  motion. 


1825. 
1890.0 
1894.0 
1907.8 


ARA 
I3o"o 
118.9 
120.64 
"9-35 


ADecl. 

7o?5 
77.1 
78.94 
80.00 


Weisse 
Cin.  13 
Eng 


To  show  hereafter  whether  or  not  B  has  any  proper  motion, 
I  have  connected  it  with  a  11.5  m  star. 


1007.865 
-974 


B  and  C 

I55°oo 
154-50 


86"i4 
86.55 


1907.92 


155-20 


Lalande  5993      (8.5... 
R.  A.  3"  8m  24'        Decl.  + 

A  and  B 
1907.848  i8i?03 


.865 
•974 


180.83 
180.65 


86.34 

8.5) 
15°  Si' 


I75"97 
175-66 

175-25 


1007.89  180.84 

A  and  C  (11. 8) 


1907.848 
.865 
•974 


235.87 
235.60 


175-63 


181:58 
180.93 
180.28 


1907.89 

1907.848 
.865 
•  974 

1907.89 


235-74 
B  and  C 

296?45 
296.80 
296.40 

296.55 


180.93 


164.76 
164.87 
164.94 


B  is  Lalande  5994,  and  from  meridian  observations,  has  no 
proper  motion.  The  only  measures  are  : 

1894.03  i8o?oi  I75?92  2n  Eng 

1907.89  180.84  I75-63  3"  P 

These  positions  give  for  the  proper  motion  of  A  : 
oTi64    in    97?9 

If  these  measures  are  combined  with  the  meridian  positions 
in  A.  G.  Berlin  and  Cin.  13,  the  proper  motion  is  : 
0^184    in     in?6 

Some  of  the  values  from  catalogue  places  are: 
Stumpe  0^294    in     I47?o 

Paris  0.195    >n      9°-O 

A.  G.  Berlin        0.139    'n     126.8 

As  a  further  contribution  to  this  matter  in  the  future,  I  have 
connected  each  with  a  faint  star  which  it  is  practically  certain 
has  no  sensible  proper  motion. 

Bradley  448     (4.8.  ..12.5) 
R.  A.  3"  9m  27'       Decl.  +  65°  13' 

1911.931  97?6o  122*08 

•942  57-53  121-50 

•  950  _  57.63  120.97 

1911.94  57.59  121.52 

If  the  large  star  has  any  proper  motion,  it  is  very  small  and 
very  uncertain. 

Auwers  o"o28  in  244?9 
Gr.  (1900)  0.006  in  348.2 
Boss  0.012  in  293.9 


v.  Ceti     (5.  2...  9.  2) 

R.  A.  3"  I3m  4'        Decl.  +  2°  56' 

1909.071  156^90  269^07 


.627 
.630 
.649 


157-25 
157-10 
156.95 


269.18 
267.83 
268.62 


O2 

H2 


1909.49  157-05  268.68 

For  comparison  we  have  the  following  measures: 
1853.26  I53°22  271^57  311 

1884.10  155-37  270.13  2n 

From  these  positions  the  apparent  proper  motion  of  x  Ceti  is  : 
0^323    in    74?4 

The  motion  from  meridian  observations  seems  to  be  too  small. 
It  is  not  probable  that  the  small  star,  DM  (2°)  521,  has  any 
sensible  movement.  It  is  given  in  A.  G.  Albany,  Schjellerup 
and  other  star  catalogues. 

0^269    in    6s?9 

0.288    in    70.3 

0.277    in    69.3 

0.281     in    70.5 

For  future  use  in  this  connection,  I  have  connected  a  third 
small  star  : 

B  and  C  (11.5) 

1909.706       272?25       2I5?I4 

.725  272.53  215.09 


Auwers 
Newcomb 
Porter 
'Boss 


1909.71 


272.39 


215.11 


Burnhain:   Measures  of  Proper  Motion  Stars 


uPertei     (2.2. .  .12.2) 
R.  A.  3"  15™  45"        Dccl.  +  49°  26' 


I909-573 
.589 
.627 


195.90 
195.98 
196.02 


167*01 
166.99 
166.88 


I909-59 


195-97 


166.96 


The  only  other  measures  are : 

1879.54  I95?5  166*05  2n  P3 

From  these  positions  we  have  for  the  proper  motion  of  o 
Persei: 

0*055    in    71?! 

The  meridian  observations  leave  the  amount  and  direction  of 
this  motion  very  uncertain. 

Auwers   (F.  C.)        0*064  in     i66?7 

Auwers  (Cor'd)        o.oii  in     105.1 

Newcomh  (Stand.)    0.045  m     138.0 

Newcomb  (Fund.)     0.040  in     133.9 

Groombridge  0.029  in     146.8 

Boss  0.039  in     135.7 


DM  (42°)  787     (7. 5... 12. 8) 

R.  A.  3"  27m  27'        Decl.  +  42°  29' 

A  and  B 

1909.802  lpl?oo  54"io 

.818  191.40  53.89 

.838  191.70  53-84 


1909.82 


191.37 


53-94 


No  other  measures  of  the  small  star.    The  proper  motion  of 
the  principal  star,  Groombridge  706,  is  given : 

A.   G.   Bonn        0*179    »'     '37°6 
Porter  0.174    in     137.5 

Groombridge       0.213    in     135-6 

For  further  comparison  I  have  connected  a  star  8.3m  closely 
following : 

A  and  Lalande  6548 

1909.802  93-67  I93"75 

-818  93-93  193.42 

•838  93-70  193.66 


1909.82 


93-77 


I93-6I 


From  meridian  observations  we  have: 

1878  94?8  199*0  A.  G.  Bonn 

These  positions  give  as  nearly  the  same  proper  motion  of  A  as 
could  be  expected  from  the  data : 

0*203    in     I28?o 


Recent  direct  measures  are : 
1007.26  93?75  i94" 


Hertzsprung 


DM   (62°)   596     (Var.  ..9.2) 
R.  A.  3"3im  30'        Decl. +  62°  15' 


1910.644 
.666 
.678 


348-90 

348- So 


208*09 
207.84 
207.83 


1910.66  348.83  207.92 

B  is  DM  (62°)  594.    The  principal  star  is  reddish.    Probably 
unchanged. 

1879.42  348^64  2o8"33  211  Bl 


b  Pertei     (3.3. ..10.6) 
R.  A.3h34m24'        Decl. +  47°  24' 


1907.578 
.581 
.657 


312.40 
312.62 


99'.'22 

09.08 
99-09 


1907.60  312.52  99-13 

The  only  other  measure  of  this  star  is : 

1879-32  3i2?6o  97^44  311  p3 

From  these  positions  we  have  for  the  proper  motion  of  8 
Persei: 

0*060    in     I27?9 

From  meridian  observations : 

Auwers         0*039  in  i6i?8 

Newcomb     0.051  in  135.3 

Boss  0.046  in  135.5 


Lalande  6772     (7.  5...  10.5) 

R.  A.  3"  35'"  35*        Decl.  +  42°  14' 

A  and  B 

1907.791  280!  57  47"56 

.807  281.25  47-13 

.810  281.16  46.97 

.845  281.50 


1907.845 
7.964 

8.ooo 


B  and  C  (12.5) 

i84?45 
184.62 
184-50 


47.24 


55"5i 
54.97 

55.69 


184.52 


55-39 


There  are  no  other  measures  of  the  third  star.  For  AB  we 
have  the  following: 

1893.21            277?57           41 '.'69           ,111  F.ng 

1907.81            281.12           47-22           411  P 

The  corrected  proper  motion  of  the  principal  star  is  therefore : 
0*427    in     I26?6 

Some  of  the  former  values  are : 

Stumpe          0*482  in  I22?9 

Paris  0.534  in  123.5 

Porter  0.406  in  124.9 


Burnham:   Measures  of  Proper  Motion  Stars 


Bradley  536      (7.0.  ..9.5) 
R.  A.  3"  46"' 3"        Decl.  — i°3i' 

1907.636  i54°io  95"S6 

-638  153.68  95.55 

•657  153-65  95 -60 

The  measures  are  obviously  inconsistent  and  nothing  can  be 
safely  inferred  as  to  the  real  relative  motion  if  any. 

1886.52  i53°57  95"i8  211  Eng 

1894-95  I54-08  95.02  311  Eng 

1907.64  153.81  95.57  311  p 

The  small  star  is  not  in  DM,  and  I  do  not  find  it  in  any  of  the 
catalogues  examined.  A  mean  of  the  first  two  measures  com- 
pared with  the  last  would  indicate  a  proper  motion  of  o7o2S  in 
332?!  for  the  large  star,  but  evidently  this  cannot  be  right,  since 
one  of  the  measures  must  have  a  considerable  error.  It  is 
probable  that  the  two  stars  have  the  same  motion.  Later 
measures  will  show. 

The  motion  of  A  from  meridian  positions  is  also  uncertain : 
Auwers         o7i82     in    262  "4 
Boss  0.026    in    240.0 

Lalande  7097      (7.0.  ..  10.2.  ..  10.3) 
R.  A.  3"  46m  16'        Decl.  +  59°  17' 

A  and  B 

1907.845  356? 17  I49"8s 
.848  356-23  149.82 
•867  356.10  150.27 

A  and  C 

1907.845              40? 10  187747 

.848              40.08  187.63 

40.12  187.69 


Piazzi  III.  215      (6. 2... 9. 5) 
R.  A.  3"  53m  54s        Decl.  +  17°  51' 


1909.666 
•  703 

.706 


277-30 
277.48 

277-33 


i6i7i7 
161.22 
161.48 


.867 

The  only  measures  are  : 

AB        1893.26        355°2i 

1907.85        356.17 

AC        1893.26          38.72 

1907.85          40.30 


149.98 
187.18 
187.60 


3" 
3" 
3" 


Eng 

P 

Eng 


1909.69  277.37  161.29 

The  small  star  is  DM  (17°)  664.    No  other  measures.    The 
proper  motion  of  the  principal  star  is  : 

A.  G.  Berlin        o7ii8    in     io8?8 
Boss  0.141     in     105.2 

Newcomb  0.143     in     104.9 


37  Tauri     (4.2.  ..9.4) 
R.  A.  3"  57'"  36S        Decl. +  21°  45' 


1907.581 
.638 
.657 


i89?45 
189.40 
189.25 


I37"52 
137-35 
137.47 


These  positions  give  the  proper  motion  of  the  principal  star: 
AB        R.  A.  —  o'.'i89        Decl.  +  07219 
AC  0.292  0.204 

0.240  0.211 

From  this  and  the  meridian  observations  we  have : 
Measures      07320    in    3n?3 
Stumpe          0.375     in     300.5 
Porter  0.365     in     298.3 

There  are  two  new  and  nearer  companions  to  the  large  star 
not  previously  seen.  It  will  be  of  interest  to  see  whether  either 
belongs  to  the  moving  star. 

A  and  a  (13.3) 

1907.845  2I4?7  6797 

•  899  217.1  6.78 


For  the  proper  motion  of  A  we  have  the  following  positions : 
1853.83  i86?9i  I38"69  in  O2 

1880.73  188.65  138.33  4ti  Doub. 

1887.08  188.25  137.41  211  Eng 

1907.62  189.37  137-45  3n  P 

From  these  measures  the  corrected  proper  motion  of  the 
principal  star  is : 

o7io6    in     in?7 

This  has  been  given  from  meridian  positions : 
Auwers         07094    in     128?! 
Newcomb      0.113     in     120.9 
Boss  0.113    in     124.4 


39  Tauri     (6.5.  ..8.2) 

R.  A.  3"  58™  14s        Decl. +21°  41' 

A  and  B 


1907.581 
.638 
.657 


2?6S 

2.62 
2.70 


169.30 
169.64 


1907.87  215.9 

A  and  b  (12.8) 
1907.845  67?o 

7.964  67.3 

8.102  67.9 


6.77 

33"30 
33-29 
33-49 


1907.97 


67.4 


Eng 


B  is  Piazzi  III.  237.  It  could  not  be  assumed,  without  satis- 
factory evidence,  that  a  star  of  this  magnitude  was  fixed.  The 
measures  of  BC,  however,  show  no  sensible  change,  and  there- 
fore it  is  practically  certain  that  B  has  no  proper  motion.  The 
measures  of  AB  are : 

1887.08  3?87  168751  311 

1907.62  2.66  169.46  311 

The  proper  motion  of  39  Tauri  is : 

Measures  o7i79  in  io8?4 

Auwers  0.205  in  124.1 

Hedrick  0.217  in  127.0 

Boss  0.222  in  128.4 


B  and  C  (10.8) 


1907.581 
.638 

1907.61 


127.65 

1-7-7'J 


6i7o4 
61.20 

61.12 


Burnham:   Measures  of  Proper  Motion  Stars 


One  of  the  prior  measures  must  be  rejected  for  obvious 
reasons.  The  other  positions  seem  to  show  no  change  in  twenty 
years.  Engelhardt  calls  C  12.2  m. 

1887.08            I28?42             63*05  in  Eng 

1887.08  128.20             61.62  in  Eng 

1887.09  128.15             61.61  in  Eng 
1895.06           129.58             61.07  m  Eng 


Lalande  7788  and  7791 
R.  A.  4"  4™  4"        Decl.  —  17°  48' 

A  and  B  (7.4. ..8.5) 

1908.044  I38?68  I25?i2 

.063  138.97  125.36 

.079  138.90  125.03 

Meridian  positions  of  both  stars  will  be  found  in  the  cata- 
logues of  Bonn,  Bruxelles,  Cincinnati  and  Washington.  They 
have  very  nearly  the  same  proper  motion.  The  direct  measures 
are: 

1894.02  I39?io  126^26  2n  Eng 

1908.06  138.85  125.17  3n  p 

From  these  measures  the  relative  motion  is : 
0^087    in    i6s°8 

The  proper  motion  of  L  7788  from  transits  is  given : 
Stumpe         oTi7i    in    i86?2 
Paris  0.178    in     180.0 

Porter          0.154    in    180.0 

I  have  measured  a  faint  star  for  the  verification  of  this  proper 
motion  hereafter. 

A  and  a  (13.0) 

1908.102  39?55  115:17 
9-071  39-53  116.15 
9.763  39-10  115-42 


1908.98 


39-39 


"5.58 


45  Tauri     (6.O.  ..lo.l) 
R.  A.  4*  4™  57'       Dccl. +  s°i3' 


1907 

.845 

42?I7 

125:37 

7 

.865 

42.35 

125-37 

7 

.879 

42.37 

125.76 

1 

.022 

42.60 

125.72 

For  comparison 

we  have  : 

1888 

.07 

43 

?32 

128:53 

2n 

Eng 

1895 

.09 

42 

•  95 

127. 

99 

2n 

Eng 

1007 

•90 

42 

•37 

125. 

55 

4" 

P 

48  Tauri     (6. 5...  12.0) 

R.  A.  4"  8m  58'       Decl. +  15°  6' 

A  and  B 


1909.725 

•  744 
.78o 

3i°57 
31-63 
31.30 

i38''95 
139-10 
138.64 

1909-74 

3I-50 

138.90 

A  and  C  (11.2) 

1909-763 
.78o 

3o8°95 
308.87 

U6.53 

1909.77 

308.91 

146.80 

No  other  measures  of  the  small  stars.    The  proper  motion 
of  48  Tauri  is  given  from  meridian  observations : 
Auwers         oTioS    in      95?3 
Boss  0.125    in     101.6 


51  Tauri     (5.9..  .9.5) 
R.  A.  4"  II1"  17'        Decl.  +  21°  17' 

1909.666  62?23  i66"so 

.703  62.55  166.51 

.706  62.00  166.79 


1009.69 


62.00 
62.26 


166.60 


The  small  star  is  DM  (21°)  619.  No  other  measures,  and  no 
accurate  meridian  place  of  B.  The  proper  motion  of  the 
principal  star  is: 

Auwers         o"o88    in     loo?3 

Boss  0.112    in     110.4 

Newcomb     o.ioi     in     111.5 


57  Tauri     (5. 8... 13. 7) 
R.  A.  4"  13™  12"        Decl.  +  13°  45' 

359° 17  34-76 

359.40  34.70 

359-40  34-30 


1909.725 
.780 
.838 


1909.78  359.32  34-59 

No  other  measures.    The  proper  motion  of  the  bright  star  is : 


Auwers 
Boss 


0:095    in    ioo?9 
0.121    in    103.4 


60  Tauri     (6.O.  .  .13.4) 

R.  A.  4"  15- II'        Decl.  +  13°  48' 


The  meridian  value  of  the  proper  motion  seems  to  be  too 
small. 

Measures  0:195  in  74?8 
Auwers  0.122  in  79.1 
Porter  0.124  'n  80.3 

Boss  0.143    in    84.8 


1909.760 
.780 


A  and  B 
233° 50 
233.54 
233-40 


79.36 
70.49 

79-27 


1009.79  233.48 

A  andC  (12.9) 

1909.782     333°27     io6"88 
•838     333-20     107.17 


1909.81 


333.23 


107.02 


16 


Burnham:   Pleasures  of  Proper  Motion  Stars 


No  other  measures.    The  proper  motion  of  60  Tauri  is  given 
from  meridian  positions : 

Auwers         o"oo,i     in     105^3 
Boss  0.118    in     105.2 


61  Tauri     (4.2.  ..12. 9) 
R.A.4"i6'"i"        Dccl.  +  17°  17' 


1909.706 
•725 
•744 
.760 


340?4S 
340.60 
340.70 
340.58 


106778 
106.60 
106.31 
106.69 


1909.73 


340-58 


106.60 


No  other  measures.    The  proper  motion  of  61  Tauri  is : 
Auwers         o7cxp6    in     io6?4 
Newcomb      0.112    in     105.6 
Boss  0.115    in    106.7 


64  Tauri     (5.1.  ..13.6) 
R.  A.4*i7nl  iT        Decl. +  17°  10' 

1909.722  245?63  137740 

.763  245.08  137.48 

.780  245.87  137.13 


I909-7S  245.53  137-34 

No  earlier  measures.    The  proper  motion  is : 

Auwers         o"ios    in     ioi?o 

Paris  0.163    in      9°.o 

Boss  0.125    in     109.2 

•/  65  Tauri     (4.6.  ..12.5) 
R.  A.  4"  18'"  13'        Decl.  +  22°  i' 


1909.722 
.780 
.782 


266?20 

265.67 

266.20 


135.35 
135.64 
135.62 


1909.74 


266.02 


135.54 


No  other  measures.    For  the  proper  motion  of  the  large  star 
we  have: 

Auwers  o7o78  in  134?! 
Newcomb  0.103  in  120.4 
Boss  0.113  in  115.2 


*'  67  Tauri     (5.6.  ..12.8) 
R.  A.  4"  i8ln  16"        Decl.  +  21°  56' 


1909.763 
.780 
.782 


208?42 

209.24 
209.00 


I07"l2 

106.93 
106.72 


1909.77 


208.89 


106.92 


No  other  measures,    x1  and  x2  Tauri  make  2  g,  App.  I.    The 
proper  motion  of  the  latter  is  : 

Auwers  07130  in  H3°o 
Newcomb  0.133  in  114.9 
Boss  0.131  in  117.2 


70  Tauri     (6. 8...  12. 8) 
R.  A.  4"  i8m  46"        Decl.  +  15°  40' 


1909.936 
10.049 
10.109 


342^92 
343-oS 
342-95 


124-59 
124.12 


1910.03  342.98  124.36 

No  other  measures.    The  proper  motion  of  70  Tauri  is  given. 
Auwers         0*074    in      g6?2 
Boss  0.115    in    104.6 

v3  69  Tauri     (4. 5...  12. 6) 

R.A.4hi9™8'        Decl.  +  22°  32' 

1909.763  288^58  104715 


.780 
.782 


288.77 
288.64 


104.32 
104.47 


1909.77  288.66  104.31 

No  other  measures.    The  proper  motion  of  the  large  star  is : 
Auwers         o7ioo    in    I09?9 
Boss  0.123    in     114.9 

71  Tauri     (4.8.  ..11.3) 
R.  A.  4"  19™  30'        Decl.  +  15°  21' 
1909.802  149? i i  136789 


09.936 
10.049 


149.32 
149.10 


136.67 
137.31 


1909.93  149.18  136.96 

No  other  measures.    The  proper  motion  of  71  Tauri  is : 
Auwers         07098    in      98?2 
Boss  0.117    in     103.3 


Piazzi  IV.  82     (6.0.  ..10.8) 
R.  A.  4"  20™  53'        Decl. +  21°  21' 
1909.782  232?57  161775 


.838 
.936 


232.70 
232.58 


161.22 
161.18 


1909.84  232.62  161.38 

No  other  measures.  The  proper  motion  is  given: 
Boss  o7n8    in     H2?4 

A.  G.  Ber.    0.093    in     118.1 

e  Tauri     (3. 9.  ..10.9) 

R.  A.4h2im37"        Decl. +  i8°SS' 
1909.706  268?i3  181749 


.722 
•  725 


268.30 
268.07 


181.74 
181.73 


1909.71  268.17  181.65 

No  other  measures.    The  proper  motion  of  E  Tauri  is  given : 
Auwers         07103    in     IO7?6 
Boss  0.120    in     108.4 

Newcomb      0.121     in     106.3 


Burnham:   Measures  of  Proper  Motion  Stars 


81  Tauri     (5.9..  .9.0) 
R.  A.  4"  23™  48'       Decl.  +  15°  26' 

1909.936            338?  59            161:84 
10.049            338.78            161.83 
10.109            338.70            161.56 

90  Tauri     (4.5.-  -13-5) 
R.  A.  4"  31'"  27*        Decl.  +  12°  16' 

A  and  B 

1910.684             321  °4                43"?» 
.835             322.8                 44.19 
.893             322.1                 44.30 

1910.03              338.69            161.74 

B  is  DM  (15°)  638.    No  other  measures.    The  proper  motion 
of  81  Tauri  is  : 
Amvers         o"io2    in     ioo?2 
Boss              o.no    in    105.8 
Porter            0.095     in     103.4 

83  Tauri     (5.6..  .11.4) 
R.  A.  4"  23™  52*        Decl.  +  13°  28' 

I9I0.933             ios?io            ni?93 
10.971             105.17            112.  oo 
11.104             105.00            111.65 

1910.80               322.1                 44.14 
A  and  C  (10.6) 
1910.684            3ii°87             H5"'7 
.720            3H-93             "4-73 
•777            311-75             114-98 

1910.73              311-85             114-96 

No  other  measures.    The  proper  motion  of  90  Tauri  is  given  : 
Auwers            o"o82     in     94^2 
Boss                0.104    in    95-5 

Piazzi  IV.  146      (5.  6...  9.  5) 
R.  A.  4"  32™  36"        Decl.  +  7°  38' 
A  and  B 
1909.666            248^8                7o"9i 
.722            248.9                70.98 
.744            248.6                70.75 

1910.97              105.09            in.  86 

No  prior  measures.    The  proper  motion  of  83  Tauri  is  given 
from  meridian  positions: 

Auwers         0^093    in     IO2?5 
Boss              o.iio    in     100.5 

48  Eridani     (4.0...  13.  2) 
R.  A.  4"  30™  19'        Decl.  —  3°  35' 

1909.760            i69?82              50^62 
.763             169.35              Si-25 
.780            169.64              50.86 

1909.71              248.8                70.88 
A  and  C  (9.0) 
1909.666            3i6?40           299*24 
.722            316.17            299.49 
.744            316.10            298.58 
.763             316.22            298.84 

1909.72              316.22            299.04 

B  and  C  are  respectively  DM  (7°)  680  and  679.     No  other 
measures.     From  the  meridian  observations  in  A.  G.   1 
we  have  the  following  : 
AB              1884.1             247?:               6p"2 
AC             1884.1             316.6            299.4 

The  proper  motion  of  the  principal  star  is  : 
Boss     0^082    in    po?7 

Piazzi  IV.  169     (5.  5.  ..II.  4) 
R.  A.  4"  37™  47"        Decl.  +  10°  55' 
A  and  B 

1910.777              97°38              79"36 
.780              96.48              79.40 
.835              97.08              78.98 

1909.77              169.60              50.91 

No  other  measures.    The  proper  motion  is  very  small,  and 
therefore  uncertain. 

Auwers         0:020    in    275?9 
Bou            0.002    in    180.0 
Newcomb     0.008    in    270.7 

89  Tauri     (6.1  ..  .12.0) 
R.  A.  4"  31"  17'        Decl.  +  15°  47' 

1910.684              49?83             143*01 
.780              49.70            142.67 
.835              49.85             142-58 

1910.40                96.98              79.25 

B  and  C  (12.6) 
1910.780            358?o                12775 
•  835            360.6                12.08 

1910.77                49-79            142.75 

No  other  measures.    The  proper  motion  of  89  Tauri  is  given  : 
Auwers         0^079    in      98?o 
Boss              0.094    <n     108.0 

lym.Xi               35.^.3                12.41 

The  proper  motion  of  the  principal  star  is: 
Boss     o"ooX    in    98?2 

18 


Bnniham:   Measures  of  Proper  Motion  Stars 


DM  (11°)  646     (5.  6.  ..13.  4) 
R.  A.  4''  39m  21*        Decl.  +  1  1°  29' 
A  and  B 

1911.663            202?8                38:81 
.720            204-3                39-o8 

97  Tauri     (5.  4...  9-  5) 
R.  A.  4"  44™  2is        Decl.  +  i8p  38' 
A  and  DM  (18°)  742 

1909.666            302?so             I74"38 
.744            302.50            174.66 
.859            302.70            174-47 

1911.69              203.5                38.94 
A  and  C   (13.1) 

1910.780            231^73              9o"59 
11.663            232.63              90.89 
11.720            232.88              90.45 

1909-75              302-57             I74-50 

No  other  measures.    The  proper  motion  of  97  Tauri  is  : 
Auwers         o"o75    in     n6?9 
Newcomb     0.090    in     112.6 
Boss               0.091     in     113.2 

7  Orioni*     (5.0..  .8.7) 
R.A.  4h48mi7'        Decl.  +  9°  57' 

1907.845            248^88             17  i  "23 
.865            248.80            171-54 
.879            248.60             171.28 
.974            248.53             171-76 

The  prior  measures  are  not  consistent  with  this  position. 
1887.09            247  ?92            1  71  '.'78            2n            Eng 
1895.09            248.20            172.59            211            Eng 
1907.89            248.70            I7I-45            4"            P 

A  comparison  of  a  mean  of  the  first  two  with  the  last  indi- 
cates a  motion  of  0*123  in  180°  for  the  large  star,  but  this  is 
uncertain,  and  further  measures  are  needed.     The  small  star 
is  DM  (9°)  682,  and  is  given  in  Weisse  and  A.  G.  Leipsic.    In 
the  former  the  observed  difference  is  erroneous. 

Auwers         0^132    in     i67?7 
Porter            0.134     in     166.0 
Gr.  to-yr.      0.019    in    270.0 
•Boss               0.145     in     157.8 

I  have  measured  a  nearer  star  : 
A  and  o  (12.8) 

1007.845                4°3                33"o8 
.865                3-1                32-86 
•974                3-6                33-28 

1911.39              232.41              90.64 

No  other  measures.    The  proper  motion  of  the  large  star  is  : 
Boss                o"o66    in    oo?8 

DM  (45°)  992     (6.5..-H-8) 
R.  A.  4"  42"'  54'        Decl.  +  45°  39' 

1909.818              8??20            i  01  "38 
.820              86.73             101.64 
.933              86.86            101.73 

1909.86                86.93             101.58 

No  other  measures.     The  large   star  is   Groombridge  884. 
The  proper  motion  is  given  : 
A.   G.   Bonn        o'.'676    in     145^3 
Paris                     0.692     in     145.4 
Porter                  0.666    in     147.2 
Groombridge        0.684    in     '45-4 

1  Orioni*      (4.5.  .  .IO.o) 
R.  A.  4"  43™  20s        Decl.  +  6°  45' 

1907.675            i  38^48              94"92 
.692            138.48              94-S6 
.769             138.15              94-36 

For  the  proper  motion  of  the  large  star  we  have  the  following 
measures  : 
1852.87            I28?o8            1  1  2^48           2n            O2 
1869.10            130.67            107.10            in            O2 
1884.15            133-75            102.22            2n            H2 
1907.71            138.37              94-6l            3"            P 

The  corrected  motion  of  i  Orionis  is  : 
o"472     in    86?  I 

This  is  given  from  meridian  positions  : 
Auwers           o!'444    in    87?9 
Porter              0.449     in    87.3 
Newcomb        0.466     in    83.9 
Boss                 0.472     in    87.6 

1907.89                  3-7                33-07 

101   Tauri     (7.0.  .  .12.2) 
R.  A.  4"  52"-  31'        Decl.  +  15°  44' 

1910.780            I45°50             I05?99 
.835             145-86             106.83 
.838             146.38             106.52 

1910.82              I45-9I             106.45 

No  other  measures.    Small  proper  motion. 
Auwers          o"o87     in     105^3 
Boss               0.104     m     109.1 

Burnham:   Measures  of  Proper  Motion  Stars 


13  Oriom'j     (6.O...9.5) 

DM  (37°)   1074     (8.  6...  9.0) 

R.A.5hi'°4'        Decl.  +  9°  19' 

R.  A.  5"  3m  5'        Decl.  +  37°  9' 

1907.675                 204?26                  I24''l  I 

1909.093            24i?s8             I35"io 

.692           264.50            124.05 

.706            241.40            I35-I7 

.769           264.18            124.37 

.763            241.35             134-77 

1909.722            264.95            123.90 

1909.52              241.44            135-01 

.744           264.90            123.75 

.760           264.58            124.25 

The  smaller  star  is  DM  (37°)  1072.    There  is  no  evi 

proper  motion  in  either. 

The  small  star  is  not  in  DM.    The  measures  are  : 
1852.90          255?20           128:21           2n           OS 

1878.02           241^04            I35''25           2n            I 

1876.14           259.02            126.50           2n           O2 

1907.71           264.31            124.18           3n            P 

1909.74           264.81            123.97           3n            P 

SD  (9°)  1094     (8.  3.  .-9-  2) 

The  correction  to  the  proper  motion  of  13  Orionis  is  very 

R.  A.  5"  6"'  1  7'       Decl.  —  9°  5' 

small. 

1908.750            230^83             i  19*03 

Measures      0:373    in     i8i?2 

08.884            231.23             H9-34 

Auwers         0.374    '"    183.8 
Porter           0.376    in    182.9 

08.898            231.34             H9-45 
1910.835            231.41             118.33 

Boss              0.381     in     179.1 

10.931             231.48            118.14 

The  comparison  star  is  given  in  A.  G.  Leipsic  from  which  we 

10.933            231.03             118.22 

have: 

ii.  088            231.20            117.76 

1884.1            26o°4            123:7 

The  comparison  star  is  SD  (9°)  1093.    The  other  is  s 

to  have  a  considerable  proper  motion.    This  is  supporte 

SD  positions  which  give  236°  :  116".    No  other  measur 

P  EriJani     (3.0.  ..II.  o) 

mean  results  of  the  foregoing  are: 

1908.84           23i?i3            119727           3n 

R.  A.  5*  I"  59'        Decl.  —  5°  IS' 

1910.95           231.28           ii8.il           4n 

1907.636            I42?40            116^73 
.675             142.40            117.06 

These  positions  indicate  for  the  approximate  propel 

•    A 

.692            142.34            117.01 

ot  A: 

o!'57    in    2i6?2 

The  only  measures  are: 
1879.95           I43°6o           116:65           2n           P* 

The  following  is  from  meridian  observations  : 

1907.67           142.38           "6.93           3n           P 

1890           226?8           131:5               Herz 

Giving  for  the  proper  motion  of  the  large  star  : 

Measures      o'ogo    in    238?7 
Auwers         0.135    in    236.2 

DM  (39°)  1257     (7.  6.  ..12.  7) 

Newcomb     0.112    in    228.3 

R.  A.  5"  1  11"  49'       Decl.  +  39°  13' 

Boss             0.118    in    228.2 

A  and  B 

1909.821            342?6               18:97 

• 

.859           342-7               18.90 

16       nonit     (5.    ...12.    ) 

1909.84             342.6               18.93 

R.  A.  5"  2"  44'        Decl.  +  9°  40' 

A  and  C  (9.0) 

A  and  R 

f\    ctllU     1  ' 

1909.760            121:95             88:34 

1909.802            3i7°64            189:72 
.818            317.63             189.87 

.838            122.13             88.80 

.821             317.31             189.53 

1909.80             122.04             88.57 

1909.81              317.53             189.71 

A  and  C  (10.3) 
1909.722           227°83            167^86 

A  is  the  principal  star  of  the  Herschel  cluster,  h  35 
times  called  red,  but  only  slightly  reddish  now.     T 

.760           227.72            168.18 

many  stars  much  nearer  A  than   C;  one  of  the  n 

.838           227.80            168.03 

measured  above.     C  is  DM  (39°)  1254.     For  compai 
have  ! 

Tnnn  11                   *yyi   iR                 lf&  tY> 

No  other  measures.     The  proper  motion  of  16  Orionis  is 
small. 


Auwers 
Boss 


0.074    in    94.6 


1878.04  3i7°52  icofoo  211  Bl 

1880.  3I7.6  189.4  A.  G.  Lund 

1893.19  317.6  190.01  Donner 

The  last  position  is  derived  from  astrographic  plates. 


20 


Burnham:   Measures  of  Proper  Motion  Stars 


Y  Oriom'j      (2.0.  ..12.  5) 
R.  A.  5"  18™  42'        Decl.  +  6°  14' 

1909.071             I44°07             I79"69 
.093            144.50            180.10 

.112                 I44-23                 179.84 

For  a  better  determination  of  this  hereafter,  I  have  connected 
two  small  stars,  not  previously  noted  : 

A  and  B  (14.7) 
1908.769            350?7                20*49 
.788            352-8                20.36 
.824            350.3                20.00 

1909.09                    144.27                  179.88 

The  earlier  measures  are: 
I8/9.9S            I43°9           178*18           211            p" 

From  the  two  positions  the  proper  motion  of  Y  Orionis  is  : 
0^070    in    358?3 

If  the   measures   are   substantially   correct,   the   motion   is 
practically  all  in  declination.    Further  observations  of  the  small 
star  should  be  made.    This  movement  from  meridian  observa- 
tions appears  to  be  uncertain  in  both  amount  and  direction. 
The  separate  results  differ  from  each  other  as  well  as  from 
that  given  above. 

Newcomb     o"oi8    in    2oo?o 
Auwers         0.029    in    241.1 
Boss              0.020    in    201.4 

DM  (34°)1044     (9.  3...  10.  2) 

R.  A.  5  "  igm  12*        Decl.  +  34°  4' 

1910.627                 29I?I2                 I92"54 

.720           291.50           192.76 
.742         291.33         193-32 

1908.79              351.3                20.58  . 
A  and  C  (10.8) 
1908.747              7i?25              61*24 
.766              71.20              61.25 
.769              7I.3I              61.48 

1908.76                71.25              61.32 

Lalande   10299      (8-5...II.O) 
R.  A.  5"  22m  29'        Decl.  —  3°  34' 

1907.769                 202?20                  I34"5I 

.772            201.82             134.21 
.791            202.30             I34-I5 
1911.104            202.28             131.02 
.107            202.13             130.96 
.142            202.07             131.46 
.145            202.38            131-29 

The  mean  results  are  : 

1907.78                   202?II                  I34"29 
I9II.I3                    202.21                  I3I.I8 

No  other  measures.    The  proper  motion  is  : 
Measures      0*933    in     198?  i 
Paris             0.912    in    199.4 
Porter           0.877    in    200.4 

SD  (3°)  1123     (8.7...IO.O) 
R.  A.  5"  25™  23"        Decl.  —  3°  42' 

1907.769           267^80            115723 
.772           267.62            H4-93 
.791            267.60            114.37 
.810           267.98            114-95 
1910.835            270.91            117.04 
.931            271.28            117.07 
•933            270.60             116.73 
.971            271.08            116.88 

The  mean  results  of  the  measures  are: 
1892.11           250^62            108*70           2n            Eng 
1907.78           267.75            114-87           4n           P 
1910.92           270.97            116.93           4n           f3 

Therefore  the  proper  motion  of  the  larger  star  is  : 
Measures      2*131    in     is8?8 
Porter           2.246    in     162.1 

This  star  is  supposed  to  have  a  small  parallax. 
e  Orionis      (2.O...IO.7) 

R.  A.  5"  30™  6"       Decl.  —  i°  17' 

1907.772              56^82             179*72 
•791              57-25             180.09 
.810              57.43             179-98 

1910.70              291.32            192.87 

The  principal  star  is  red.    No  sensible  proper  motion. 
1878.02           20X>?96           192*22           2n            Bl 

<j>  Aurigae     (5.4) 
R.  A.  5"  ig"1  42'       Decl.  +  34°  22' 

A  and  D  (8.5) 

1908.747              I4?6o           207*27 
.766             14-65            207.35 
.769             14.03            207.14 

1908.76               14-43            207.25 

For  comparison  we  have  : 
1874.1             i4?o             206?!                            A.  G.  Leid. 
1879.48           14.39           206.45           2n           Bl 

It  is  more  than  probable  that  the  apparent  change  in  distance 
is  due  solely  to  the  proper  motion  of  the  large  star,  although 
the  other  is  bright  enough  to  have  some  motion  of  its  own. 
This  is  DM  (34°)  1049.    The  proper  motion  of  <t>  Aurigae  is 
given  from  meridian  positions  : 

Auwers         0*047    in    203?4 
Boss               0.056     in     175.0 

21 


Burnham:   Measures  of  Proper  Motion  Stars 


The  only  measures  are  : 
1879.89           57?os            i79"92           an            P* 
I907-79           57-17            J79-93           31            P 

If  the  large  star  has  any  proper  motion  at  all,  it  is  evidently 
far  below  the  errors  probable  in  observations  with  any  instru- 
ment ;  and  any  result  deduced  from  such  positions  has  no  mean- 

Lalande   10797      (7.4...I1.I) 

R.  A.  5"  37™  47'        Decl.  +  37°  15' 

1009.093             in°49             129791 
.802             111.27             129.09 
.818             111.23             129.25 
.821             111.46             129.06 

ing.    This  appears  from  the  transit  observations  . 
Auwers          o".O2O    in     272^9 
Newcomb      o.ooi     in    352.9 
Boss              0.002    in    180.0 

Pi.xiiV.  146     (6.  7...  9-6) 
R.  A.  5"  31™  36'        Decl.  +  53°  2/ 

1907.731              70°  58              97"30 
.769              70-38              97-64 
.788              70.60              97-55 
.810              70.76              97-14 
.845              70.70              97-55 

These  stars  have  exactly  the  same  proper  motion. 
1891.26           70^78           97747           2n           Eng 
1907.79           70.60           97-44           5"           P 

The  small  star  is  DM  (53°)  935-    Both  are  in  A.  G.  Harvard, 
but  the  difference  in   declination   is  erroneous.     The  proper 

1909.63              111.36            129.33 

The  earlier  measures  are  as  follows  : 
1880.52            1  14°  13            148734           211            Bl 

Therefore  the  proper  motion  of  Lalande  10797  is  : 
07693    in     I32?2 

From  meridian  positions  this  has  been  given  : 
Stumpe          07689    in     I35?7 
Porter           0.688    in     137.2 

Lalande  10959      (8.  7...  9.  2) 
R.  A.  5"  40™  10"        Decl.  —  15°  6' 
A  and  B 

1908.060            I58?35             142793 
.159            158.00             142.90 
•750            157-73            142.77 

Stumpe          o?570    in     i8i?4 
Greenwich     0.510    in     179.2 
Porter           0.539    in     182.1 
Boss              0.512    in     178.7 

For  an  independent  determination  of  this  proper  motion  here- 

1908.32             158.03             142.87 
A  and  C  (9.7) 

1908.060           22i?8o            168778 
.159           221.72            167.76 
.750           221.60            167.98 

after,  I  have  measured  a  faint  star  from  each  : 
A  and  a  (12.7) 

1907.788            301  °oo             81792 
8.000           301.50             82.15 
8.063            302.20             82.69 

1908.32             221.71            168.17 

B  and  C  are  respectively  SD  (15°)  1153  and  1150.    The  fol- 
lowing are  the  only  other  measures  : 
AB            1894.04            I57°92            I45"62           4n           Eng 
AC            1894.04           221.03            168.70           311            Eng 

1907-95             301-57             82.25 

1009.859           302?20             82778 
09.936           302.68             82.97 
10.605            302.16             83.02 

Comparing  these  positions  with  the  recent  measures,  we  have 
for  the  annual  motion  of  the  principal  star  : 
AB           R.  A.  +  o7o9i           Decl.  —  o7i7O 
AC                        0.081                        0.120 

1910.13             302.35             82.92 
B  and  b  (12.4) 

1907.788            I59°62             I3>"'9 
8.000            159-48            131-02 
8.063            '59-58            131-33 

+  0.086                    —0.145 

Therefore  the  corrected  proper  motion  of  Lalande  10959  's  : 
o7t69    in     149^3 

This  has  been  given  from  meridian  observations  : 

1907-95              '59-56            131.18 

1009.859            '59°27            129^96 
09.936             '59  25             129.06 
10.605             '59-03             130.00 

Porter           0.162    in     133.4 

There  are  other   small   stars   near,   two   of  which   I   have 
measured  : 
A  and  a  (i3-l) 

1910.13              159  '8            129-67 

A  and  DM  (53°)  93O  (9.0) 
•o»i              A  R   A  iff*        A  DPC!  78*8        A  G   Harv 

1008.060                 228?62                    277II 

.159           227.10            26.68 
.750          227.63           27.14 

1909.89                    76.2                    98.0        P 

1908.32           227.78          26.98 

Burnham:   Measures  of  Proper  Motion  Stars 


C  and  c  (10.1) 
1908.159  212^58 


•  750 


212.27 


34"3i 
34-74 


1908.50  212.42  34-52 

A  and  B  arc  given  in  A.  G.  Washington. 

134  Tauri     (5-O--  .10.4) 
R.  A.  5"  42m  48'        Decl.  +  12°  37' 

i i 8" 69 
118.97 
119.04 


Lalandc  11327      (7.0...) 

R.  A.  5"  52™  25'        Decl.  —  4°  39' 

A  and  C  (9.0) 
1907.865  297?03  i/8'.'75 


1909.818 
-859 
.936 


129.27 
129.15 


1909.87 


129.22 


118.90 


The  proper  motion,  if  any,  is  small.    No  other  measures. 
Auwers         0*032    in    252?o 
Boss  0.029    in    206.9 


8  Aurigae     (4.0... 9. 6) 
R.  A.  5"  49"'  39'        Decl.  +  54°  16' 


7.964 

7-997 

8.022 

206.85 
296.82 
296.85 

177.80 
178.23 
178.64 

1907.96 

296.89 

178.35 

A 

and  B  (13.8) 

1908.022 

i°5 

4"  14 

.079 

.102 

0-5 
1.6 

4-25 
4.  ii 

1908.07 

1.2 

4-17 

A  and  B 

1907.845 
7-879 

27  i  "25 
27L35 

H5"oa 

II5-32 

8.000 

271.03 

115.40 

8.044 

271.40 

115.12 

1907.94 


271.26 


115.23 


A  and  DM  (54°)  972  (9.3) 
1907.845  66?62  io6:'9i 

8.000  66.78  I97-I9 

8.044  66-95  197-27 

1907.96 


66.78          197.12 
DM  (54°)  972  and  a  (10.2) 
1908.000  iii?35  93'-45 


.063 


in. 60 


93-52 


P  1908. 03  in.47  93.48 

•  the  proper  motion  of  8  Aurigae  we  have  the  following 
ures : 

1888.24  270?oo  H3"36  2n  Eng 

1894.26  270.37  114.31  2n  Eng 

1907.94  271.26  115-23  411  P 

These  positions  give  for  the  corrected  proper  motion  of  the 
large  star: 

0*156    in     I45?3 

This  is  given  from  meridian  observations : 

Auwers  o"i42     in     I5O?O 

Groombridge        0.157     in     148.7 
Newcomb  0.157    in     138.4 

Boss  0.153     in     145.8 

The  DM  star  is  in  A.  G.  Harvard,  and  the  relative  positions 
compared  with  the  above  measures  (68?2 :  iogl'6  for  1877)  give 

Pa  proper  motion  of  o'.'i78  in  I3i?3  which  is  doubtless  in  error, 
as  there  is  no  probability  of  the  small  star  having  any  sensible 
movement.  This  will  appear  from  later  measures  of  both  stars. 


AB  is  the  double  star,  Aitken  322,  discovered  in  1002  (P  G.  C. 

3082).    The  measures  show  that  the  small  companion  is  moving 

with  the  principal  star.    For  AC  we  have : 

1892.11  295?68  I76"77  211  Eng 

1907.96  296.89  178-35  4"  P 

Therefore  the  proper  motion  of  A  is : 
0*273    in    i8s?o 

C  is  SD  (4°)  1308.    I  do  not  find  it  in  any  other  star  cata- 
logue.   The  motion  of  A  from  transit  observations  is  given : 
Paris  0*244    in     i8o°o 

Porter  0.221     in     180.0 


1  Geminorum     (4. 3... 13.0) 
R.  A.  5"  56™  55'        Decl.  +  23°  16' 

96"57 
96.68 
96.68 

96.64 


1911.720 
•775 
.813 


26?28 

26.03 

26.18 


1911.77 


26.16 


No  other  measures.    The  proper  motion  is  given : 
Auwers         o"o94    in     i88?4 
Hedrick        0.109    i'1     !79-2 
Boss  0.108    in     184.4 


Lalande  11471      (6.O. .  .9.6) 
R.  A.  5"  58'"  7'        Decl.  +  35°  24' 


1907.731 
.769 

.788 


16:30  120:30 

15.75  120.70 

15.85  120.39 


For  the  proper  motion  we  have : 

1892.26  I5°i7  n6"o2  in 

1007.76  15.97  120.46  3n 


Eng 


As  the  first  position  is  only  a  single  observation,  the  result- 
ing value  of  the  proper  motion  may  not  be  any  better  than  the 
others.  The  results  are : 


Measures 
Stumpe 
Porter 
Paris 


o'.'3O5 
0.315 
0.327 
0.306 


2i6?o 
203.8 
206.1 
196.5 


Burnham:   Measures  of  Proper  Motion  Stars 


40  Camelopardali      (5  .4.  .  .  ID.  5  ) 

R.  A.  6"  4™  54'       Decl.  +  60°  2' 


1908.769 
.804 
.824 


3SS°66 
355-88 
356.22 


102763 
102.65 
102.73 


1908.80 


355-92 


102.67 


In  the  first  instance  this  was  taken  by  mistake  for  4  Lyncis, 
which  has  a  similar  companion,  with  practically  the  same  angle, 
distance  and  magnitude.  There  are  no  other  measures.  The 
proper  motion  of  40  Camel,  is  uncertain. 

Auwers        o7oi6    in    isi?8 
Boss  0.048    in     115.8 


Piazzi  VI.  49      (7.O...IO.2) 
R.  A.  6"  io™  55'       Decl.  +  5°  8' 


1907.769 

246723 

189786 

.791 

246.48 

189.60 

.810 

246.48 

189.50 

The  only  measures  are: 

1891.21           247?ss 

I9I787 

2n 

Eng 

1907-79          246.40 

189.65 

3" 

P 

From  which  the  proper  motion  of  A  is : 

Measures  07267  in  306^9 
Stumpe  0.312  in  301.7 
Porter  0.300  in  303.3 
Boss  0.283  in  303.6 

For  a  further  independent  value  of  the  motion  of  A,  I  have 
connected  two  faint  stars : 

A  and  a  (13.0) 


1911.796 
11.832 
12.066 

264.83 
264.83 

S87so 

59-15 
57-86 

1911.90 

264.93 

58.50 

A  and  b  (13.0) 

1911.796 

23i°73 

69711 

11.832 

231.30 

69.64 

12.066 

231.17 

69.22 

1911.90 

231.40 

69-32 

P  Cant*  Maj     (2.0... 9. 8) 
R.  A.  6*  17™  24'       Decl.  — 17°  54' 

1908. 102  339°8o  185787 

.192  339-86  185.97 

The  only  measures  are: 

1879.89  339?os  184796  2n 

1908.15  339.83  185.92  2n 


It  is  evident  that  the  proper  motion  of  the  large  star  is  smaller 
than  the  probable  errors  of  observations  with  the  micrometer, 
to  say  nothing  of  meridian  instruments,  and  any  result  from 
either  at  this  time  would  be  of  no  certain  value.  The  great  dis- 
cordance in  the  values  heretofore  given  by  the  authorities  is 
sufficient  evidence  on  this  point. 

Auwers         o"o2S    in    293?6 

Newcomb     0.009    in    294.2 

Boss  0.007     in    270.0 

The  measures  imply  a  larger  motion,  and  nearly  equal  in 
both  co-ordinates.  Measures  of  these  stars  half  a  century 
hence  will  contribute  something  of  value  to  this  question. 


6  Lyncit     (6.O. .  .9.0) 
R.  A.  6"  20"'  22'       Decl.  +  58°  15' 

1907.074  ii6?62  I7975I 

8.000  116.65  179-52 

8.025  116.93  179.61 

The  small  star  is  DM  (58°)  933. 

1851.61            I2i?70           i887i7  311  O2 

1861.35            120.90           186.56  in  OS 

1884.25            119.00            183.08  211  H2 

1908.00           116.73            179-55  3"  P 

These  measures  give  for  the  proper  motion  of  6  Lyncis: 
07307    in     l8o?9 

From  transit  observations  we  have: 

Auwers         o?334    in  l84?6 

Porter           0.334    "i  184.7 

Newcomb     0.326    in  179.6 

Boss              0.330    in  181.6 


10  Monocerotii     (5.0. ..9. 2) 
R.  A.6h22m3'        Decl.  — 4°  41' 

A  and  B 
1907.769  256? 53  77"37 


.772     256.72 
.791     256.95 

A  and  C  (9.2) 
1907.769     231  ?07 

77.22 
77-49 

80:72 

.772 

231.00 

80.62 

.791 

230.85 

80.56 

The  only  measures  are: 

AB          1879.89         256^60  767g6  2n  P 

1907-78         256.73  77-36  3n  p 

AC          1879.89         231.00  80.91  211  p 

1907.78         230.97  80.63  3n  P 

It  is  evident  that  the  proper  motion  is  much  too  small  to  be 
separated  from  the  errors  probable  in  any  class  of  observations. 
Repeating  these  measures  after  a  long  interval  will  furnish  data 
on  this  point 

The  meridian  positions  give  most  contradictory  results : 
Auwers         07032    in    326?4 
Newcomb     0.016    in      67.3 
Boss  0.014    in    347.9 


Burnham:   Measures  of  Proper  Motion  Stars 


8  Lynci*     (6.0... 9.0) 

R.  A.  6"  26™  28'       Decl.  +  61  °  35' 

A  and  B 


1907.848 
8.000 
8.025 

79°77 
80.02 
80.02 

I56:'84 
157-21 
156.81 

1907.96 

79-94 

156.95 

B  and  b  (12.7) 

1907.848  252?75  71:06 

8.000  252.42  71.16 

8.025  252.53  70.78 


1907.96 


252.57 


71.00 


The  faint  star  between  A  and  B  is  measured  for  ascertaining 
whether  or  not  B  has  any  motion. 
The  measures  of  AB  are : 

1854.31  84?63  I44"53  3" 

1884.25  81.92  151-27  2n 

1907.96  79.94  156.95  3n 


OS 
H2 


These  positions  make  the  proper  motion  of  8  Lyncis: 
0:327    in    217^3 

Some  of  the  values  from  transit  observations  are : 
Auwers         0:352    in    2l6?6 
Newcomb     0.335    in    214.4 
Boss  0.342    in    214.6 


DM  (38°)  1539     (6. 3... 10.7) 
R.  A.  6"  28m  18'        Decl.  +  38°32' 


1008.884 
.898 
.900 


222:25 

222 . l8 
222.35 


117.97 
117.90 
II7-79" 


1908.89  222.29  117.89 

The  only  other  measures  are: 

1878.58          22i?74  118:60  2n 


Bl 


The  large  star  is  reddish  (Groombridge  1190).    The  proper 
motion  is  given : 

Greenwich     0:030    in    195^8 
Boss  0.036    in     165.0 


V  Geminorum     (2. 5. ..II. 8) 
R.  A.  6"  28™  26'        Decl.  +  16°  30' 

A  and  B 

1907.692  295?45  135:51 
.772  295.13  135.57 
.807  295.20  135-36 

A  and  C  (11.5) 

1907.692  335°25  143-60 

•772  335-40  143-50 

•807  335-23  143-41 


1880.03 
1907.76 

294°7o 
295.26 

135-48 

in 

P 

P 

1880.03 
1907.76 

335-50 
335-29 

141.74 
143.50 

in 
311 

ca  oo. 

Unfortunately  the  early  positions  depend  on  a  single  night. 
This  will  be  remedied  by  measures  after  another  quarter- 
century  interval. 

AB 


AC 


The  mean  motion  from  both  stars  is: 

Measures  0:083  in  I4O?6 
Auwers  0.047  in  140.0 
Newcomb  0.067  in  135.2 
Boss  0.065  in  136.5 


50  Aurigae 

R.  A.  6"  30™  46"        Decl.  +  42°  36' 

A  and  B  (10.6) 

1907.791  iog?23  52:69 

.810  109.08  52.32 

.845  IQ9-45  52-53 

1907.81              109.25  52.51 

A  and  C  (11.3) 

1907.791              74?75  99:40 

.810              74-83  99-42 

-845              75-35  99-32 


1907.81  74.98  99.38 

No  other  measures.  The  proper  motion  of  50  Aurigae  is 
small.  •» 

Auwers         o"o6p    in    192?! 
Boss  0.061    in    174.8 

This  was  measured  in  the  first  instance  by  mistake  for  58 
Aurigae.  The  similarity  in  the  arrangement  of  the  three  com- 
ponents will  be  noticed.  From  the  Astrographic  Catalogue  we 
have  for  AB : 

1894.95  no?o  53:25  Donner 


5&  Aurigae      (5.2) 
R.  A.  6"  42™  17'        Decl.  +  41  °  55' 

A  and  B  (10.2) 

1907.807             I02?88  40:60 

.810            103.06  40.71 

.845             103.05  40.70 

1907.82              103.00  40.67 

A  and  C  (n.8) 

1907.807              75?o6  117:78 

.845              75.72  117.67 


1907.82  75.84  117.72 

No  other  measures  of  C.  For  AB  we  have : 

1888.28            107^67  41:03           211  Eng 

1894.25            106.15  40.82           2n  Eng 

1894.95           106.3  40.66  Donner 

1907.82            103.00  40.67           3n  fj 

A  mean  of  the  first  two  and  the  last  gives  the  proper  motion 
of  58  Aurigae: 

0^156    in    189^2 


Biirnhain:   Measures  of  Proper  Motion  Stars 


This  is  given  from  meridian  positions: 

Groombridge       0^124    in     i88?8 


Auwers 

Porter 

Paris 

Newcomb 

Boss 


0.158  in  214.5 

0.145  in  204.6 

0.131  in  180.0 

0.150  in  202.4 

0.136  in  187.5 


Oxford  (Z26°)   19211      (12.4) 
R.  A.  6"  45™  47:6        Decl.  +  25°  4'  4^2 

This  place  for  1900  is  from  an  Oxford  astrographic  plate 
taken  1908.08.  From  a  comparison  of  this  with  an  earlier  plate, 
the  proper  motion  is  given  : 

o72O5    in    2Oi!o 

A  and  B  (10.5.. .12.0) 
1910.760  I07?36  59799 

•777  107.72  60.08 

.780  107.28  60.51 

1910.77  107-45  60.19 

A  and  DM  (25°)  1486  (9.5  m) 

1910.760  I07?43  141*20 

•  777  107.75  Mi  20 

.780  107.08  141.60 


1910.8 
1900. 


1910.77  107-43  I4L33 

A  and  DM  (25°)  1478  (8.5) 
A  R.  A.  +  49!  3       A  Decl.  +  7676       p 

49.4  82.8       A.  G.-Oxf. 


The  last  comparison  star  is  A  513. 

Groombridge  1228     (6.0... II. 3) 

R.  A.  6"  47"'  44'        Decl.  +  70°  58' 

1910.049  356?35  n6782 


.091 
•  093 


356.55 
356.48 


116.73 
117.50 


1910.08  356.46  H7-02 

The  large  star  has  no  sensible  proper  motion. 
Groombridge    o7o22    in     163^3 

Probably  unchanged.    The  prior  measures  are  discordant  in 
distance: 

1878.24  356?33  117796  in  Bl 

79-81  355-95  116.01  in  Bl 

79-83  355  58  "7.41  in  Bl 

80.19  356.13  116.66  in  Bl 

39  Geminorum      (6. 4... 12. 4) 
R.  A.  6"  5 1 "  27'        Decl.  +  26-14' 
1910.760 


.835 


28?2 
28.1 
27.6 


28735 
28.06 
28.21 


1910.79  28.0  28.21 

No  other  measures.    The  proper  motion  of  39  Geminorum  i> 
given : 

Auwers         o7io8    in    294?7 
Boss  0.183    in    298.0 


Nova  Geminorum  No.  2 

R.  A.  6"  49'"  12'     Decl.  +  32°  15' 

A  and  C  (3. 8... 12.0) 

1912.197  98^87  79^46 

.236  98.68  79.60 

.255 98.78  79.6o 

1912.22  98.78  79-55 
A  and  B  (13.5) 

1912.236  l6?3  1 1 78s 

.255 15-1 11.83 

1912.24      16.2  11.84 

The  first  measure  of  the  new  star  was  made  on  the  night  of 
March  19  when  the  brightness  was  about  maximum.  At  this 
time  the  new  star  was  a  most  brilliant  red.  Later  it  had  de- 
clined to  about  6  m.  The  place  given  above  is  for  1912. 


R  Geminorum     (Var.  ..11.4) 
R.  A.  7"  o"1 8"        Decl.  +  22°  53' 

1910.049       200?IO       172767 

.093    200.75    172.30 


1910.07 


200.42 


172.48 


The   principal   star,   which    is    variable,   is    DM  (22°)  1577. 
Probably  fixed. 

I880.05  200?26  173^73  211  Rl 


Piazzi  VI.  329  and  332      (8.0... 8.0) 
R.  A.  7"  i1"  9"        Decl. +  15°  43' 

A  and  B 

1908.102      o8!84  172707 

.159      98.92  171-73 

.192      98.50  172-03 


1908.15       98.75     171.94 

B  and  C  (11.3) 

1908.102  87^05  88788 

.159  87.12  88.95 

.192  87.07  89.00 

1908.15  87.08  88.94 

The  only  direct  measures  of  AB  are : 

1891.21  98?6s  172750  211  Eng 

1908.15  98.75  I7I-94  3ii  P 

Both  stars  are  found  in  many  of  the  star  catalogues,  from  all 
of  which  it  appears  that  there  has  been  no  relative  motion.  The 
relative  positions  in  A.  G.  Berlin,  Paris  and  Cincinnati,  in  con- 
nection with  the  more  recent  measures,  show  a  common  proper 
motion. 

From  transit  positions  the  proper  motions  arc  given : 

A  B 

Porter  o7222    in     191^6  07214    in     igo°4 

A.  G.  Ber.        0.232    in     102.6  0.197    in     188.0 

Paris  0.262    in     180.0  0.250    in     180.0 

There  are  no  other  measures  of  the  faint  star  C. 


26 


Burnham:   Measures  of  Proper  Motion  Stars 


20  Monocerotit     (5.  8...  12.  9) 
R.A.7h4mi6s        Decl.—  4°4' 

A  and  B 
1909.838            239?23              ss"o2 
09.936            237.72              S4-4S 
10.093            238.50              54.51 

The  other  measures  are  : 
1886.20            107^65            127752           2n            Eng 
1894.24            107.70            127.54            2n            Eng 
1907.82            107.81            127.43           3"            P 

It  is  a  little  strange  that  the  distant  small  star  should  have 
exactly  the  same  proper  motion  as  the  large  star,  if  that  motion 
is  real  as  shown  by  meridian  observations  : 
Auwers         o'.'iO3    in    312^6 
Boss              0.016    in     184.9 

To  show  this,  I  have  connected  each  with  a  fainter  star  in  the 
field.    It  is  very  probable  that  A  and  B  have  no  sensible  motion. 
A  and  a  (n.6) 

1907.845              I7?93              49'.'i2 
.848              17.55              49.23 
.865              16.87              48.67 

1909.96              238.48              54.66 

A  and  C  (10.7) 
1909.838            339-40            i8s"99 
09.936            339-00            186.21 
10.093            339-05             186.31 

1909.06              339-iS             186.17 

C  and  D  (12.2) 
1909.936            I26?os              85.47 
10.093             126.05              85.64 

1907.85                17.45              49-01 

B  and  b  (u.o) 

1907.845             I92?75              93"i5 
.848             192.42              93.54 
.865             192.77              93-50 

1910.01               126.05              85.55 

The  proper  motion  of  20  Monocerotis  is  given  : 
Auwers         o"2O7    in    358?8 
Paris              0.209    in    360.0 
Porter            0.224    in     355.  o 
Boss               0.217     in     360.0 

The  following  are  the  prior  measures  of  AC  : 
1886.23           339?62            I9o"s6           2n            Eng 
1894.27            339.6o            189.29            2n            Eng 

A  mean  of  these  compared  with  the  present  position  gives 
for  the  proper  motion  of  the  large  star  : 
o"205     in     361  ?3 

As  a  further  check  on  the  relative  motion,  I  have  measured 
a  small  star  from  each. 

22  Monocerotit      (4.  2.  ..13.  7) 
R.  A.  7"  5'"  44"        Decl.  —  o°  18' 

1910.780            I7o?4                31783 
10.933             169.7                32.12 
11.142            170.3                32.09 

1907.85              192.65              93.40 

Oxford  (Z  26°)  20428     (8.2) 
R.  A.  7"  7™  49!  1  5        Decl.  +  25°  10'  s8"7 

This  is  identical  with  the  8.3  m  star,  DM  (25°)  1613.    The 
place  given  here  for  1900  is  from  an  Oxford  astrographic  plate 
taken  1908.08.    Compared  with  a  prior  plate,  the  proper  motion 
is: 
0^368    in    255?7 

A  and  B  (11.9) 
1910.760             156^21              5o''6s 
.780            155-96              50.16 
.856            155-63              50.03 

1910.80              155-93              50.28 

A  and  DM  (25°)  1612  (9.4) 
1910.85           249?23           227^41            p 
1855.               252.               252.                DM 

The  last  star  is  not  in  A.  G. 

44  Camelopardali*     (7.5.  .  .  1  1  .  l  ) 
R.  A.  7"  8m  14'        Decl.  +  59°  8' 

1910.148                7?45             i68"gi 
.164                7.64             169.22 
.203                7.32             168.76 

1910.95              170.1                32.01 

The  faint  companion  first  noted  by  Jonckheere.     No  other 
measures.    The  proper  motion  of  the  large  star,  if  any,  is  small  : 
Auwers         o"o34    in    322?: 
Boss              o.oii     in    344.8 

Bradley    1048     (7.  3...  10.8) 
R.  A.  7"  7'"  7'        Decl.  +  24°  55' 

A  and  B 
1907.807             I07?7o             127^62 
.845             107.88             127.07 
.848             107.85             127.61 

1910.17                  7-47             168.96 

Change  in  angle  from  proper  motion. 
1878.52           6?28            i6S':8s           2n            Bl 

The  proper  motion  of  A  is  small  : 
Auwers                o'.'o82    in    248?6 
Groombridge        0.033     in     254.4 

27 


Bitrnhatn:   Measures  of  Proper  Motion  Stars 


DM  (22° 

)  1620 

(7-2. 

.  .10.0) 

A 

and  D 

(II. 

i) 

R.  A.  7"  8™  23' 

Decl.  +  22°  10' 

1907 

-772 
.810 

76? 
76. 

40 
40 

124^75 
125.22 

1908.769 

263 

°30 

94*49 

•  997 

76. 

93 

124 

74 

.788 
.843 

264.03 
263.90 

94-52 
94.88 

Ton^ 

A 

.8lO 

and  E  (10.9) 

•}  f  r»°o7 

i-?8"8^ 

1908.80 

263 

-74 

94-63 

jyu/ 

7 

•997 

oiu-yo 
311.02 

*  *j°.u*} 
138.29 

The  only  prior  measures  are: 

8.000 

3". 

18 

139 

05 

1879.52           263?; 

o 

95"40 

2n           Bl 

The  results  of  all  the  measures  are  : 

Further  observations 

are  needed. 

The  principal  star  has             AC          l879- 

98 

22?7O 

97' 

02 

in 

P1 

been  called  red,  but  only 

yellowish  now. 

1907. 

89 

23.37 

98. 

48 

4" 

P 

AD         1879.99 

76.70 

123 

15 

2n 

P 

1007.86 

76.58 

124 

90 

3" 

P 

Oxford  (Z26°) 

20681 

(IO.I) 

AE         1879 

99 

309.95 

138 

98 

2n 

P 

1907  86 

311.04 

138 

72 

3n 

P 

R.  A.  7"  lo™  46:57 


.  +  27°  3'  3278 


This  is  the  9.2  m  star,  DM  (27°)  1350.    The  place  for  1900 
is  from  the  Oxford  Astrographic  plate  taken  1908.08.    From  a 
comparison  with  an  earlier  plate  the  proper  motion  is  found  : 
07  13  1    in    i8o?o 


A  and  C  (9.9-  •  -12-7) 


1910.760 
.780 
.856 


I34?93 
134-73 
I3S  -97 


29*02 
29.34 
29.46 


1910.80  135-21  29.27 

There  is  a  14.5  m  star  8"  or  10"  from  A. 

Tl  Carl*  Majorit     (  2 . 5 . .  .  8 .  o) 

R.  A.  7"  19™  21'       Decl.  — 29°  4' 


1909.206 
.227 


28S? 12 
285.35 


178772 
178.71 


p" 


1909.22        285.23       178  .71 

The  only  prior  measure  is  the  following: 

1880.00     28s?o      178765     2n 

Obviously  these  stars  have  no  proper  motion.    This  is  also 
apparent  from  the  meridian  observations  : 

Auwers  o7o3O  in  2o8?o 
Newcomb  0.008  in  31.0 
Boss  o.oio  in  293.6 

There  is  a  large  error  in  the  relative  positions  from  the 
Washington  zones. 

1849  285^7             18573  Wash.Z. 

1875  285.5             178.6  Cord.  G.  C. 


P  Cant*  Minor!* 

R.  A.  7"  20"  39"       Decl.  +  8°  32' 

A  and  C  (11.2) 

1907.772              23?43  98705 

7.810              23.23  08.23 

7-997              23.35  9894 

8.000             23.48  98-69 


From  these  measures  the  motion  of  A  is : 


AC 
AD 

AE 


R.  A.- 


-07058 

•  059 
.066 

— 0.061 


Decl.  —  07032 
.023 
.068 

—  0.041 


Giving  for  the  proper  motion  of  {$  Canis  Minoris: 
07073    in    236!: 

From  meridian  positions  we  have : 

Auwers         0^069    in  247?! 

Newcomb      0.066    in  225.4 

Boss  0.066    in  229.6 


22  Lynch     (5.5..  .10.3) 
R.  A.  7"  20m  49*       Decl.  +  49°  54' 


1909.703 

303:78 

169717 

.722 

303.70 

169.42 

•744 

303-70 

169.20 

1909.72 

303-73 

169.26 

The  small  star  has  been  previously  measured  as  follows: 
1888.29  303^87  165792  2n  Eng 

1894.25  303-77  167.27  2n  Eng 

From  the  change  shown  in  these  observations,  Engelhardt 
inferred  that  the  small  star,  after  allowing  for  the  accepted 
movement  of  22  Lyncis,  had  a  large  proper  motion  of  o7ioo, 
and  evidently  this  must  be  the  case  if  the  measures  were  sub- 
stantially correct ;  or  else  the  motion  of  the  large  star  as  de- 
rived from  meridian  observations  is  much  too  small.  As  the 
chances  are  enormously  against  a  star  of  this  magnitude  having 
any  sensible  movement,  it  was  carefully  re-measured.  Ob- 
viously the  suspected  motion  is  not  confirmed  by  the  recent 
observations.  One  or  the  other  of  the  early  positions  must  be 
affected  by  a  considerable  error,  accidental  or  otherwise.  If 
we  reject  the  first,  and  compare  the  other  with  the  results 
given  above,  we  have  substantially  the  proper  motion  of  A  as 
given  in  the  star  catalogues. 


Measures 
Groombridgc 
Auwers 
Boss 


07129  in  I20?8 

0.135  in  124.8 

0.089  >n  154-3 

0.145  'n  125.8 


28 


Burnham:   Measures  of  Proper  Motion  Stars 


Therefore  it  is  practically  certain  that  the  small  star,  like 
nearly  all  other  of  this  magnitude,  has  no  sensible  movement. 
This  will  appear  independently  hereafter  from  the  following: 

B  and  C  (12.0) 

1909.744            I5°°I7             110*64 
.760            150.05             111.07 
.763             150.28            110.82 

No  other  measures.    The  proper  motion  of  the  large  star  is 
given  : 
Auwers         o"io5    in     ig6?9 
Boss             0.119    in    !93-o 
Newcomb     o.m     in     191.1 

25  Monocerotis     (5.0...  10.7) 
R.  A.  7h3imi98        Decl.  —  3°  51' 

A  and  C 
1909.838            349°67             I2i"62 
•859            349-57             121.86 
•933            349-49            121.74 

I909-75              150.17             110.84 

62  Geminorum     (4.5...IO.6) 
R.  A.7»2i°'34'        Decl.  +  32°!' 

A  and  B 
1909.780            291^10            2i4"o6 
.818            291.20            213.95 
.821            291.06            213.16 
.838            291.40            213.33 

1909.88              349.58 

The  small  star  is  SD  (3°)  1978  (9.8) 
ures  are: 
1887.18           349?07            122^70 
1894.27           349.38           122.38 

121.74 
The  previous  meas- 

2n           Eng 
2n           Eng 

1909.81              291.19            213.63 

bis  star  has  been  previously  measured  as  follows : 
1886.22  292^85  2ii!'s6  2n  Eng 

1894.25  292.15  212.57  2n  Eng 

Vs  these  two  positions  showed  a  much  larger  relative  change 
than  could  be  accounted  for  by  the  accepted  proper  motion  of 
62  Geminorum,  Englehardt  inferred  (A.  N.  337*3)  that  the  small 
star  had  a  motion  of  o''i52  in  the  direction  of  239°. 

The  recent  measures  do  not  support  this  change,  and  are  not 
accordant  with  one  or  the  other  of  the  early  positions.  It  would 
appear  probable  that  there  is  some  accidental  or  other  error  in 
one.  A  comparison  of  the  position  of  1886  with  that  of  1909 
gives  for  the  proper  motion  of  62  Geminorum: 
o".22$  in  45?2 

This  is  in  substantial  agreement  with  the  values  found  from 
meridian  observations : 

As  a  further  test  of  any  motion  in  B  I  have  connected  a 
third  faint  star. 

B  and  C  (12.2) 

1909.821     267? 10  104*59 

.838     267.33  103.76 

.859     267.14  104.07 


A  mean  of  the  first  two  measures  compared  with  the  last  in- 
dicates a  smaller  proper  motion  of  25  Monocerotis  than  that 
given  from  meridian  observations. 

Measures  o!'o58  in  3O5?4 
Auwers  0.124  in  284.5 
Boss  0.073  in  284.4 

The  measures  should  be  repeated  later  on.  As  a  further 
check  on  the  motion,  I  have  measured  one  of  the  nearer  stars. 


Auwers  (Brad.) 

0:227    in    31  ?3 

Auwers   (F.  C.) 

0.238    in    34.5 

Paris 

0.248    in    34.7 

Boss 

0.236    in    39.1 

. 


1909.84 


267.19 


104.07 


itkcn  has  recently  discovered  a  close  companion  to 
principal  star: 


the 


1910.19 


n°4 

U  Geminorum 

R.  A.  7"  28"  32' 


2"8o 


2n 


(4-2. ..13-2) 
Decl.  +  27°  10' 


1911.104 

•  145 
.164 

1911.13- 


45°8 
45-9 
45-4 

45-7 


46'.'I3 
46.24 
45-94 
46.10 


1909.838 
.859 
•  933 


A  and  B  (13.0) 

26>?9 
266.4 
266.7 


28'?48 
28.22 
27.94 


1909.88 


267.0 


28.21 


a     75  Geminorum      (4.5...II.O) 
R.  A.  7"  35"  49'        Decl.  +  29°  10' 


1909.818 
.821 
-859 


3i6?37 
316.33 
316.57 


182.13 
182.09 


1909-83 


316.42 


182.17 


The  earlier  measures  are  much  too  discordant  in  distance 
to  be  made  use  of  at  this  time  in  finding  the  proper  motion  of 
the  large  star.  Evidently  the  mean  value  cannot  be  used. 
Further  measures,  after  a  suitable  time  interval,  should  be 
made. 


The 

1877.29 
1877-84 
1878.83 

proper 

3I5°48 
315.05 
315.25 

motion  of  75 

Auwers 
Paris 
Porter 
Boss 

178^40 
177.91 
179-57 

Geminorum 

0^230    in 
0.204    in 
0.234    in 
0.247    in 

in 
in 
in 

is  given: 
i65?2 
156.5 
165-4 
163.7 

Bl 
Bl 
Bl 

29 


Burnham:   Measures  of  Proper  Motion  Stars 


S  Geminorum     (Var.  ..ll.i) 
R.  A.  7"  35"  50'        Decl.  +  23°  44' 


1909.818 

09-933 
10.091 


I22?87 

122.73 
123.15 


70741 
70.72 
70.03 


1909.95  122.92  70.38 

The  principal  star,  DM  (23°)  1796,  is  variable.     For  com- 
parison we  have: 

1878.24  I2o!88  70^32  in  Bl 

1878.88  121.85  69.34  in 


Bl 


DM  (33°)  1587     (7.5. ..n.6) 
R.A.7'40m24'       Decl. +  33°  9' 


1908.769 

.785 
.788 


45-01 
45-30 
44-93 


44-42 

44-25 
44-68 


1908.78 


45-08 


44-45 


The  only  prior  measures  are  too  discordant  in  distance  for 
any  inference  as  to  real  change. 

1879.31  47?2l  44*29  in  Bl 

.83  46.78  43.34  in  Bl 


Oxford  (Z  26°)  22647     (n.o) 
R.  A.  7*  40™  44:93       Decl.  +  26°  57'  27^2 

This  star  is  identical  with  DM  (27°)  1477  (9.5).  The  place 
(for  1900)  is  from  an  astrographic  plate  taken  1908.08.  The 
Oxford  proper  motion  is : 

0*165    >n    2Oi?9 

A  and  B  (9.6.. .12.7) 
1910.777  295?35  45*26 

.856  294.47  44.97 

•933  295.00  44.98 


1910.86 


294.94 


45-07 


A  and  C(n.8) 

1910.777  i89?8s  55796 

.856  189.80  54.79 

•933  189.77  55-41 


1910.86 


189.81 


55-39 


A  and  DM  (27°)  1470 

1910.8      AR.  A.  —  59? 8     A  Decl.  +  35*9      0 
1900  60.0  36.2      A.  G.  — Oxf. 


Lalande  15219      (6. 2... 6. 7) 

R.A.7»42"i8'       Decl.  — 15°  43' 

A  and  C 
1909.167  3"?04  128^42 


.170 
.186 

1009.17 


310.75 
3II.Q5 

310.95 


128.96 
128.66 

ta8.68 


In  the  first  measures  the  distances  differ  as  much  as  1*3,  so 
the  close  agreement  with  the  present  result  is  rather  accidental. 
1864.22  3io?68  I28"?6  3n  Kn 

I  do  not  find  any  proper  motion  assigned  to  cither  of  these 
stars.  The  smaller  is  Lalande  15213.  Some  of  the  meridian 
positions  are  : 

1877  3io?7  12879  Cord.  G.  C. 

1895  311.1  129.0  A.  G.  Wash. 

I  have  measured  a  new  companion  to  the  principal  star  : 


1909.167 
.170 
.186 


A  and  B  (13.7) 
54°8 
54.4 

53-4 


10764 
10.38 
10.55 


1909.17 


54-2 


10.52 


Piazzi  VII.  215     (6. 5... 10. 7) 
R.  A.  7"  43m  19'        Decl.  +  33°  32' 


1909.821 

09-933 
10.093 


I45°88 
145.71 
145-98 


78702 
78.05 
77-93 


1909.95 


145-86 


78.00 


The  early  measures  are  discordant  in  distance.  Probably 
fixed. 

1878.90            145^65             78728  in  Bl 

1879-35            I45.50             77-14  m  Bl 


Oxford  (Z  26°)  22642     (10.9) 
R.  A.  7"  45"  14:33       Decl.  +  26°  52'  2177 

This  place  (for  1900)  is  from  a  plate  of  the  Oxford  Astro- 
graphic  Catalogue  taken  1908.08.    From  a  comparison  of  this 
with  an  earlier  photograph,  the  proper  motion  is  given : 
07184    in    I46?o 

There  are  no  catalogue  stars  near  enough  for  direct  com- 
parison with  the  micrometer. 

A  and  B  (9.9..  .10.9) 
1910.777  306? 58  182725 

-933  306.28  182.49 


1910.85 

306.43 

182.37 

1910.777 
.933 

A  and  C  (10.8) 
254°8a 
254.90 

192773 
191.20 

1910.85 

254-86 

191.96 

Lalande    15290      (8. 2... 13. 3) 
R.A.7b45m53'        Decl.  +  30°  58' 


1908.326 
.900 

.974 
1908.73 


4?8o 
4.20 
3-95 


67.96 
67-87 

67.65 


Burnham:   Measures  of  Proper  Motion  Stars 


No  other  measures.    This  star  has  a  large  proper  motion  : 
Stumpe          i"952    in     I57?4 
Porter           1-947    in     158.7 

Lalande  15394     (7.9...IO.I) 
R.  A.  7"  47™  55'        Decl.  +  19°  34' 

A  and  B 
1  907  .  788           255  ?  03             86"82 
.807           255.31             86.38 
•  845            255.40             86.36 

•ty*  Cancri     (7.O...IO.O) 
R.  A.  8"  2"  58'       Decl.  +  26°  12' 

1910.835              so?93             87"so 
.856              50.87              87.73 
•  931              50.85              87.54 

1910.87                50.88              87.59 

No  other  measures.    The  proper  motion  of  the  bright  star  is  : 
Auwers         o"o7o    in    23i?4 
Boss              0.089    in    244.8 

i()!  Cancri     (6.  1...  12.  5) 
R.A.8"3mi3'        Decl.  +  25°  52' 

A  and  B 
1910.835            293?5i              73^76 
•  856            293.30              73.92 
•931            293.55              73-43 

1907.81             255.25             86.52 

A  and  C  (10.4) 
1907.788              8s?30            I22"45 
.807              85.48            122.26 
.845              85.58            122.48 

1907.81                85.45             122.40 

A  and  a  (n.6) 
1907.807              36^63              36^75 
.845              36.60              36.84 

1910.87              293.45              73-70 

A  and  C  (n.o) 
1910.835            2ii?9i            ii7"66 
.856            210.93            117.48 
.931            211.76            116.88 

1907.82                36.61              36.80 

The  other  measures  are  : 
AB        1893.24        250?97         88:'o6        2n        Eng 
AC        1893.24          89.02        124.01        2n        Eng 

The  proper  motion  of  the  principal  star  from  the  measures 
of  both  companions  is  : 
o"497    in     I7o?4 

It  is  given  from  transits: 
Stumpe         o"4i6    in    164^9 
Porter           0.446    in     167.2 

There  are  no  other  measures  of  the  small  star  near  A. 

Oxford  (Z  26°)  23412     (10.1) 
R.  A.  8"  om  ss!78        Decl.  +  25°  49'  24^2 

From  the  Oxford  Astrographic  Catalogue;  place  for  1900 
from  plate  taken  1908.08.    This  is  the  9.2  m  star,  DM  (25°) 
1848.    The  Oxford  proper  motion  is  : 
0*203    in     I9O?3 

A  and  B  (9.2..  .12.2) 
1910.835              io?45             ii2:'82 
.856              10.75             112.81 
.931              11.51             112.96 

1910.87             211.53            II7-34 

No  other  measures.    The  proper  motion  is  : 
Auwers         0^364    in     I95?4 
Boss              0.363    in     192.9 

Piazzi  VII.  321     (7.o...ii.o) 
R.  A.  8"  4m  7*       Decl.  +  32°  50' 

A  and  B 
1907.807            320?77              53"27 
8.022            321.90              53-40 
8.063            321.25              53.48 

A  and  C  (10.4) 
1907.807              75°7O            225"2i 
8.022              75.70            225.37 
8.063              75.83            225.51 

We  have  the  following  measures  : 
AB        1857.26        280?  10          58''  04        in        O2 
1881.28        298.72          52.83        in        O2 
1907.96        321.31          53-38        3n        p 
AC        1850.72          83.95        193.04        2n        O2 
1857.26         82.73        197.00        in        O2 
1881.28         78.97        210.46        in        O2 
1907.96          75.74        225.36        3n        p- 

These  positions  give  the  motion  of  A: 
AB        R.  A.  —  0^469       Decl.  —  0^623 
AC                    0.461                     0.617 

1910.87                10.90            112.86 

A  and  DM  (25°)  1849  (9-  5) 
1910.835             I30?o8            254^9 
.856            129.67            254.95 
.931             129.98            255.65 

1910.87              129.91            255.13 
The  last  comparison  star  is  not  in  A.  G.    The  DM  places  give, 

—  n  /rfic                          n  f\*>(\ 

.     .  , 

131°  :  248".  While  this  is  only  roughly  approximate,  it  is  worthy 
of  note  that  the  proper  motion  of  A  would  change  the  angle, 
and  not  the  distance  sensibly. 


Hence  the  corrected  proper  motion  is : 
o"775    in    2i6?9 


Burnham:   Measures  of  Proper  Motion  Stars 


Meridian  positions  give : 

Porter  o''8u  in  2i6°.g 

Paris  0.814  in  213.2 

Kustner  0.807  in  217.0 

Boss  0.808  in  214.7 


Lalande  15976      (7. 5... 9.0) 

R.  A.  8"  6"  32'       Decl.  +  S7°28' 

A  and  B 
1907.791  i6i?28  131^83 


.810 
.964 

161.86 
161.88 

132.21 
132.37 

1907.85 

161.67 

132.14 

B  and  C  (ll.o) 

1907.810 

I52?6i 

100*39 

7.964 

152.62 

IOO.I2 

8.769 

152.60 

IOO.64 

8.785 

153.58 

IOO.4O 

1908.33 

152.85 

100.39 

It  is  not  probable  that  B  has  any  sensible  proper  motion. 

For  greater  certainty  hereafter,  I  have  connected  a  third  faint 

star.    The  measures  of  AB  are: 

1893.25  i64?37  134*28  2n  Eng 

1907.85  161.67  132.14  3n  P 

Combining  these  positions  with  that  in  A.  G.  Hels.  for  1871, 
to  give  a  longer  time  interval,  we  have  for  the  proper  motion 
of  the  large  star: 

0*432    in    23O?4 

Some  of  the  meridian  values  are: 

Stumpe         0*408    in  230?! 

Porter  0.394    i°  232.3 

Paris  0.359    in  227.6 


Bradley  1169     (7. 3... 9. 2) 
R.  A.  8"  7m  21       Decl.  +  59°  31' 

A  and  B 
1909.071  8?8o  96*32 


.091 
•  093 

8.97 
9-25 

95-88 
96.16 

1909.08 

9.01 

96.12 

A  and  C  (8.6) 

1909.071 
.091 
.093 

3o8?20 
308.23 
308.42 

223*96 
223.78 
223-54 

1909.08 

308.28 

223.76 

A  and  D  (9.2) 

1909.071 
.091 
.093 

63°30 
63-50 
63.18 

236*74 
236.63 
236.33 

We  have  the  following  earlier  measures  of  B  and  C : 
AB        1851.27  8?  50         95^02        in        O2 

1879.81  8.75          95.68        in        Doub. 

AC        1851.27        308.37        222.41        in        O2 

1879.81        308.25        223.00        in        Doub. 

These  measures  give  for  the  annual  movement  of  the  prin- 
cipal star : 

AB        R.  A.  —  0*017       Decl. — 0^015 
AC  0.020  0.013 


0.018 


0.014 


The  value  derived  from  meridian  positions  seems  to  be  too 
large : 

Measures  0^023  in  232?! 
Auwers  0.045  in  228.5 
Boss  0.038  in  165.0 

The  distances  in  the  early  measures  .of  AD  are  inconsistent 
with  each  other,  and  with  the  later  results.  Unfortunately  the 
Pulkowa  positions  depend  upon  a  single  night,  and  therefore 
may  have  some  accidental  error.  The  meridian  positions  arc 
still  more  uncertain.  The  several  values  of  the  relation  of 
these  stars  are  as  follows : 


A  and  D 

1842. 

62?3 

236*5 

O.  Arg.  N. 

1851.27 

62.81 

234-98 

in          OS 

1873- 

63.1 

238.0 

A.  G.  Hcls. 

1879.81 

63.00 

234-88 

in          Doub. 

1908.08 

63-33 

236.57 

3n          P 

It  is  evident  that  no  use  can  be  made  of  these  positions  for 
getting  the  relative  motion.  They  are  too  inconsistent  to 
warrant  the  selection  of  one  or  more  of  them  at  this  time,  and 
the  rejection  of  the  others.  It  may  be  that  the  small  star  has 
some  proper  motion  of  its  own.  Measures  in  the  future  will 
settle  this  question. 

With  this  in  view  I  have  connected  it  with  two  small  stars  : 

D  and  E  (9.7) 


1909.109 

I07?oo 

156*02 

.112 

108.27 

155-75 

.128 

108.03 

155-64 

I909.II 

108.07 

155-80 

D  and  F  (11.2) 

I909.II2 

i66?47 

173*23 

.128 

166.20 

172.88 

1909.12 


166.33 


173.05 


1909.08 


63-33 


236.57 


The  three  comparison  stars  B,  C,  and  D  are  respectively  DM 
(59°)  "53.  US2,  and  1155.  The  magnitudes  given  are  those 
of  the  DM. 


Oxford  (Z 26°)  24255     (9.6) 
R.  A.  8'  16™  24:71        Decl.  +  26°  57'  12*8 

From  the  Oxford  Astrographic  Catalogue;  plate  taken 
1908.19.  Place  for  1900.  From  this  and  an  earlier  exposure, 
the  proper  motion  is  given : 

0*164    in     I92?7 

This  is  identical  with  the  8.8  m  star,  DM  (27°)  1598. 


Burnham:   Measures  of  Proper  Motion  Stars 


A  and  B 

(12.4) 

&  Hydros     (4-4...IO 

6) 

igii 

164 
2OO 

219.85 

46T52 
45.89 

R. 

A.  8"  31™ 

18'        Decl.  - 

f\° 

7' 

1911 

18 

219 

87 

46 

20 

1909 

-093 

3I2?22 

243 

"77 

.170 

3".94 

243 

•50 

.186 

3H.98 

243 

•56 

Oxford 

(Z  26°) 

24256 

(9.8) 

1909 

.15 

312.05 

243 

.61 

R.  A.  8"  i6m  so!66       Decl.  +  27°  o'  I7?o 

This  is  closely  following  the  last  star,  and  is  the  9. 4m  star 
DM  (27°)  1600.     Place  for  1900.    The  Oxford  proper  motion 


A  and  B  (13.0) 
1911.164  226?3 


30^75 


1908.  18 
1911.14 


Oxford  24255  and  24256 
A  R.  A.  +  25!  95       A  Decl.  +  184^2 
25.97  183-7 


Oxf. 


Oxford  (Z  26°)  23968     (11.3) 
R.  A.  8"  17™  24?59        Decl.  +  25°  28'  36% 

The  place  for  1900  is  from  an  astrographic  plate  taken 
1908.19.  From  a  comparison  of  this  with  an  earlier  photo- 
graph, the  proper  motion  is  found : 

o"26o    in     i8o?o 

This  is  identical  with  the  9.1  m  star,  DM  (25°)  1910. 

A  and  B  (9.5.. .11.5) 
1910.142  I74°23  146*05 


Lalande  16494     (7. 5...  9. 5) 

R.  A.  8"  i8m  26'       Decl.  —  o°  45' 


1907.845 
7.865 

8.022 

44-75 
44-58 
44.80 

154.10 
153.85 

res  are: 

45°52 

I53''2S 

2n 

44-71 

153-93 

3n 

1891.21  45°52  153*28  2n  Eng 

1907.91 

These  positions  give  for  the  proper  motion  of  A : 
0*132    in     152^4 

This  is  considerably  smaller  than  that  given  from  meridian 
positions : 

Stumpe         0*271    in     I47?2 
Porter  0.220    in     149.7 

A.  G.Nico.     0.235    in     151.4 

As  it  is  very  improbable  that  B  has  a  proper  motion  of  more 
than  0*1,  I  have  measured  a  third  very  faint  star. 

B  and  C  (13.2) 

1907.865  I2?I7  65*48 

8.022  14.00  66.59 

8.102  13.53  66.69 


The  small  star  is  DM  (6°)  1997  (9.3).    The  only  other  posi- 
tion of  this  depends  upon  a  single  measure: 

1879-25  3"°S  243^88  in  p" 

The  proper  motion  of  the  large  star  is  given  from  meridian 
observations : 

Auwers  o"o97  in  269?! 
Newcomb  0.072  in  258.6 
Boss  0.074  in  261.5 


39  and  40  Cancri     (6.7. .  .6.9) 

R.  A.  8"  33™  12'       Decl.  +  20°  26' 

A  and  B 


1907.845 

8.000 

8.022 

151.05 
151.23 

149*61 

149-53 
149.42 

1907.95 

151.14 

149-55 

A  and  a  (9.1) 

1907.845 

8.000 

8.022 

309°os 
309.48 
309.23 

i33"6i 
I34-30 
134-19 

1907.95 

309-25 

134-03 

A  and  b  (9.0) 

1907.845 

8.000 

8.022 

no°68 
110.47 
110.90 

134-91 
I35-I9 

1907.95 

110.68 

135-n 

B  and  c  (10.8) 
1907.845  H7°82 

8.000  147-33 

8.022  147.72 


139.21 
139-57 


I907.95 


147-62 


I39-36 


1908.00 


13-23 


66.25 


Some  of  the  recent  positions  of  the  large  stars,  including  all 
the  direct  measures  are : 

1881.4          I5i°4          I5o''i  A.G.Berlin 

1887.27        151-25        149-75        2n        Eng 
1894.2          151.2          150.3  Greenwich 

1007-95        I5I-I4        149-55        3n        P 

It  is  evident  from  these  positions  that  the  relative  change,  if 
any,  is  less  than  the  usual  errors  of  the  observations. 
The  proper  motion  from  transit  positions  are  given : 

39  Cancri       o".io7    in    279?7        Auwers 

0.041    in    247.0        Hedrick 
0.044    in    239.9        Boss 

40  Cancri       0.065    in    291.7        Auwers 

0.020    in    261.7        Hedrick 
0.037    in    242.3        Boss 


33 


Burnham:   Measures  of  Proper  Motion  Stars 


For  the  small  stars  near 

A  we  have  : 

B  and  b  (13.5) 

A  and  a 

1907.865 

101^67 

95''o3 

1887.27 
1894.23 

309^ 
309. 

13 

15 

134 
!34 

"17           2n 
.10           2n 

Eng 
Eng" 

8.249 
8.291 

101.72 
102.65 

94-22 

94-49 

1907-95 

309- 

25 

134 

•03           3n 

P 

1908.13 

102.  or 

94.58 

A  and  b 

The  measures  of  AB  are  : 

1887.27 

no? 

SO 

135 

:o3           2n 

Eng                         1888.27 

65^ 

77 

102:96 

2n 

Eng 

1804-23 

no. 

so 

134 

.92           2n 

Eng 

1894.23 

65- 

83 

103.56 

2n 

Eng 

1907.95 

no. 

OB 

135 

.11           3n 

P 

1907.97 

66. 

04 

104.66 

4" 

P 

Obviously  there  is  no  certain  change.  It  is  somewhat  remark- 
able that  these  small  and  distant  stars  should  have  the  same 
movement  as  the  large  star  if  the  motion  of  that  is  large 
enough  to  be  approximately  determined  in  the  time  interval. 
Later  measures  will  show  this,  and  the  relative  motion  of  AB. 
There  are  no  other  measures  of  the  small  star  near  B. 


Lalande  17046     (8.1. ..9. 5) 
R.  A.  8"  33™  17'       Dec!. +  11  "58' 

A  and  B 
1907.769  323°70  135:71 


.807 

.810 

323 
323 

•91 
-63 

135-47 

1.15-23 

1907.79 

323 

•75 

135-47 

B  and  C 

(».  0 

1907.769 

.807 

.810 

12 

13 
13 

°77 
•23 
•36 

30:43 
30.30 
30.37 

1907.79 


13.12 


30.37 

No  other  measures  of  C.    B  is  DM  (12°)  1887.    The  prior 
measures  are: 

1891.22     321 ?os     130:20 


211 


1907.79 


323.75 


135.37 


Eng 
P 


The  change  in  the  proper  motion  is  small : 
Measures     0:490    in    I92?8 
Stumpe         0.542    in     198.0 
Porter  0.511     in     198.2 

Paris  0.502    in     180.0 


Y  Cancri     (5.0..  .9.2) 

R.  A.  8"  36m  20'        Decl.  +  21 "  54' 

A  and  B 


1007.845 

66?02 

104:51 

7.865 

65.93 

104.33 

8.022 

66.25 

105.03 

8.159 

66.05 

104.78 

1907.97 

66.04 

104.66 

A  and  a  (13.0) 

1907.865 

257°23 

103:20 

8.022 

257-70 

J03-97 

8.063 

257-75 

102.70 

8.159 

257-55 

103.16 

1908.03 

257.56 

103.26 

A  mean  of  the  first  two  compared  with  the  last  gives  for  the 
proper  motion  of  the  large  star: 

07087    in    262?7 

The  meridian  observations  give  a  larger  motion : 
Auwers         o"l25    in    254^8 
Paris  0.115    in    252.8 

Newcomb     0.108    in    246.3 
Boss  0.113    in    243.8 

It  is  practically  certain  that  B  has  no  sensible  motion.  To 
show  this  independently  I  have  measured  very  small  stars  from 
both  A  and  B. 


S  Cancri 

(Var.. 

.10.8) 

R.A.8"37m5 

•       Decl 

.  +  19"  28' 

1908.974 
9.109 
9.128 

269.60 
269.53 

74:65 
75-iS 
75.i8 

1909.07 

269.72 

75.00 

The  principal  star  is  not  known  to  have  any  proper  motion. 

The  difference  in  the  measures  is  probably  accounted  for  by 

errors  of  observation. 

1878.32  209?27  76:16  in  BI 

1879.86  268.59  77.04  in  Bl 


Piazzi  VIII.  174     (8.0... 9.3) 
R.  A.  8"  43ra  45'        Decl.  +  48°  i' 

A  and  B 
1907.810  321 ?ss 


8.291 

8.326 


321.55 
321.85 


164:02 
164.64 
164.46 


1908.14     321.65 

A  and  C  (9.4) 
1907.810     28o?28 
8.291     280.48 
8.326     280.40 


164-37 


221.79 
221.62 


1908.14 


1008.291 
1908.14 


280.39 
B  and  C 

232.54 


221.65 


146:38 
146.20 


The  second  position  of  BC  is  computed  from  the  measures 
of  AB  and  AC.  B  and  C  are  respectively  DM  (48°)  1692  and 
1691. 


34 


Burnham:   Measures  of  Proper  Motion  Stars 


1873.2 

320?8 

I55"9 

A.  G.  Bonn 

1893-24 

321.38 

161.77 

2n 

Eng 

1908.14 

321.65 

164-37 

3n 

P 

1893.24 

279.68 

220.43 

2n 

Eng 

1908.14 

280.39 

221.65 

3" 

P 

With  prior  positions  we  have: 
AB 


AC 


The  measures  give  for  the  proper  motion  of  the  large  star : 
AB        R.  A.  +  o7o6S        Decl.  —  o'fi68 
AC  0.049  0.192 

0.058  0.180 

Therefore  the  proper  motion  of  A  is : 
0^189    in     162?! 

The  meridian  observations  give  a  larger  value : 
Stumpe         o"2SO    in     I75?6 
Paris  0.264    in     180.0 

Porter  0.226    in     180.0 

There  is  certainly  some  motion  in  R.  A.    Combining  the  A.  G. 
Bonn  position  with  the  measures  of  AB  gives: 
0^234    in     iss?3 


DM  (20°)  2243     (9.0... 11.2) 
R.  A.  8"  49™  49"       Decl.  +  20°  19' 


1908.769 
.898 
•  974 


2S3°88 
254.10 
254.20 


140*92 
140.99 

140.78 


140.90 


1908.88  254.06 

The  principal  star  is  red  and  variable.    The  only  other  posi- 
tion is: 

1878.61  254?os  141778  2n  Bl 


10  Ursae  Major!*     (4.2. .  .9.6) 
R.A.8"52m5i'        Decl.  +  42°  15' 

A  and  B 

1907.788  200?22  I3o7o6 

200.30  129.77 

129.84 


8.000 
8.022 


200.40 


A  and  C  (10.5) 
1908.022  io8?oo 

.063  109.00 

1  he  following  are  all  the  measures : 
A  and  B 


222.97 


1851.76 

206?32 

150733 

2n 

O2 

1881.29 

203.48 

139-64 

in 

02 

1884.36 

203  .  40 

138.63 

2n 

HX 

1888.27 

202.48 

136.46 

2n 

Eng 

1907.94 

200.31 

129.89 

3" 

P 

A 

and  C 

1851.18 

«4?3S 

204765 

in 

02 

1881.29 

111.07 

214.96 

in 

O2 

1908.04 

108.95 

223.16 

2n 

P 

From  these  positions  the  corrected  proper  motion  of  the 
large  star  is : 

AB        R.  A.  —  07384        Decl.  —  07231 
AC  0.434  0.210 

0.409  0.221 

This  movement  is  therefore: 

07465    in    24i?6 
The  motion  from  transits  is  too  large: 

Auwers  0*515    in  239?8 

Groombridge      0.510    in  245.1 

Paris  0.512    in  237.6 

Newcomb  0.502    in  239.0 

Boss  0.504    in  238.8 

I  have  measured  another  star  from  A : 

A  and  a  (10.8) 

1908.000  H9°3S  141787 

.022  119.93  142.09 

.063  II9-93  141-65 

1908.03  H9.74  141.87 

The  only  other  position  of  this  is  from  the  Astrographic 
Catalogue: 

1893.30  I2i?7  140704  Donner 


75  Cancri     (6.2. .  .9.3) 
R.  A.  9"  I™  43'        Decl.  +  27°  7' 

A  and  B 
1907.807  39?83  iio78f 


8.022 
8.025 


39-93 
39-92 


110.88 
110.85 


02 
02 

Doubiago 
Eng 


I907-95  39.89  110.86 

B  and  C  (10.5) 

1907.807  337°96  128766 

8.022  338.20  129.31 

8.025  338.17  128.57 

1907-95  338.li  128.85 
The  prior  measures  of  B  are : 

1851.73           43?25  92760  2n 

1861.27           42.60  95-86  in 

1879.18           41.12  101.60  3n 

1887.38           40.97  104.29  2n 

1907.95           39.89  110.86  3n            P 

From  these  positions  the  proper  motion  of  75  Cancri  is : 
07341    in    203?3 

This  has  been  given  from  meridian  observations : 
Auwers         07402    in    2Oo".o 
Porter  0.398    in    200.0 

Boss  0.404    in     196.7 

As  evidence  of  the  fixity  in  space  of  B,  I  have  measured  a 
third  star.  The  small  star  B  is  DM  (27°)  1716.  My  later 
measures  are : 

1911.222  39^83  111789 

.260  39-42  112. 21 


1911.24 


39.62 


112.05 


35 


Burnham:   Measures  of  Proper  Motion  Stars 


80  Concn'      (6.  $...9. 

I) 

Bradley 

1300     (6.  2.  ..9.  7) 

R.  A.  9-5-  13 

Decl.  + 

18°  32' 

R.  A.  9"  8m 

12"        Decl.  +  35°  8' 

1908.862 

252  ?02 

133*33 

1911.947 

26i?97             152^64 

.882 

251.82 

133.08 

12.066 

261.73            152.49 

•974 

252.08 

132.93 

1912.00 

261.85             152.56 

1908.90 

251.97 

133-11 

No  other  measures.    The  proper  motion  of  Bradley  1300  is  : 

For  comparison  we  have: 

Auwers 

o"i62    in    290^2 

1870.5 

2Si°3 

133*7 

A.  G.  Ber. 

Boss 

0.149    in    283.2 

1882.34 

2SI-9S 

I34'62 

in           O2 

1908.  90 

25I-97 

133-11 

3n           P 

There  is  evidently  considerable  error  in  the  meridian  posi- 
tions if  the  micrometer  measures  are  substantially  correct. 
The  latter  give  for  the  apparent  motion  of  80  Cancri: 

0:057    in    250^7 

The  proper  motion  of  the  large  star  is  given: 
Auwers         0*076    in    264?o 
Boss  0.045    in    228.7 

I  have  measured  the  third  star  from  B.  These  stars  are 
DM  (18°)  2137  and  2136,  the  latter  9. 6m. 

B  and  C 


DM  (23°)  2063     (7.  5...  9.0) 
R.  A.  9"  8m  15"        Decl.  +  23°  53' 


A  and  C 

1908.785 

82?87 

6o"38 

.882 

82.40 

60.23 

•  974 

82.63 

60.49 

1909.071 

.112 
.164 

3I7-I7 
317.07 

148^6 
147-79 
148.47 

1909.11 

3I7-I4 

148.21 

Ji1    81  Cancri     (6. 5... 13. 3) 
R.A.9b5m43<       Decl.  +  15°  29' 

A  and  B 
1907.845  ii8?os  35:30 


8.022 
8.102 


119.10 
117.97 


35-26 
35.67 


1907.99 


118.37 


35-41 


A  and  C  (9.5) 

1907.845       229?25  222*10 

8.000  229.20  222.67 

8.022  228.97  222.41 


1908.88  82.63  60.37 

The  prior  measures  give: 

1841.23  87?so  5i"i9  m 
1881.26             83.95  56.58  in 

1881.24  84.40  56.63  3n 
1908.88             82.63  60.37  3n 


O2 
02 

Doul). 


From  these  positions  we  have  for  the  proper  motion  of  the 
large  star  : 

o?iS3    in    237?5 

The  value  derived  from  meridian  observations  appears  to 
be  too  large. 

Porter          0*204    in    224?8 
A.  G.  Bcr.    0.194    in    223.9 

It  is  not  likely  that  the  small  star  has  any  sensible  movement. 
To  be  certain  of  this  hereafter,  I  have  connected  a  faint  star: 


1908.785 

8.974 
9.071 


A  and  B  (10.7) 
i69?93 
170-75 
170.83 


1908.94 


170.50 


59"75 
59-70 
59.98 

59-8i 


1907.96 


229.14 


222.39 


No  other  measures  of  B.    C  is  DM  (15°)  2001.    Of  this 
have  the  following  measures : 


1855.25 

235°58 

237*11 

in 

O2 

1870.28 

233-68 

232.58 

in 

O2 

1882.34 

232.23 

228.06 

in 

O2 

1907.96 

229.14 

222.39 

3" 

P 

40  Lyncit     (3.  4...  8.  6) 
R.  A.  9"  13™  44'        Decl.  +  34°  54' 

A  and  B 
1908.060  37°35  210735 

.082  37.O9 

.159  37.18 


210.10 

210.30 


From  which  the  proper  motion  of  A  is : 
0*563    in    202?4 

The  meridian  positions  give: 

Auwers        o"6o6  in  294?3 

Hedrick        0.573  in  295.1 

Boss  0.575  in  294.1 


1908.10 


37.21 


210.25 


B  and  C  (=21342) 

1908.060  32i?9  l6:'8s 

.082  321.0  16.86 

.159  321.1  17.02 


1908.10 


321-3 


16.91 


Burnham:   Measures  of  Proper  Motion  Stars 


have  the  following  micrometer  positions  of  AB  : 

Therefore  the  proper  motion  of  the  large  star  in  declination 

1851.18 
1861.27 
1870.30 
1881.29 
1886.34 

33°73 
34-57 
34-97 
35-65 
36.05 

204"  i  5 
205.32 
205.92 
207.62 
208.05 

in 
in 
in 
in 
an 

O2 
O2 
OS 
O2 

Eng 

is: 
Measures 
Porter 
Auwers 
Boss 

0.427 
0.432 
0.441 

1908.10 

37-21 

210.25 

3n 

P 

These  positions  give  for  the  most  probable  motion  of  A:  . 
0*244    in    279?! 

The  measures  of  BC  given  above  when  compared  with  Struve 
..i  1830,  show  a  slow  relative  motion  which  is  undoubtedly  real. 
As  the  smaller  component  of  2  1342  is  only  n  m,  it  is  safe  to 
assume  that  the  proper  motion  is  in  the  other  star.  This 
motion  is  therefore: 

o"o25    in    24?o 

Applying  this  correction  to  the  apparent  motion  of  40  Lyncis, 
ve  have  for  the  real  proper  motion  of  that  star: 
0^238    in    28s?o 

From  meridian  observations  this  has  been  given : 


Stumpe  0*250 
Auwers  0.239 
Newcomb  0.219 


in  276?7 
in  276.3 
in  273.1 


Boss 


0.217    in 


272.6 


i|>  Leonis     (5.6.  ..10.9) 
R.  A.  9"  37™  12'        Decl.  +  14°  34' 


1909.071 

.112 
.186 

I37°97 
138.13 
138.08 

281^76 
282.08 
281.71 

1909.12 

138.06 

281.85 

1  single  distances.     The  only  other  measure  is  the  fol- 
lowing : 

1880.17  139^63  28o"26  3n  p" 

The  distance  between  the  two  stars  is  too  large  for  the  most 
accurate  measures  with  the  micrometer.  These  observations 
imply  a  larger  proper  motion  of  the  large  star  than  that  found 
by  meridian  positions. 

Auwers  o"oi3  in  261^3 
Newcomb  0.030  in  252.2 
Boss  0.014  m  I9I-7 


20  Leonis  Min     (5.6. .  .8.8) 
R.  A.  9"  54™  6*        Decl.  +  32°  31' 

There  is  no  comparison  star  near  enough  for  direct  measure- 
ment with  the  micrometer.    Otto  Struve  compared  it  in  R.  A. 
and  Decl.  with  DM  (52°)  1968,  which  is  about  33'  following. 
The  several  results  are : 

1852.19       A  Decl.  —  3i'fg2        in       O2 
1873.27  —23.96        in        O2 

1909.16  —  9.24        3n        f3 


Lalande  19627      (8.8.  ..9.4) 
R.  A.9h59m9'        Decl. +  69°  2' 


1907.810 
8.079 
8.082 


255.25 
255-33 
255.25 


183.27 
183.08 


Eng 


1907.99  255.28  183.20 

The  only  other  measures  are : 

1893.25  255^33  i86'/78  2n 

Giving  for  the  motion  of  A : 

0*243    in    257?9 

As  these  stars  differ  but  little  in  brightness,  it  is  uncertain 
whether  or  not  the  motion  is  all  in  the  larger. 
The  results  from  meridian  positions  are  discordant. 

Stumpe         o"4ii     in    2ig?5 

Porter  0.303    in    237.0 

To  determine  hereafter  whether  there  is  any  motion  in  B,  I 
have  connected  a  third  star : 

B  and  C  (12.0) 

1912.066  325^40  I98"o9 

.162  325-50  198.16 

.164  32S-I3  197.49 


1912.13  325.34 

A  and  B  are  DM  (69°)  558  and  557. 


197.91 


Groombridge  1618     (6. 7... 8. 8) 
R.A.  lo"4mot        Decl. +  50°  4' 

1908.025  I9i?58  172^41 

.102  191-23  172.37 

.118  191.38  172.09 

The  only  measured  positions  are: 

1894.37  io6?45  183^27  2n  Eng 

1908.08  191.40  172.29  3n  p 

From  these  positions  the  proper  motion  of  A  is  : 
i?393    in    248?g 

This  motion  is  larger  by  the  meridian  observations : 
Groombridge       i"45o    in    249^2 
Porter  1-447    m    249.8 

Kustner  1-459    m    249.4 

The  smaller  star  is  DM  (50°)  1724.  Comparing  this  with 
(50°)  1723,  a  star  9.3  m,  seems  to  show  that  the  former  has  no 
sensible  motion,  and  that  the  motion  of  the  large  star,  as  given 
by  the  measures  is  correct,  if  there  is  no  unusual  error  in  the 
micrometer  measures. 

1724  and  1723 

1908.12          254?o         3°3"6s          m          P 
I877-3  254.0         303.4  A.  G.  Harv. 


37 


Burnham:   Measures  of  Proper  Motion  Stars 


Oxford  (Z  26°)  28107     (7.2) 
R.  A.  10"  1 1 "'  19: 16       Decl.  +  26°  2 1 '  59:6 

This  is  the  7.5  m  star,  DM  (26°)  2065,  with  the  photographic 
place  for  1900.    The  Oxford  proper  motion  is: 
0^305    in     154?! 

There  is  no  available  comparison  star  for  the  micrometer. 

A  and  DM  (26°)  2662 
1910.93       AR.  A.  — 62:70       A  Decl.  — 127711 

A  comparison  of  this  with  the  A.  G.  positions  of  1875  indi- 
cates a  proper  motion  in  A  of  07243  in  I5i?7. 

Groombridge  1636     (6. 5... 8. 8) 
R.  A.  10"  1 1™  33'        Decl.  +  44°  39' 

1908.025  103^75  151*07 

•057  103-75  150.84 

.118  103.93  150.84 

The  micrometer  positions  are: 

1893.30  IO5?oo  I52?36  2n  Eng 

1008.07  103.81  150.92  3n  p" 

B  is  DM  (44°)  1975.     The  measures  give  for  the  proper 
motion  of  the  large  star : 

07234    in    I9o?2 

This  is  considerably  smaller  than  the  transit  values,  but  if 
the  measures  are  combined  with  the  positions  in  A.  G.  Bonn 
for  1881,  the  proper  motion  would  be  still  less. 
The  prior  values  are : 

Stumpe  0^314    in     I73?8 

Groombridge       0.304    in     165.0 
Porter  0.295    in     174.6 

Paris  0.328    in     166.5 

Boss  0.310    in     169.1 


DM  (20°)  2465  and  2464     (9.0.  ..9.4) 
R.  A.  10"  13™  6'        Decl.  +  20°  28' 


1007.845 
8.022 
8.025 


333-03 
333.05 


99707 
99.18 
99.04 


1907.96 


332-99 


99.10 


The  measures  in  this  case,  covering  more  than  half  a  century, 
should  give  a  very  accurate  value  of  the  relative  motion. 

1856.77  32'°32  ui7S2  2n  O2 
1869.82  323.80           108.01            2n  O2 

1879.78  326.25  105.53  2n  O2 
1893.23  329-39            101.50           2n  Eng 
1007.96  33-'.  99             99-10           3n            P 

These  positions  give  for  the  proper  motion  of  A : 
07488    in    z67?s 

This  is  near  y  Leonis.  The  proper  motion  from  meridian 
observations  is : 

Stumpe  0^534    in    27o?3 

Porlir  0.495    in    269.1 


LaUnde  20155     (8. 5... 8. 7) 
R.  A.  io*  17™  32'       Decl.  +  3°  14' 


1907.997 
8.000 
8.022 


A  and  B 
25!  18 
24.70 
24.63 


100773 

101.01 

101.32 


1908.01  24.84  IOI.02 

A  and  C  (10.3) 

1907-997  H5?45  167777 

8.000  145.25  167.13 

8.022  145.35  167.70 

1908.01  145-35  i67-53 

B  is  DM  (3°)  2357.    The  motion  of  A  is  determined  from  the 
following  transit  and  micrometer  positions: 

1842.3  24?2  827i2  Lament 

1880.5  25.9  92.60  A.  G.  Alb. 

1891.22          24.99  96.47          3n          Eng 

1908.01          24.84          101.02          3n          (5 

Therefore  the  apparent  motion  of  L  20155  is : 
07289    in    2O7?9 

Some  of  the  meridian  values  are: 

Stumpe         07278    in  2o8?6 

Porter          0.200    in  211.1 

Boss  0.283    in  212. o 

There  are  no  other  measures  of  the  third  star. 

Oxford  (Z  26°)  28528     (9.4) 
R.  A.  10"  22m  46:27        Decl.  +  25°  24' 37 1 

This  is  the  8.8  m  star,  DM  (25°)  2255.    The  place  from  an 
astrographic  plate  taken  1908.25  is  for  1000.    From  a  compari- 
son with  a  prior  photograph,  the  proper  motion  is  given : 
07136    in    28o?6 

A  and  B  (9.0.. .11.5) 

1911.142  226?6o            207740 

.164  226.50            206.72 

.184  226.65            207.23 


1911.16 


226.58 


207.12 


DM  (32")  2066     (6.5... 10.5} 
R.  A.  10"  35™  28'        Decl.  +  32°  19' 

1909.109  I73°6o  H77i9 

.170  173.48  116.97 

.186  173-55  117.08 

•933  173-26  116.60 

•936  173.42  116.26 

1909.47  173.46  116.82 

The  only  other  measure  of  this  is  the  following: 

1879.60  I72?o8  119711  2n  Bl 

If  the  measures  are  correct,  the  principal  star  should  have 
proper  motion  of 

07078    in     144° 

The  only  value  from  meridian  positions  is : 
Boss         07030    in     180° 


Burnham:   Measures  of  Proper  Motion  Stars 


Groombridge  1697      (6 

o...9.o) 

That  the  large  stars  have  the  same  proper  motion  will 

be 

R.  A.  io"45m  16*        Decl. 

+  70°  30' 

apparent  from  the  following  positions  : 
1810             246^4          I34''2                    Groombridge 

A  and  B 

1893-36        247.27        134-95        2n        Eng 

1908.022              S2?oo 

I74"7° 

1895.29        247.2          135.06                   Donner 

.025              52.12 

175-15 

1908.07        247.19        135-16        3"        3 

.044.              52.00 

175-27 

I  have  therefore  measured  a  third  star.    The  proper  motions 

.102                    52.00 

175-14 

are  given  : 

1008.05                      52.03 

175-06 

A  =  0^285    in    20t)?2        Groombridge 

B  and  6  (12.8) 

0.279    m    214.2        Porter 

1908.022           223?  17 

59"39 

6  =  0.276    in    212.4        Groombridge 
O.2&1    in    212.4        Porter 

.102           222.90 

59-83 

1908.06             223.03 

59.61 

i  other  measures  of  the  faint  star.    We  have  the  following 
B  for  comparison : 

1842  46^6          152^2  O.  Arg.  N. 

1894.53        51-15        170-09        2n        Eng 

1908.05        52.03        175-06        4n        P 

The  direct  measures  give  for  the  proper  motion  of  A: 
o"4i8    in    259?o 

Or  with  the  meridian  position: 

o?4i6    in    263?5 

The  first  is  probably  the  best,  notwithstanding  the  longer 
interval  in  the  other. 

This,  from  meridian  observations  only,  has  been  given : 
Stumpe  o"455    in    255?2 

Porter  0.428    in    259.4 

Kustner  0.423    in    260.3 

Groombridge       0.399    in    258.6 
Boss  0.403    in    259.8 


DM  (1°)  2495     (6. 9. ..12. 7) 
R.  A.  10"  46"  4'        Decl. +  1°  43' 


Oxford  (Z  26°)  30038     (10.9) 
R.  A.  ii''iimi3!4i        Decl.  +  27°  o' 23':6 

The  place  for  1900  is  from  a  plate  taken  1908.25,  which,  com- 
pared with  an  earlier  exposure,  gives  a  proper  motion  of: 

o"i20    in    3ii!8 

There    is    no   near   star    for    direct    comparison    with    the 
micrometer. 

A  and  DM  (27°)  2000    (8.3) 

1911.14       AR.  A.  —  73!  7       ADecl.  — 42"o       P 

1900  73.6  41.6       Ox. — A.  G. 


Anon     (9. 7... 9. 7) 
R.  A.  n1122m  18"        Decl. +  8°  19' 

The  large  proper  motion  of  this  faint  star  was  detected  by 
Dr.  Max  Wolf  (A.  N.  4101)  by  the  change  shown  on  photo- 
graphic plates  made  in  1892  and  1906.  My  early  measures  have 
been  previously  given  (Mon.  Not.  LXVIII,  521)  and  compared 
with  rough  places  obtained  by  measuring  photographic  paper 


1912.255            27i?o8              39^53 

prints. 

.274            271.40              39.27 

The  micrometrical  measures  are  : 

.312            271.13              38.89 

1912.28              271.20              39.23 

A  and  B 

1906.906 

252?: 

8  1  "63 

In  the  first  instance  this  was  taken  for  55  Leonis.    I  do  not 

7.006 

252.0 

81.68 

find  any  proper  motion  assigned  to  the  large  star  from  meridian 

7.102 

252.1 

81.42 

positions. 

7.120 

252.2 

81.44 

1908.118 

253.23 

80.92 

Groombridge   1745  and   1744     (7.  2...  8.  5) 

.156 
•  159 

253.10 
253.08 

81.11 
80.68 

R.  A.  1  1"  5m  9'        Decl.  +  43°  29' 

.192 

253.00 

80.82 

A  and  B 

1909.071 

253-87 

80.13 

1908.025            247^18            I35"2i 

.112 

253-63 

80.50 

.057            247.08            135-32 

.148 

253-80 

80.24 

.118            247.30            134-96 

.164 

253.94 

80.15 

1908.07              247.19            135.16 

I9IO.O9I 

254.78 

80.05 

•  093 

254-35 

79-87 

B  and  b  (12.5) 

.107 

254.51 

79.84 

1908.  159            336^38            I32:'64 
•266            335.92            132-29 

1910.931 
11.107 

255.28 
255.21 

79-02 

79.08 

1908.21              336.15             132.46 

11.164 

255.50 

/  y  '  "" 

79.09 

39 


Burnhant:   Measures  of  Proper  Motion  Stars 


The  several  mean  results  are  as  follows  : 
1892.23           242?!             91747                          Wolf 
1907.03           252.10           81.54           411            P 
1908.15           253.10           80.88           411            P 
1909.12           253.81           80.25           4n            P 
1910.10           254.55           79-92           3n            P 
1911.07           255.33           79.06           3n           P 

The  proper  motion  of  A  from  all  these  measures  is: 
1  7228    in    igo?4 

Further  measures  will  reduce  the  error  in  this  value. 
To  make  it  certain  that  B  has  no  proper  motion,  I  have  con- 
nected it  with  a  12  m  star  : 

BandC 
1906.906           275?9             155:17 
7.102           275.5              I54-48 
7.120           275.7             154.17 

1908.118           275.90            154-90 
.159           275-85            154-70 
.192           275.67            154.50 

It  is  obvious  that  B  has  no  sensible  proper  motion  : 
1892.23           275?9           154794                        Wolf 
1907.04           275-7            I54-6I            3n            P 
1908.15           275.8           154-70           3n            P 

61  Urtae  Maj     ($.3.  .  .11.2) 
R.  A.  nh  34™  44'        Decl.  +  34°  53' 

1907.271             loo?55             159*39 
.331             100.58            159.17 

Therefore  the  corrected  proper  motion  of  the  large  star  is  : 
Measures      07381     in    287^5 
Auwers         0.359    in    274.3 
Porter           0.365    in    273.6 
Boss              0.347    in    271.8 

P  Virgin!*     (4.O...IO.8) 
R.  A.  1  1"  44m  25'       Decl.  +  2°  26' 

1908.156            284^75            245760 
.192            284.17            245.28 
.214            284.3.}            245.80 

1908.19              284.42            245.56 

The  following  are  the  direct  measures: 
1850.31           283?40           200767           in           O2 
1855.25           283.45           205.19            in            O2 
1884.30           283.85           229.14           211            H2 
1908.19           284.42           245.56           3n            P 

The  proper  motion  of  P  Virginis  from  these  positions  is  : 
07792    in    io8?8 

From  meridian  observations  this  is  given  : 
Auwers         0.765    in    109.9 
Newcomb     0.789    in     110.4 
Boss             0.792    in    no.  6 

O2  also  compared  P  with  a  9m  star  nf.    The  distance  is  too 
great  for  the  micrometer,  and  I  have  therefore  measured  only 
the  differences  in  declination. 
1908  .20           A  Decl.  =  5  1  776           2n 

Comparing  this  with  the  four  measures  of  O2  (1852-1884) 
gives  substantially  the  same  value  for  the  proper  motion  in 
declination  as  that  from  the  other  star. 
From  A  B       Decl.  —  07252 
From  AC                       0.256 

Lalande  22662  and  22667 

R.A.  ii*57m49'        Decl.  +  4°  2' 

A  and  B  (8.  8...  9.0) 
1907.997             04?7o            ui72i 
8.000             94-42            in.  ii 

8.022                   94-50                  111.30 

1907.30              100.56            159.28 

We  have  the  following  measures  : 
1850.30           io8!i2           163733           in           OS 
1855.25           107.60           162.85           m           O2 
1884.29           103.57           160.91           sn           H2 
1907.30           100.56            159.28           2n           P 

The  correction  to  the  proper  motion  is  small  : 
Measures      07384    in    184^0 
Auwers         0.380    in     182.8 
Boss              0.391    in     181.3 

62  Urtae  Maj     (6.O.  .  .9.2) 
R.  A.  1  1"  35°  20'       Decl.  +  32°  25' 

1907.197           209?65             84729 
.217            299-54             84-50 
.258           299.53             84.33 

1908.00               94-54            in.  21 

Both  stars  are  found  in  several  star  catalogues,  and  each  has 
some  proper  motion.     Unfortunately  there  is  no  other  star 
near  enough  to  either  to  be  measured  with  the  micrometer. 

The  proper  motions  are  : 

Lalande  22662 
Porter          07145    in    2gs?2 
Ktistner        0.125    >n    284.8 
Paris             0.150    in    270.0 

Lalande  22667 
Porter          o7so8    in    172^4 
Kustner        0.544    in     174-2 
Paris            0.539    in    173.1 

1907.22             299.57             84.37 

The  small  star  is  DM  (32°)  2178.     The  measures  are  as 
follows  : 
1850.30           297?20           105776           in           O2 
1852.27           297.17            105.07            in           O2 
1855-25           297.45           103-99           m           O2 
1884.27           208.52            93.38           2n           H2 
1888.33           208.90             91.59           2n            Eng 
1907.22           299.57             84.37           3n           P 

Burnham:   Measures  of  Proper  Motion  Stars 


The  only  direct  measures  are  : 

1891.27  8p?37  lo8'.'67  211 

1908.00  94-54  in.  21  an 


Eng 


From  these  positions  the  apparent  motion  of  B  is  : 
o''6ii     in     167^6 


10  Virginia      (6. 2.  ..13.5) 
R.  A.  12"  3m  32'        Decl.  +  2°  34' 


1909.342 

10.244 
10.337 


ioi?88 
100.80 
100.57 


39"oi 
39.76 
39-66 


1909-97 


101.08 


39.48 


No  other  measures  of  the  small  star.  The  proper  motion  of 
the  other  is  given: 

Auwers         o"i87    in  I76?3 

Porter  0.174    in  172.6 

A.  G.  Alb.    0.182     in  174.8 


Lalande  22954     (6.0... 12. 8) 
R.  A.  12"  9™  o'        Decl.  —  9°  37' 


1909.340 
-342 
-378 


149-05 
I49.I5 


89.44 
89-56 


149.02 


89-43 


1909-35 

No  other  measures.    The  proper  motion  of  the  large  star 
from  meridian  positions  is : 

Porter       0^980    in     I77?2 
Paris          1.007    in     180.0 


8  Ursae  Maj     (3.5..  .IO.2) 

R.  A.  12"  9™  30'        Decl.  +  57°  42' 

A  and  B 


1907.197 
.217 

.258 

73?30 
73.30 
73-30 

I9o"o6 
190.06 
190.30 

1907.22 

73-30 

190.14 

A  and  C  (11.7) 

1907.217 
.258 

I24?6o 
124.80 

186.19 

1907.23 

124.70 

186.37 

For  AB  we  have  the  following  measures : 
1878.20  73? 18  I92?37  3n 

1886.46  73-33  192.02  2n 

1894.50  73.17  191-49  2n 

1907.22  73.30  190.14  3n 


Ball 
Eng 
Eng 


These  positions  give  for  the  most  probable  proper  motion  of 
6  Ursae: 

o'.'o8o  in  68?6 


The  only  prior  measure  of  the  third  and  fainter  star  is : 
1879.30  124?!  i88'.'59  in  p 

This  gives  nearly  the  same  proper  motion  as  the  other  star, 
but  as  it  depends  on  a  single  night,  the  other  result  is  to  be 
preferred. 

From  meridian  observations  the  proper  motion  is : 
Auwers  o"io3    in    86?  I 

Newcomb       0.121     in    87.5 
Boss  o.  no    in    88.4 


18  Virgin!*     (5.0...  11.5) 
R.  A.  I2h  14"  15'        Decl.  +  3°  59' 


1909.266 
.302 
.304 


2^78 
2.69 
2.49 


I3o"34 
130.39 
130.23 


1909.29       2.65     130.32 

No  other  measures.    The  proper  motion  is  given : 
A.  G.  Alb.  o"322    in    2s8?4 

Porter  0.315    in    257.2 

Auwers  0.325    in    258.8 

Boss  (G.  C.)         0.307    in    252.3 

SD  (12°)  3614     (5.0... 13. i) 
R.  A.  12"  14™  44'        Decl.  — 12°  54' 


1909.304 

•  342 

•  378 


3I2°77 
312.92 
313-21 


48.86 
48.43 


1909.34 


312.97 


48.59 


From  meridian  observations  this  star  has  no  sensible  proper 
motion : 

Boss    o"(X>2    in    323°8 


7  Can.  Ven.     (6. 5... 10.7) 

R.  A.  12"  24™  22"        Decl.  +  52°  12' 

A  and  B 


1908.249 
.266 
•  370 

171.83 
172.23 

io8"79 
109.23 
109.51 

1908.29 

172.04 

109.18 

A  and  C  (8.7) 

I908.230  326?00  232''2I 

.249     326.65  231.58 

.266     326.22  231.55 


1908.25 


326.29 


231.78 


There  are  no  other  direct  measures  of  these  stars.  C  is  DM 
(52°)  1630  (=  Groombridge  1896).  Taking  the  relative  posi- 
tions as  given  from  meridian  observations  in  Groombridge, 
O.  Arg.  N.,  A.  G.  Harvard,  and  Greenwich  lo-year  catalogues, 
with  the  present  measures,  we  have  for  the  proper  motion  of 
the  large  star : 

0^304    in    273?8 


Burnham:   Measures  of  Proper  Motion  Stars 


Some  of  the  prior  determinations  are : 

Auwers  07230    in  271^5 

A.  G.  Harv.        0.253    in  282.5 

Porter  0.288    in  273.6 

Boss  0.275    in  273.1 

If  C  has  any  proper  motion  at  all,  it  is  small  and  uncertain. 


A.  G.  Harv. 
Greenwich 


o7o37    m 
0.033    in 


7O.6 


X  Virgin!*     (5.0... 9.0) 
R.  A.  I2"  32™  3'        Decl.  —  7°  28' 


A  and  B 


1907.258 

I37°78 

172745 

.271 

137-48 

172.85 

•  331 

137-40 

172.89 

1907.29 

1907.258 
.271 
.331 


137-55 

AandC  (10.3) 
no?o8 
110.58 
110.57 


172.73 


221.49 
220.84 

221.77 


1886.39 

I37°70 

172786 

211 

Eng 

1894.26 

137-77 

173-03 

211 

Eng 

1907.29 

137-55 

172-73 

3n 

P 

1886.39 

110.72 

221.  2O 

2n 

Eng 

1894.27 

110.92 

220.90 

2n 

Eng 

1907.29 

110.41 

221.37 

3" 

P 

1907.29  110.41  221.37 

The  prior  measures  are : 
AB 


AC 


It  is  evident  from  these  positions  that  there  is  no  certain 
relative  motion  in  twenty  years.  It  is  remarkable  that  two 
small  stars,  so  far  removed,  should  have  exactly  the  same 
proper  motion,  which  seems  to  be  the  case  if  the  measures  are 
correct.  The  motion  of  A,  given  by  the  meridian  observations, 
is  too  large  not  to  appear  in  measures  given  above. 

Auwers  o?ios  in  2s8?4 
Newcomb  0.089  in  249.9 
Boss  0.084  in  244.0 

The  measures  of  the  comparison  stars  should  be  continued, 
and  other  stars  connected  with  both  if  possible. 

Engelhardt  measures  a  third  star  (Lalande  23627)  from  A, 
but  the  distance  is  too  large  for  the  lowest  micrometer  eye- 
piece. 

AD        1886.39       330?  10       321 7o8       2n       Eng 

A  comparison  of  this  with  Lalande  indicates  a  much  smaller 
proper  motion  for  x  Virginis. 


33  Virgin!,     (5. 8... 8. 8) 
R.  A.  12"  40-  16'       Decl.  +  10°  13' 


B  is  DM  (10°)  2467.    The  measures  are: 

1852.62  i83?25  192'' 59  3n  OS 

1884.33  187.28  180.14  311  H2 

1887.31  187.52  178.94  2n  Eng 

1907.32  190.91  171-87  3"  P 

It  is  possible,  though  not  very  probable,  that  a  star  of  the 
magnitude  of  B  has  some  proper  motion.  It  is  more  likely  to 
appear  hereafter  that  the  motion  of  A  from  transit  positions 
is  too  small. 

Measures      07576    in     138^0 

Auwers         0.518    in     149.0 

Porter  0.511     in     149.2 

Boss  0.531     in     149.2 


Piazzi 

XII.  179 

(6.8 

.--9-5) 

R.  A.  12" 

40m  39' 

Decl. 

+  24°  48' 

1908.079 

.102 

.118 
.192 

12. 
12. 
12. 

55 
48 
50 

I597io 
158-83 
159-19 
158.80 

Ji>)S.i_> 

12. 

49 

158.98 

For  comparison  we  have : 
1894.28  12?67 

1908.12  12.49 


an 


158.98 


Eng 


These  measures  give  for  the  proper  motion  of  A: 
Measures      07234    in    212^9 
Stumpe         0.256    in    207.1 
Porter  0.238    in    210.6 


34   Virgin!*     (6. 2... 9. 4) 
R.  A.  12"  41'"  it"        Decl. +  12°  37' 


1907.271 
•331 
•  348 

ioo!6s 
190.60 
191.47 

171778 
I7L93 
171-89 

1907-32 

190.91 

171.87 

1909.340 
.342 

•  359 

4?20 

3-95 
4-57 

138.80 
138.76 

1909.35 

4.24 

138.73 

No  other  measures  of  the  small  star.    The  proper  motion  of 
34  yirginis  is  given  from  meridian  observations : 
Auwers         07042    in     n6?6 
Boss  0.054    in     119.0 


Piazzi  XII.  188     (7.O...IO.O) 
R.  A.  12"  42™  49'        Decl.  +  12°  45' 

A  and  B 
1908.102  356?53  156745 


.118 
.156 

356.55 
356.92 

156.58 
157.31 

1908.12 


156.78 


B  and  C  (9.4) 

1908.102  328?53  135776 

.118  328.20  135.55 

.156  328.62  135-85 


1908. 12 


328.45 


135.72 


Burnham:   Measures  of  Proper  Motion  Stars 


The  measures  of  AB  are : 

1893.25  357^8  I55"23  2n  Eng 

1908.12  356.67  156.78  3"  f> 

The  proper  motion  of  A  from  these  positions  is: 
o'.'ioB    in     ii8?9 

This  is  less  than  that  given  by  transit  positions : 
Stumpe         o"28s    in     ns?S 
Porter  0.265    in     118.6 

For  BC  we  have: 

1893.25  328?47  I36"68  in  Eng 

1908.12  328.45  I35-72  3n  P 

As  the  first  position  depends  upon  a  single  night,  it  would 
not  be  safe  to  assume  any  change  in  the  distance.  If  that  were 
real,  it  would  make  the  proper  motion  of  A  still  smaller. 


Lalande  23917      (8. 2... 9.2) 
R.  A.  12'  43m  38'        Decl.  +  i°  52' 


1908.118 
.156 
.192 


321 ?7S 
321.89 
321.68 


141.10 
140-83 
140.89 


1908.16 


321.77 


140.94 

2n 
3" 


For  the  relative  motion  we  have : 

1893-36  3i8?45  I34''43 

1908.16  321.77  140.94 

Therefore  the  proper  motion  of  A  is : 
o"6gs    in     ioo?g 

The  meridian  observations  give: 

Boss       o'.'7OO    in  l83?7 

Porter    0.676    in  185.2 

Paris     0.688    in  180.0 

The  small  star  is  DM  (2°)  2584. 


8  Virginia      (3. 6... 10. 5) 
R.  A.  12"  49m  34'        Decl.  +  4°  3' 


Eng 
P 


1907.997 

8.022 

8.039 


138.43 
138.23 


i 59^62 
159-62 
159-40 


1908.02 


138.34 


The  only  other  measures  are: 

1879.30  I42?35  I52"o3 

1901.29  139.60  158.07 


159-55 


2n 
3n 


The  proper  motion  of  the  large  star  is  therefore: 
Measures      0*453    m    267?o 

Auwers  0.493  m  264.2 
Newcomb  0.480  in  262.8 
Boss  0.479  m  262.3 

8  Virginis  is  given  in  the  General  Catalogue  of  Double  Stars 
as  No.  6308. 


t  Virgin!*     (3.0... 11.9) 
R.  A.  12"  56"- 13'        Decl.  +  1 1  °  36' 

1909.071  H9°57  248%). 

.112  119.80  249.19 

.148  119-83  248.35 

For  the  proper  motion  of  the  large  star  we  have : 
1879.30  I2O?45  24o"89  2n 

1909.11  H9-73  248.73  3n 

The  annual  movement  of  e  Virginis  is  therefore: 
Measures      0^283    in    279?2 

This  has  been  given  from  meridian  observations: 
Newcomb     0^274    in    273?! 
Auwers         0.294    in    276.2 
Boss  0.273    in    273.6 


Oxford  (Z  26°)  33127     (10.1) 
R.  A.  I3h2m45!3i        Decl.  +  27°  o' s8"2 

This  place  for  1900  is  from  a  plate  taken  1908.25.  Compar- 
ing this  with  a  prior  exposure  gives  the  small  star  a  consider- 
able proper  motion : 

o"i4i     in    2io?8 

It  is  closely  sf  a  7.5  m  star : 

DM  (27°)  2217  and  A  (10.5) 
1911.107  144^25  i86"26 

.142  143.83  186.07 

.164  144.30  185.37 


1911.14 

43  Comae 

R.  A.  13"  6™  16' 


144.13 


185.90 


(5.0...  10. 8) 
Decl.  +  28°  29' 


1907.271 
•329 
•331 


250.53 
250.53 


91:02 
90.74 
90.73 


1907.31  250.57  90.83 

The  measures  cover  a  period  of  more  than  half  a  century, 

and  should  give  the  proper  motion  with  the  highest  degree  of 
accuracy. 

1851.34  278?oS  I3i"io           3n 
1855.32  277.60            127.48           in 

1884.35  264.80  104.95           3" 
1907.31  250.57             90.83           3n 

The  proper  motion  of  the  large  star  is  : 

Measures  i"io6  in  3ig?3 
Auwers  1.201  in  317.8 
Boss  1.184  'n  3!7-7 


OS 
O2 
H2 


Oxford  (Z  26°)  33210     (7.8) 
R.  A.  13"  14'"  6?37        Decl.  +  25°  8'  9':6 

The  place  for  1900  is  from  the  Oxford  astrographic  plates. 
From  a  comparison  of  the  photographic  positions  the  proper 
motion  is  given: 

0^292    in    298^9 

43 


Burnham:   Measures  of  Proper  Motion  Stars 


This  star  is  DM  (25°)  2619  (8.0).  A  comparison  of  the 
Oxford  and  A.  G.  Camb.  places  confirms  the  motion,  giving 
approximately  o?i9  in  290°. 

The  only  available  star  for  comparison  is  extremely  faint. 

A  and  B  (8.0... 15. 5) 
1911.219  i;s?7o  144*79 


a  Virgin!*     (l.o. .  .12.2) 
R.  A.  13*  i8m  54'       Decl.  —  10°  32' 


1909.071 
.148 
.164 


32?8o 
32.40 
32.47 


147*84 
147-50 
148.23 


1909.13  32.42  147.86 

The  only  earlier  position  is  from  a  single  night,  and  therefore 
any  deduced  proper  motion  at  this  time  would  be  of  uncertain 
value.  Future  measures  will  remedy  this. 

1879.25  32?9  144*42  in  fj* 

The  proper  motion  of  o  Virginis  from  meridian  observations 


is: 


Auwers  0*067  in  25i°7 
Newcomb  0.053  in  232.3 
Boss  0.055  in  228.9 


70  Virgin!*     (5. 2... 8.8) 
R.  A.  13*  22™  34'       Decl.  +  14°  25' 


1909.170 
.186 
.206 


137.80 
137-49 


287"95 
287.44 
287.44 


1909.19 


137.70 


287.61 


On  account  of  the  great  distance  for  the  micrometer,  all  the 
measures  are  subject  to  more  than  the  usual  error,  but  as  the 
time  interval  is  more  than  half  a  century,  the  proper  motion 
should  be  substantially  correct.  The  comparison  star  is  DM 
(14°)  2622. 

1852.27  144^03  304^54  in  OS 

1884.32  140.53  294.73  2n  HS 

1909.19  I37.70  287.61  3n  P 

From  these  positions  the  proper  motion  of  70  Virginis  is : 
0*647    in    203 ?4 

This  has  been  given  from  meridian  positions: 
Auwers         0^624    in    2O4?7 
Paris  0.626    in    205.0 

Porter  0.623    in    204.5 

Boss  0.634    in    202.5 


Piazzi  XIII.  163     (6.7...IO.O) 
R.A.13'35-7'       Decl. +  28°  40' 


1907.997 
8.000 

8.039 

1908.01 


227?28 
227.42 
«27-45 

227.38 


91712 
91-33 
91.41 

91.29 


I  do  not  find  any  proper  motion  from  meridian  positions. 
This  is  near  the  cluster,  Messier  3.    The  only  other  measure  is : 
1879.25  228^15  91*58  2n  p" 

The  two  positions  imply  a  proper  motion  in  A  of  0*042  in 


DM  (18°)  2776     (9. 2. ..10.6) 
R.  A.  13"  39™  14'       Decl.  +  18°  27' 

A  and  B 
1911.260  i8i?37  88*78 


•334 
•337 


181.70 
181.25 


88.83 
88-35 


1911.31  181.44  88.65 

This  small  star  has  an  extraordinary  proper  motion : 
A.  G.  Berlin     1*889    in     i68?3 

No  other  direct  measures.    From  measures  by  Slocum  of  a 
plate  made  with  the  4O-inch  refractor  we  have: 
1910.10  i8i?i9  oofog 

A  and  DM  (18°)  2777  (9.0) 

1875  A  Decl.  395*0  A.  G.  Ber. 

1907-45  33L25  Photo 

1910.10  321.65  Photo 

I9".33  319-94  P 


Oxford  (Z  26°)  34103     (10.3) 
R.  A.  13"  39™  44?oi        Decl.  +  26"  5'  36? I 

This  place  for  1900  is  from  an  Oxford  plate  made  1008.34. 
It  is  identical  with  the  9.5  m  star,  DM  (26°)  2489.  From  a 
comparison  with  an  earlier  plate  of  the  Astrographic  Catalogue, 
the  proper  motion  is  deduced : 

0*186    in    28s?6 

A  and  B  (9.5... 13) 

191 i . 164  i6a?57  87?oo 

.184  162.67  88.03 

.219  162.38  87.23 


1911.19 


162.54 


87.42 


The  comparison  star  is  much  too  faint  to  appear  on  the  pho- 
tographic plate 


Oxford  (Z  26°)  34238     (9.3) 
R.  A.  13*  52™  25^0       Decl.  +  25°  24'  37*0 

The  place  (1900)  is  from  an  Oxford  astrographic  plate  made 
1908.34,  and  the  proper  motion  from  this  and  an  earlier  plate 
is  given : 

0*164    in    i67"6 

This  star  is  identical  with  the  9.1  m  star,  DM  (25°)  2706. 

A  and  B  (9.3.. .12.9) 
1911.142  27?40  113*93 


.219 

1911.18 


27-58 
27.49 


113-84 


Burnham:   Measures  of  Proper  Motion  Stars 


- 


Oxford  (Z  26°)  34278     (10.9) 
R.  A.  13"  S4m  49^12        Decl.  +  25°  43' 40^2 


The  place  for  1900  is  from  an  Oxford  astrographic  plate 
taken  1908.34;  and  this  compared  with  a  prior  photograph  of 
the  same  region  indicates  a  remarkable  proper  motion  for  a 
star  of  this  magnitude : 

A  and  B  (10.7) 

1910.280      58^65  161^18 

.282      58.27  160.80 

.299      58.82  160.81 


1910.29 


58.58 


160.93 


A  and  DM  (25°)  2715  (9.3) 
1910.260  93?52  258"94 

.280  93.72  258.48 


1910.27 


93.62 


258.71 


A  comparison  of  the  Oxford  and  A.  G.  positions  indicates 
considerable  proper  motion  in  one  or  both  stars. 

Prof.  H.  C.  Plummer  gives  the  positions  of  the  two  com- 
parison stars  from  the  last  plate : 

1908.34  s8?5  i6o?4i 

1908.34  93.7  256.89 


Oxford  (Z  26°)  34290     (10.0) 
R.  A.  13"  55'"  I9?95        Decl.  +  25°  48'  44^9 

This  star  is  DM  (26°)  2513  (9.5).    The  place  give  here  is 
for  1900  from  an   Oxford  plate  taken    1908.34.     Compared 
with  a  prior  plate,  the  proper  motion  appears  to  be : 
o"i49    in     I22?5 

There  is  no  good  comparison  star  for  the  micrometer. 

A  and  DM  (26°)  2517  (8.9) 

1910.28        A  R.  A.  +  76!  2        A  Decl.  +  log^S        P 
I87S  76.1  105.3        A.  G.  Camb. 


Lalande  26147      (7.0... II. 5) 
R.  A.  14" 1 1 ™  39'        Decl.  —  6°  59' 


1007.258 
8.192 
8.403 


8^78 
7.80 
8.45 


44.07 
44-36 


I907-9S 


8-34 


43.96 


Observed  at  first  by  mistake  for  Ho  384.    No  other  measures. 


The  complete  measures  are : 

1887.48  2i6?67  154^43  2n 

1894.44  217.03  154.92  2n 

1907.30  217.16  155 .75  3n 


Eng 
Eng 


From  a  mean  of  the  first  two,  and  the  last,  the  proper  motion 
of  the  large  star  is : 

Measures  0^084  in  75?7 
Auwcrs  0.114  in  95 -° 
Boss  0.114  in  109.4 


6  Boot  is     (4.4...ll.o) 
R.  A.  14*  2im  7'        Decl.  +  52°  24' 


1907.140 

.197 
.214 

182.0 
182.1 

6g".o7 
69.14 
69.04 

1907.18 

182.2 

69.08 

1910.337 
•340 

.356 

181.5 
181.5 

181.8 

69"34 
69.11 
69.26 

1910.34 

181.6 

69.24 

The  only  other  measures  are  given  in  the  Pulkowa  Observa- 
tions Vol.  X  as  follows : 


1854.64 
1877.00 
1883.47 


i8i?9 
181.9 
182.2 


09^08 
98.61 
99.16 


in 
2n 
an 


O2 
O2 
H2 


Evidently  there  is  no  relative  motion;  and  apparently  each 
of  the  distances  is  30"  too  large.  It  is  not  a  printer's  error,  as 
the  distance  of  99"  is  twice  referred  to  in  the  introduction  to 
Vol.  X.  The  proper  motion  of  the  system  is : 

Auwers  0*468  in  2ii?6 
Newcomb  0.468  in  210.2 
Boss  0.471  in  210.4 

There  is  no  third  star  within  reach  of  the  micrometer. 


SD  (7°)3856     (9.0... 9. 6) 
R.A.  if  24"  35*        Dec!.  — 8°  6' 


1007.137 
.197 


I5I.5 
iSi-3 


5o.i3 
49-95 


1907.16 


151-4 


50.04 


I  do  not  find  that  any  proper  motion  has  been  assigned  to  the      4125).    No  other  measures, 
principal  star. 


The  larger  star  is  said  to  have  some  proper  motion  (A.  N. 


18  Boot i*    (5. 6. ..10.5) 
R.  A.  14"  13™  27"       Decl.  +  13°  34' 


1907.271 
.312 
•  329 

1907.30 


217.08 

217.15 

217.16 


I55"82 
155.87 
I55.56 

155-75 


a  Booti*     (4.7...io.o) 
R.  A.  14"  29™  27'        Decl.  +  30°  16' 

A  and  B 
1907.197  82?s  237^18 


•233 
1907.21 


82.4 
82.45 


237-06 
237.12 


45 


Burnham:   Measures  of  Proper  Motion  Stars 


A  and  C(n.s) 
I907-I97              97°2              237"  12 
•233              97-2              236.85 

22  Librae     (6.5..  .13.1) 
R.  A.  is'o1"?'        Decl.  —  i6°i' 

1909.378            275?5                10799 
.381            275.1                11.27 
.458            274-5                ".07 

1907.21                97.2              236.98 

B  and  C 
1907.197             i8o?8                5978o 
.214            180.2                60.31 
.233            180.5                60.37 

1909.41              275.0                11.  ii 

This  star  has  a  faint  companion  not  heretofore  seen.    There 
is  another  13  m  star,  234^4  :  35"7- 
The  proper  motion  of  22  Librae  is  : 
Auwers         o7ii3    in    264^0 
Boss              0.069    m    249.7 

43  Bootis     (s.2...ll.o) 
R.  A.  15"  2™  2'        Decl.  +  25°  20' 

A  and  B 
1907.329             53?i5            107728 
•331             52-65            107-15 
•351              53-i8            107.19 

1907.21              180.5               60.  16 

We  have  the  following  measures  of  AB  : 
1852.40             8i?53           248*00           2n            OS 
1870.46             81.82           244.71            in            O2 
1881.30             81.92           244.00            in            O2 
1907.21             82.45           237.12           2n            P 

These  positions  give  for  the  apparent  movement  of  A  : 
o"2o8    in    62?3 

The  measures  of  BC  are  : 
1853-42           i8i?i5             57"6s           m           O2 
1870.46           180.38             58.53            in           O2 
1881.30           181.17             59.15            m           O2 
1007.21            180.50             60.  16           3n            P 

One  of  these  stars  has  a  small  proper  motion: 
07052    in    348?6  (±180°) 

Assuming  that  this  is  in  B,  and  applying  the  correction  to  the 
observed  movement  of  A,  we  have  for  the  real  proper  motion 
of  that  star  : 
Measures        0^228    in    49?7 
Auwers           0.225    in    53.8 
Newcomb       0.231    in    57.5 
Boss               0.227    in    58.2 

P  Una*  Afin     (2.  3.  ..II.  5) 
R.  A.  14"  51"  6'        Decl.  +  74°39' 

1908.060            342?25            209^10 
.159            342.25            209.14 
.266            34i-o8            209.19 

1007-34               52.99            107.21 

A  and  C  (9.5) 
1907.329              44?33            246751 
.331              44.32            246.39 
.351              44.32            246.60 

1907.34                44.32            246.50 

B  and  C 
1007.351             37°28            I4i768 

C  is  DM  (25°)  2874,  and  is  known  to  have  a  large  proper 
motion,  given  by  Porter  : 

o?933    >n    301  ?o 

The  measures  of  AB  are  : 
1888.53             ss?32            io87ig           4n            Eng 
1907.34             52.99            107.21            3n            P 

From  these  measures  the  proper  motion  of  45  Bootis  is  : 

Measures      07239    in     I3i?5 
Auwers         0.248    in     140.5 
Newcomb     0.261     in     135.1 
Boss              0.262    in     134.3 

The  measured  positions  of  AC  are: 
1887.49             49°77           252729            in            Eng 
1889.56             49-27           251.46           3n            Eng 
1907.34             44.27           246.50           3n           P 

Rejecting  the  single  observation,  the   apparent  motion  of 
Cis: 
17255    in    303^9 

Correcting  this  for  the  proper  motion  of  A  as  shown  by  the 
measures  of  AB,  we  have  for  the  real  proper  motion  of  C  : 
l7oi8    in    302!  I 

i-ioS.li>                342.16              209.14 

The  only  other  measure  is: 
1879.30           342  ?8           207782            in            p* 

As  the  first  position  depends  upon  a  single  night,  the  result- 
ing motion  cannot  be  considered  as  very  certain.    A  continua- 
tion  of  the  measures   after  a  proper  interval   of   time   will 
give  a  reliable  result.    From  the  two  positions  we  have  : 
07092    in    282^2 

The  values  from  meridian  observations  are  discordant  and 
doubtful. 
Auwers               07034    in    266?6 
Groombridge       0.018    in    279.3 
Newcomb            0.004    '"    317-* 
Boss                     0.030    in    279.6 

Burnham:   Measures  of  Proper  Motion  Stars 


SD  (15°)  4042     (9.0... 9. 3) 
R.  A.  I5h3m38"        Decl.  — 15°  50' 

A  and  SD  (15°)  4040 

1907.258  3S4?8o  114".!  5 

•425  355-00  114.42 

•444  355-00  114.88 

1910.414  356-57  125-35 

•436  357-27  125.09 

•452  356.78  125.32 

-455  357-00  125.33 

A  and  a  (11.3) 

1907.258  178? i 5  40*42 

.425  178-83  40.02 

•444  178.37  39-66 

1910.414  172.33  29.42 

•  452  171.58  29.76 

•455  171.11  29.75 

No  other  measures  of  the  small  star.    The  mean  results  are : 
1907.37  I78?45  40':oi  3n  fj 

1910.44  171.67  29.64  3n  (J 

a  and  SD  (15°)  4041 

1907.258            l8l?35            26o?27  single  dist. 
The  following  are  the  measures  of  AB : 

1892.40           338^20             66!'22  I3n  Lv 

1894.44           341-02             72.40  2n  Eng 

I907.37            354-93            114-48  3n  0 

1910.44           356-90           125.36  4n  p 

From  these  positions  the  proper  motion  of  A  is : 
3'.'669    in     I95?9 

This  is  given  from  meridian  observations : 

Porter  3"66s    in     195.0 

Bauschinger        3.707    in     195.4 

SD  (15°)  4041  has  exactly  the  same  proper  motion.     Com- 
paring the  above  with  O.  Arg.  S.  and  Cin13  shows  no  sensible 
relative  motion.    This  is  given  from  meridian  observations: 
Porter  3^719    in     195^5 

Bauschinger         3.730    in     195.2 


0   Coronas      (5. 7... 9. 6) 

R.  A.  15"  i5m  "•        Decl. +  30°  3' 


l  Draconis     (3. 5. ..9. 2) 
R.  A.  15"  22™  16"        Decl.  +  59°  23' 


1909.112 
.148 
.164 

49°90 
49-77 
49-75 

254"76 
254-67 
254-52 

1909.14 

49.81 

254-65 

The  smaller  star  is  DM  (59°)  1655.  The  only  other  measure 
is: 

1879.26  so?o  254*67  in  p3 

It  is  obvious  that  the  large  star  has  no  proper  motion  which 
can  be  separated  from  the  errors  of  the  observer  in  any  form 
of  measurement.  This  is  shown  by  the  contradictory  results 
found  from  meridian  observations  for  the  proper  motion  of 
i  Draconis: 

Newcomb 

Auwers 

Groombridge 

Gr.  lo-year 


Boss 


0:014 
0.015 
0.015 
0.027 
0.016 


48?2 
336.4 

2-9 

325-2 
333-0 


Both  stars  are  given  in  A.  G.  Hels.  from  which  we  have : 
1875  so?o  254^6 


43  Librae     (5.0. ..10.5) 
R.  A.  15"  35™  2'        Decl.  —  19°  if 


1909.378 
.381 
•  458 


279?6o 
279-55 
279-45 


I7i"37 
170.91 
171.44 


1909.071 

.112 
.148 


337-45 
337.60 
337-33 


146^55 
146.74 
146.82 


I909.II 


337.46 


146.70 


The  earlier  measures  of  this  star  are: 
1887.50  336°73  I47"67 

1894.56  336.77  147.89 


2tl 

2n 


Eng 
Eng 


A  mean  of  these  positions  compared  with  the  present  rela- 
tion indicates  a  smaller  proper  motion  for  the  principal  star 
than  that  previously  given,  the  movement  in  declination  being 
reversed. 

Measures      o"ii8    in    275?6 

Auwers         0.147     in    250.5 

Boss  0.138    in    245.1 


1909.40  279.53  171-24 

The  small  star  is  SD  (19°)  4187  (9.3).  The  other  measures 
are: 

1886.38           278^75            172*51  2n            Eng 

1894.49            278.42            172.40  in            Eng 

Rejecting  the  single  observation,  we  have   for  the  proper 
motion  of  43  Librae: 

o"n6    in    2i7?6 

From  meridian  observations  this  motion  has  been  given : 
Auwers         o"ii7    in    2i4?o 
Newcomb     0.117    in    205.1 
Boss  0.127    in    200. 8 

i|>  Serpent!*     (6.2. .  .9.  i) 
R.  A.  15"  38ra  o"        Decl.  +  2°  56' 

A  and  B 
1908.156  207?98  2o8"o8 


.192 
.249 

207.65 
208.13 

208.29 
207.64 

1908.20 

207.92 

208.00 

1908.156 
.192 
.249 

B  and  C  (7.4) 

235°S5 
235-30 
235-45 

I7i"92 
171.78 
171.63 

1908.20 

235-43 

171.78 

47 


Burnham:   Measures  of  Proper  Motion  Stars 


A  and  a  (10.8) 

V  Serpent!*     (4.0... 

10.6) 

1908 

.266 

280^38 

i7i"53 

R.  A.  ii" 

50™  55" 

Decl 

+  16° 

3' 

.288 

280.57 

172.07 

.291 

280.68 

171.42 

A  and  B 

1908 

.28 

280.54 

171.67 

1008.041 

315° 

02 

201". 

01 

, 

156 

SiS- 

05 

2OI. 

92 

The 

only  earlier  direct  measures  of  Ao 

are: 

192 

SiS- 

30 

201. 

65 

1007.43 
1894.49 

279-73 
280.03 

172.00 
172.27 

2n           Eng 
2n            Eng 

1908. 

13 

315- 

12 

2OI. 

53 

1908.28 

280.54 

171.67 

3n           P 

B  and  C 

(II.  0) 

A  mean 

of  the 

first  two 

compared  with  the  last  gives  the 

1008. 

041 

165° 

38 

177' 

05 

proper  motion  of 

the  large  star: 

• 

156 

165. 

42 

177. 

14 

0^116 

in    2OA.°<i 

• 

192 

165. 

23 

177. 

18 

This  smaller  value  has  some  support  in 

the  measures  of  the 

1908. 

13 

165. 

34 

177. 

12 

large  stars  as  compared  with  the  places  in  A.  G,  Albany,  al- 
though B  and  C  may  have  some  motion  of  their  own.  The 
faint  star  may  be  treated  as  fixed.  The  errors  of  the  microm- 
eter places,  and  especially  the  shortness  of  the  interval,  doubt- 
less have  some  effect,  but  this  will  be  done  away  with  by  later 
measures. 

The  meridian  values  of  the  proper  motion  of  the  large  star 
are: 

Stumpe         0:171     in    2I3?6 

Porter  0.175    'n    215.7 

Boss  0.173    in    209.7 


x  Coronae     (5.0...  II.  7) 
R.  A.  15"  46"  43'       Decl.  +  36°  2' 


1909.304 
.340 
•342 

2O2?20 
202.48 
202.35 

I39"73 
139-40 
139-93 

1909-33 

202.34 

I39.69 

There  are  no  other  measures  of  the  small  star. 

The  proper  motion  of  x  Coronae  is  given  : 
Auwers         0:359    in     i86?4 
Porter  0.360    in     185.8 

Boss  0.364    in     182.1 


39  Serpent!*     (6.0...I2.O) 
R.  A.  15"  47"  37'        Decl.  +  13°  34' 


1907.197 

•214 
.217 


U5?6 

nS-7 
115.9 


98:08 
98.55 
98.16 


1907.21 


115.73 


98.26 


For  finding  the  proper  motion  of  the  principal  star  we  have  : 
1862.38           I30?52           106:45  in  OS 

1883.60  124.02  101.77  in  HZ 

1907.21  115-73  98.26  3n  P 

The  proper  motion  is  therefore: 

Measures      o76i6    in  io6?o 

Auwers        0.562    in  198.8 

Porter  0.580    in  198.0 

Boss  0.586    in  196.0 


No  other  measures  of  C.  For  AB  we  have: 

1850.41           299?o8  139:25            in            OS 

1854.38           300.88  143-44            m            O2 

1883.47           309.37  173-55           2n            H2 

1908.13           315.12  201.53           sn            P 

From  which   we  have  the  corrected  proper   motion   of   f 
Serpentis: 

Measures  1^341     in     IO4?5 

Auwers  1.313    in     167.5 

Newcomb  1.324    in     166.9 

Boss  1.332    in     166.9 


49  Librae     (5.4...II.O) 
R.  A.  15"  S3"1  36'        Decl.  —  16°  1  1' 


1907.444 

3O6°35 

155:29 

7-463 

306.15 

155.58 

8.192 

306.63 

J54.52 

8.249 

306.65 

I54.92 

1907.84 


306.44 


155.08 


We  have  the  following  measures  : 
1886.38  301^28  162:70 

1894.49  302.72  159.54 

1907.84  306.44  155.08 


2n 
in 
4» 


Eng 
Eng 
P 


Rejecting  the  single  measure  for  obvious  error,  we  have  fo 
the  proper  motion  of  49  Librae: 

0:754    >n    24i?9 

The  meridian  values  are  nearly  the  same  : 
Auwers         0:775    in    241  ?7 
Porter  0.750    in    239.6 

Newcomb     0.737    in    238.2 
Boss  0.749    in    237  7 


8  Ophiuchi     (2.  6.  ..13.0) 
R.  A.  i6"8m6i       Decl.  —  3°  23' 


1908.192 
-249 
•252 

294.83 
294-50 

65"54 
65.26 
65.68 

1008.23 

294-45 

65.49 

Burnham:   Measures  of  Proper  Motion  Stars 


The  only  other  measure  is : 
1879.38  291  ?6 


in 


As  the  comparison  star  is  very  faint,  and  the  first  position 
from  a  single  night,  no  great  weight  can  be  given  to  this  proper 
motion : 

Measures      o"i2o    in     i88?i 

Auwers         0.155    in    205.7 

Newcomb     0.152    in     198.2 

Boss  0.161     in     197.9 


18  Scorpii     (5.6..  .13-3) 
R.  A.  16*9°  6"       Decl.  —  8°  3' 


1910.225 
.260 
•  395 


2i6?4 
215.9 
216.8 


23.40 
23.64 
23.61 


1910.29 


216.4 


23.55 


No  other  observations  of  the  small  star.    The  proper  motion 
of  18  Scorpii  is  given  : 

Auwers         o"54O    in     162?! 
Boss  0.564    in     156.2 


15  Herculis      (7.5.. 
R.  A.    16"  iom  35"        Decl. 

A  and  B 
1907.197  257^70 


.217 
.258 


258.00 
257.90 


. 9. 8) 

+  11°  43' 


64?89 
64.92 
64.97 


1907.22 


257.87 


B  and  C  (n.o) 
1907.258  I7?8o 

.293  17.80 


64.93 


107.80 


1907.28  17.80  107.92 
No  other  measures  of  C.    For  AB  we  have  : 

1887.53  259?23  66? 16  2n 

1894.54  259.37  65.79  2n 
1907-22           257.87  64.93  3n 

im  which  the  proper  motion  is : 

Measures  o"iO4    in  3io?6 

Auwers  0.113    in  294.1 

Boss  0.058    in  300.0 


Lalande  29917      (8.6...IO.6) 
R.  A.  16"  16™  30'       Decl.  +  67°  32' 


Eng 
Eng 


1908.118 
.156 
.192 


I3°58 
I3-50 
13.18 


63.52 
63-39 


1908.16  13.42  63.44 

It  will  be  seen  from  the  measures,  that  whatever  the  proper 
otion  of  the  larger  star  is,  it  is  sensibly  the  same  for  the  other. 
1893.67  I3°35  64:'oo  2n  Eng 

1908.16  13.42  63.44  3n  6 


The  proper  motion  of  A  is  given  in  the  star  catalogues : 
Stumpe          o"482    in    283?4 
Porter  0.498    in    281.9 

Schroeter     0.519    in    279.7 

There  is  no  third  star  near  enough  for  the  micrometer. 


|  Coronae     (5.0. ..12. 4) 
R.  A.  16*  17"  25'       Decl.  +  31°  10' 


1909.340 

•  342 

•  378 


59-52 
59-45 
59-45 


185" 19 
185.05 
185.03 


1909.35 


59-47 


185.09 


No  other  measures  of  the  small  star.  The  proper  motion  of 
Coronae  is  given: 

Auwers         o"i38    in  326?3 

Boss  0.132    in  314.1 

Newcomb     0.121    in  326.6 


Lalande  29836     (8.3. ..II. 3) 
R.  A.  16"  17™  36'       Decl.  —  13°  21' 


1909-381 
•458 
.496 


28l  ?20 
280.78 
28l  .03 


103-43 
IO2.82 
102.65 


1909.44 


281.00 


102.97 


No  other  measures.    The  proper  motion  of  the  large  star  is 
given : 

Porter    o"333    in    224?6 
Paris      0.314    in    220.8 


Anonymous     (10.7.  •  .13.3) 
R.  A.  16"  20m  35'       Decl.  +  48°  38' 

A  and  B 
1911.260  283?4O  70*41 


•  337 

•  375 


283.38 
283.78 


70.64 
70.94 


1911.32  283.52  70.66 

This  small  star  is  given  a  large  proper  motion  by  Kapteyn : 
i"23i     in  ,in?2 

No  other  micrometer  position  in  verification  of  this  motion. 
The  nearest  A.  G.  star  is  sf: 

A  and  DM  (48°)  2399  (8.9) 
1911.29        AR.  A.  +  1 13^16        A  Decl.  —  io6"8s 

* 

(J  Herculii      (3.0.  .  .IO-3) 

R.A.  I6h25ra4'        Decl. +  21°  45' 


1909.112 
,148 
.164 


274.40 

274-50 


255"6S 
255-29 
255-01 


1909.14 


274-50 


255-32 


49 


Buniham:   Measures  of  Proper  Motion  Stars 


The  first  measures  are  too  discordant  in  distance  to  be  used 
for  proper  motion : 

1879.30  274?3  256715  in  P' 

1879.34  274-3  257-74  m  P 

Comparing  the  last,  which  seems  to  be  entitled  to  the  largest 
weight,  with  the  recent  position,  we  have  for  the  proper  motion 
of  P  Herculis: 

Measures      oTo86    in    254?o 

Auwers         o.no    in    266.4 

Newcomb     0.109    in    256.9 

Boss  0.107    in    257.1 


12  Ophiuchi     (6.0... 13. 7) 

R.  A.  16"  3om  3"        Decl.  —2°  4' 


The  proper  motion  from  meridian  positions  appears  to  be  too 
large  unless  the  smaller  star  has  some  motion  of  its  own.  For 
determining  this  hereafter,  I  have  connected  a  very  faint  star 
with  C. 

B  and  C  (12. 5) 

1909.227  173? 18  76"07 

.304  172.80  75.96 

.378  172.83  75.51 


1909.30 


172.94 


75.85 


1909-381 

10.414 
10.436 


244?8o 
245.67 
245.20 


ioo734 

IO0.42 

ioo.04 


1910.08 


245.22 


100.27 


No  other  measures.    The  proper  motion  of  12  Ophiuchi  is 
given  in  the  catalogues : 

Auwers         07400    in     129?! 


A  comparison  of  a  mean  of  the  two  positions  by  Engelhardt 
with  the  present  measures  of  AB  gives  for  the  proper  motion 
of  the  principal  star : 

o7oso    in    292 ?6 


The  proper  motion  of  the  principal  star  is  given  from  the 
star  catalogues : 

Auwers         07167    in  291  ?o 

A.  G.  Alb.    0.128    in  290.1 

Porter  0.081     in  280.7 


45  Herculi*     (5. 3.  ..10.5) 
R.  A.  16"  41™  52'       Decl.  +  5°  28' 


Porter          0.527    in    128.0 
Paris             0.539    'n     128.3 
Boss              0.546    in     125.6 

SD(2°)4230     (7.0.  ..12.5) 
R.  A.  16'  34™  52"        Decl.  —  2°  37' 

1009.378             62?i8             91750 
.381             61.45             91-84 
.400             61.64             91.36 

I9H-395             83?98 
.411             83.87 
.414             83.90 

122767 
122.59 
122.85 

1911.41               83.92            122.70 

No  other  measures.    The  proper  motion  is  apparently  small. 
Auwers         o7o75    in    234?3 
Boss              0.051     in    208.0 

DM  (4)  3265     (8.  3...  8.  3) 
R.  A.  16"  44m  7"        Decl.  +  4°  56' 

I9II-395            353°8o              52744 
.411            353-66              52.53 
.414            353-20              52.36 

1909.39               61.76             91.57 

No  other  measures.    The  proper  motion  of  the  principal  star 
is  given  from  meridian  observations  : 
Porter       07432    in    i88?6 
Paris         0.481     in     180.0 

i9»-4i             353-55 

52.44 

Bradley  2134     (7-5...9-O) 
R.A.  i6"4o"Si"       Decl. +  2°  28' 

A  and  B 
1909.227  2i9?04  150*10 


B  is  DM  (4°)  3264  (9.0).    No  other  measures.    From  me- 
ridian positions : 

1879  352?9  5273  A.  G.  Alb. 


30  Ophiuchi      (5.0... p. 8) 


-304 

219.38 

150.33 

f\.    1U      5<^ 

w         i 

—  H    m 

•  378 

219.52 

150.02 

1907 

.258 

69^65 

92774 

1909.30 

219.31 

150.15 

.331 

69.03 

92.63 

.351 

68.92 

92.69 

These  stars  are  DM  (2" 
lowing  from  meridian  and 

)  3174  and  3173.    We 
micrometer  positions  : 

have  the  fol- 

1907 

-31 

69.20 

92.69 

1880.8 

220?0 

1487  1 

A.  G.  Alb. 

The  prior  measures  are  : 

1887.51 

219.67 

150.48 

2n 

Eng 

1887 

Si 

69^80 

9' 

782 

zn 

Eng 

1894-51 

219.62 

150.35 

211 

Eng 

0M 

48 

69-63 

92 

-52 

211 

Eng 

1894.5 

2I9.I 

149.8 

Porter                         1007 

3i 

69.20 

92 

.69 

3n 

P 

50 


Burnham:   Measures  of  Proper  Motion  Stars 


These  measures  are  not  consistent,  and  therefore  any  derived 
proper  motion,  must  be  considered  as  more  or  less  uncertain. 
A  mean  of  the  first  two,  compared  with  the  last,  gives  for  the 
large  star: 

Measures      o7o6o    in     191  ?3 

Auwers         0.104    in    227.1 

Newcomb     0.080    in     199.3 

Boss  0.103    in    211.5 


34  Ophiuchi     (6.2. .  .10.3) 
R.  A.  16"  s8m  27"        Decl.  +  13°  44' 

A  and  B 

1909.148     267?so  151^52 

.151     267.63  iSi-75 

.167     267.77  iSi-59 


1909.15      267.63     151-62 

B  and  C  (10.5) 

1909.167  209? 57  98764 

.227  209.28  98.38 

.304  209.27  98.50 

1909.23  209.37  PS-Si 

No  other  measures  of  C.    Of  the  other  we  have: 

1887.52  266?55  I5i"44  2n  Eng 

1894.69  267.03  152.11  an  Eng 

From  these  positions  the  proper  motion  of  the  large  star  is: 
o"i24    in     178^7 

The  first  values  from  meridian  observations  differ  in  direc- 
tion, and  show  a  reverse  motion  in  R.  A. 

Auwers         o7i34    in     185^6 
Porter  0.134    in     199.4 

Boss  0.135    in     173-8 

The  principal  star  is  the  following  and  smaller  member  of 
the  wide  pair,  2  33,  App.  I. 


DM  (42°)  2810     (9. 4... 9. 2) 
R.  A.  17"  9™  22'       Decl.  +  42°  29' 

A  and  B 
1912.236  279?32  209^96 


.255 
.274 
.296 


279-42 
279.07 
279-23 


209.33 
209.13 
209.07 


1912.26  279.26  209.37 

From  a  comparison  of  photographic  plates,  this  small  star  is 
given  an  unusually  large  proper  motion  (Bui.  Acad.  Sci.,  St. 
Petersburg,  Feb.  1912)  : 

ifin     in    250?s 


No  careful   meridian  position   of   both   stars    found. 
approximate  DM  places  give: 

1855  275°  255" 


The 


B  is  DM  (42°)  2808.     Measures  after  a  short  interval  will 
show  whether  this  large  motion  is  real. 


Lalande  31478     (7.  8...  9.  8) 
R.  A.  17"  13™  30s        Decl.  —  7°  53' 


1908.252 

222?80 

102773 

.266 

223.23 

102.88 

.288 

223.25 

103.01 

•  331 

222.87 

103.05 

1908.28 

223.04 

102.92 

The  only  earlier  measure  is  : 

1893.61  222?6o  105748  2n 

1908.28  223.04  102.92  4n 

These  positions  give  for  the  proper  motion  of  A: 

Measures      07183    in  2os?4 

Porter  0.203    in  183.8 

Paris  0.196    in  180.0 


DM  (52°)  2058     (8.o...n.i) 
R.  A.  17"  24™  21'       Decl. +  51°  59' 


Eng 


1910.148 
.164 
.184 


105-55 
105.87 
105.84 


123.22 
123.56 
123.65 


1910.16  105.75  123.48 

The  only  other  measures  show  no  change. 
1879.98  ios?93  123700  2n 

DM  (18°)  3424     (9.0...  10.3) 
R.  A.  17"  33™  32s        Decl.  +  18°  38' 


Bl 


1912.274 
.351 


264750 
264.73 
264.61 


267777 
267.94 


267.85 


1912.31 

This  star  is  supposed  to  have  a  large  proper  motion  : 
A.  G.  Berlin      17255     in    314^5 

For  comparison  the  nearest  available  star  is  measured.    The 
nearest  DM  star  is  the  following: 

A  and  DM  (18°)  3423  (9.0) 

1875  AR.  A.  —  25:7       A  Decl.  —  2272       A.  G.  Ber. 

1912.27  —24.9  —  4.0       P 

These  positions  imply  a  proper  motion  principally  in  declina- 
tion. 

DM  (68°)  946     (9.  1...  7.  9) 
R.A.  I7"37m8s       Decl.  +  68°  27' 


1907.293 
.312 
•329 


61.78 
62.23 


67791 
67.30 
67.73 


1907.31  62.13  67.64 

In  this  instance  the  proper  motion  is  in  the  smaller  star.  B 
is  DM  (68°)  947.    For  comparison  we  have: 

1877.7  99°7  49"64  A.  G.  Chris. 

1892.76  77.68  55.93  2n  Eng 


1907.31 


62.13 


67.64 


3n 


Buriiham:   Measures  of  Proper  Motion  Stars 


The  micrometer  measures  give  for  the  proper  motion  of  A: 

17397    in     194-7 
Or  combined  with  A.  G. : 

1*399    'n     I9S°2 

From  meridian  observations : 

A.  G.  1*270  in  197?! 

Porter  1.296  in  196.8 

Schroeter      1.350  in  196.7 

The  catalogues  find  no  proper  motion  in  B. 


83  Herculi*     (5.8.  ..9.4) 
R.  A.  17"  37™  33'       Decl.  +  24°38' 


1909.340 
-342 
•378 


259.78 
260.08 


157^67 
157-37 
157-57 


1909.35  259-90  157-54 

The  prior  measures  of  this  star  are  as  follows : 

I59"75  2n 

159.63  an 


1886.63 
1894.69 


259°45 
259-57 


Eng 
Eng 


From  these  measures  we  have  for  the  proper  motion  of  83 
Herculis: 

0*129    in    233?o 

From  meridian  positions : 

Auwers  0*134    in    218?! 

Porter  0.124    '"    219.0 

Boss  0.131    in    208.6 


DM  (20°)  3646     (8.5-..9-O) 
R.  A.  17'  57m  3'       Decl.  +  20°  58' 

A  and  DM  (20°)  3647 

1912.353  154*43  I45"o6 

.389  154-63  145.75 

.408  154.50  145-89 

1912.38  154-52  145-57 

A  and  star  9.001 

1912.353  284?23  144*94 

.389  284.05  145-05 

.408  284.00  145-23 


1912.38 


284.09 


145-07 


In  consequence  of  an  error  in  plotting  these  stars  on  the  DM 
maps,  it  was  supposed  that  there  had  been  considerable  change 
in  the  relative  position,  but  this  is  not  confirmed.  From 
meridian  observations  we  have  for  AB : 

1865  I54°7  146*4  Bruxelles 

1875  154-3  M4-9  A.  G.  Ber. 


Piazzi  XVII.  368     (7.;...io.o) 
R.  A.  18"  im  7'       Uecl.  +  8°  52' 


1908.192 
.249 
.252 
•  331 


240. 13 
240.13 
240.03 
240.13 


130798 
130.68 
131.24 
131-47 


Eng 
P 


1908.26  240.10  131.09 

These  are  all  the  measures : 

1893.66  239?6o  132" 19  3n 

1908.26  240.10  131.09  4n 

The  former  proper  motion  appears  to  be  too  large : 
Measures      ol'iog    in     193^5 
Stumpe         0.165    in     167.5 
Porter  0.157    in     170.2 

To  make  it  certain  hereafter  that  B  has  no  motion,  I  have 
connected  with  it  a  13  m  star : 

B  and  C 


1908.444 

37°43 

8o"37 

.460 

37-80 

80.46 

•479 

37-53 

80.53 

1908.46 

37-59 

80.45 

T  Herculi*     (Var. . .  10.3) 
R.A.  i8h4ra34'        Decl.  +  31° 


1909.167 
.186 
.227 


321^07 
320.88 
321.18 


67708 
66.80 
67.08 


1909.19 


321.04 


66.99 


The  principal  star  is  variable.  The  early  measures  differ  in 
distance;  probably  unchanged. 

1877.79  32i?oo  66*93  m  Bl 

1879.24  320.78  68.28  in  Bl 


DM  (23°)  3289     (7. 5... 10.8) 

R.A.  18*  I  im  31'       Decl. +  23°  21' 

A  and  B 


1908.403 
.422 

.425 

3°38 

3-20 

3-68 

128*91 
129.08 
129.30 

1908.42 

3-42 

129.10 

B  and  C  (11.5) 

1908.403 
.422 

.425 

246?o 
246.3 
246.3 

18*00 
17.82 
17.82 

1908.42 

246.2 

17.88 

The  only  other  measures  are: 

1877.72               3 
1879-27               3 

°77           130*62 
.49           129.19 

in 
in 

Bl 
Bl 


5-2 


Burnham:   Measures  of  Proper  Motion  Stars 


DM  (23°)  3299     (7.0... 9. 3) 
R.  A.  18"  I3ra  8"       Decl.  +  23°  15' 

A  and  B 
1908.40.3  I25?8s  i55"89 


.422 
•  425 


125.63 
125-85 


155-99 
156.20 


1908.42  125.78          156.03 

A  and  a  (n.8) 
1908.422  222?s8 


•  425 


222.50 


38.02 


1908.42  222.54 

The  only  earlier  measure  is : 

1878.50  125^91  156' 


37-8i 


Bl 


109  Herculi*     (4.I...IO.6) 
R.  A.  18"  i8ra  35'        Decl. +  21°  43' 


1909.186 
-304 
-340 


320.50 
320.63 


222.00 
221.50 
221.84 


1909.28 


320.56 


221.78 


We  have  the  following  earlier  measures  of  the  small  star : 
1854.70  32O?70  204"8o  in  O2 

1868.55  320.95  208.81  in  OS 

1883.54  320.52  213.79  2n  H2 

The  several  positions  give  for  the  corrected  proper  motion 
of  109  Herculis: 

o''3i4    in     I37?6 

Some  of  the  prior  values  are: 

Auwers         o''3io  in  I44?8 

Newcomb     0.325  in  143.6 

Boss  0.326  in  143.6 


•/.  Draconi*     (3.8...I2.O) 
R.  A.  18"  23™  12'        Decl.  +  72°  41' 

A  and  B 

1908.252  i8?55  I49"i9 

.266  18.60  148.94 

.370  19.02  149-34 

.383  18.88  149.41 

1908.32      18.76  149.22 

B  and  C  (13. 5) 


1908.383 
.422 
.425 


301.2 
302.8 


10.05 

10.20 


1908.41           301.5  10.18 
comparison  we  have: 

I879-33             26?5o           I44':6i  2n           fj' 

1908.32             18.76           149.22  4n            p 

These  positions  give  for  the  proper  motion  of  %  Draconis: 
0^704    in     I26?6 


From  meridian  observations: 

Auwers  0*642    in  I26?6 

Groombridge       0.653    m  I25-6 

Newcomb  0.643    in  126.1 

Boss  0.638    in  125.4 

There  are  no  other  measures  of  BC. 


Oxford  (Z  26°)  50932     (12.4) 
R.  A.  18"  30"  26?9i        Decl.  +  26°  10'  31?! 

Place  for  1900  from  a  plate  of  the  Oxford  Astrographic 
Catalogue  taken  1907.54.    The  proper  motion  is  given: 

o"i7o    in     io8?s 
A  and  B  (11.9. . .12.4) 
1910.414  48^70  6o"52 

.436  48.70  60.14 

1910.42  48.70  60.33 

A  and  C  (12.4) 

1910.414  37^3  81^92 

.436  37-13  81.88 


1910.42  37.18  81.90 

Oxford  50932  and  50936 
1910 . 41       A  R.  A.  +  42?  24       A  Decl.  +  7^ 
1907-54 


P 
Oxf 


42-35  7-8 

As  these  two  stars  are  supposed  to  be  moving  in  nearly 
opposite  directions,  the  difference  in  declination  should  in- 
crease about  o''3  per  year. 


Oxford  (Z  26°)  50936     (10.1) 
R.  A.    18"  31™  9?26        Decl.  +  26°  10'  38*9 

This  is  DM  (26°)  3302  (9.3).  The  place  given  is  for  1900, 
from  an  astrographic  plate  taken  1907.54.  The  Oxford  proper 
motion,  deduced  from  this  and  an  earlier  plate,  is : 

o''i24    in    36?o 
A  and  B  (9. 3... 9. 8) 

1910.414            341 °65  95"42 

.436  341-62 95.73 

1910.42  34I-63  95-57 

A  and  DM  (26°)  3297  (9.1) 
1910.414  245?40  291*16 

•436  245.17  290.95 

1910.42  245.28  291.05 

The  place  of  A,  derived  from  the  A.  G.  position  of  the  com- 
parison star,  does  not  indicate  any  sensible  proper  motion. 

DM  (6°)  3855     (5.0... 13.3) 
R.A.i8"30m49'        Decl. +  6°  35' 

A  and  B 
1910.586  321 ?6  26*46 


-589 
-605 


322.3 
323.6 


26.93 
26.55 


1910.59 


322.5 


26.65 


53 


Burnham:   Measures  of  Proper  Motion  Stars 


A  and  C  (n.o) 

1910.586  89?22  72739 

.589  88.89  72.22 

.605  89.36  72.52 

1910.59  89.16  72.38 

The  faint  companion  noted  by  Jonckheere.    The  large  star 
has  some  proper  motion : 

Boss    07146    in     I96°6 


DM  (11°)  3534     (8.8...  10.8) 
R.A.  i8"3i"45t       Decl.  +  ii°2i 


1910.299 
-337 
-395 

264?88 
264.78 
264.62 

I327i3 
132.01 

132.19 

1910.34 

264.76 

132.11 

The  prior  measures  are  too  discordant  in  distance  for  any 
inference  with  respect  to  change. 

1876.78           26s?lS           134794  in            Bl 

I879-SS           264.90            132.53  2n            Bl 


Oxford  (Z  26°)  50702     (11.5) 
R.A.  i8>341°4;36       Decl.  +  25°  38' 1376 

Place  (1900)  from  the  Oxford  Astrographic  Catalogue; 
plate  taken  1907.54.  From  a  comparison  of  the  photographic 
positions  the  proper  motion  is  given : 

0^165    in     I92°8 

A  and  B  (n.i..  .10.9) 

1910.471  i63?io     119708 

-473  163.28     118.51 

.400  163.08     118.85 

1910.48      163.15     118.81 

B  and  C  (n.i) 

1910.471  205?7o  64792 

•473  205.58  65.39 

.490  205.62  65.14 

1910.48  205.63  65.15 

The  comparison  stars  should  appear  on  both  plates. 

A  and  DM  (25°)  3581  (8.4) 
1910.47       AR.  A.  —  I3o?46       ADecl. +  so72o 


3  Aquila*     (5.0..  .13.1) 
R.  A.  18"  36™  59'       Decl.  —  8°  24' 

A  and  C 
1910.605  I95?46  37"i6 


.608 
.644_ 
1910.62 


194.03 
195-17 


37-84 
37-77 


194.89 


37.59 


Noted  by  Jonckheere.     There  is  a  nearer  and  fainter  sta 
14-  5m: 

1910.608  97?3  13758 

The  proper  motion  of  3  Aquilac,  if  any,  is  very  uncertain  : 
Auwers         o7oi8    in    340^8 
Boss  0.022    in      62.6 


DM  (39°)  3505     (6.  5...  9-5) 
R.  A.  18"  39™  17'        Decl.  +  39°  11' 


1910.184 
.206 
.225 


191.77 
I9L49 


6o''34 
60.48 
60.15 


1910.20  I9L55  60.32 

A   sometimes   called   red;    only   reddish   or   yellow.     C   is 

DM  (39°)  3504.    No  evidence  of  proper  motion  in  the  measures 

1877.93  191 "47  6o7io  2n  Bl 


111   Herculi*     (4.  5...  10.5) 
R.  A.  18"  41™  43'        Decl.  +  18°  3' 

A  and  B 
1907.293  245?82  98750 


.312 
•331 


245.55 
245.72 


98.33 
98.67 


1907.31 


1907.293 
.312 
•331 


245.70 

A  and  C  (10.0) 
257?os 
256.38 
256.82 


98.50 


120.56 
120.60 


1907.31      256.75  120.60 

A  and  D  (10.5) 

1007.293     204?o8  I337i4 

.312     263.45  132.60 

•  331     263.47  133-01 


1907.31 


1907.312 
.329 
.331 


263.67 

BandC 
204?s 
294.5 
294.7 


132.92 


3o7o6 
29.85 
29.84 


1907.32 


1907-312 
.329 
.331 


294.6 
CandD 

3I2?3 
312.1 
312.0 


29.92 


19.67 
19.98 


1907.32 


312.1 


19.80 


The  only  other  measures  are: 

AB        1886.76        247?2i  06721  2n 

AC        1886.76        257.73  "8.34  2n 

1894.71        257.52  119.98  2n 

AD        1886.76        264.83  131.19  2n 

1894.78        264.45  132.14  2n 


Eng 
Eng 
Eng 
Eng 
Eng 


54 


Burnham:   Measures  of  Proper  Motion  Stars 


Comparing  these  with  the  recent  positions  we  have  the  proper 
motion  of  the  large  star  from  the  several  companions  : 
AB       R.  A.  +  0^052       Decl.  +  oTisg 
AC                        .060                        .127 
AD                        .066                        .097 

DM  (33°)  3295     (7.1...  12.  6) 
R.  A.  18"  57™  22"        Decl.  +  33°  47' 

1911.162             I77°8                25*71 
.184            178.8                25.44 

4-0.057                 4-0.128 

.200            178.8                25.64 

Hence  the  mean  proper  motion  is: 
o''i4O    in    24?o 

There  is  no  evidence  of  any  relative  change  in  this  group  of 
small  stars.    For  a  verification  of  this  hereafter,  I  have  con- 
nected them  directly. 
The  proper  motion  of  in  Herculis  from  observations  on  the 
meridian  is  given  : 

Auwers           0*127    in    21  ?7 
Newcomb       0.116    in    28.6 
Boss                0.123    in    30.6 
Porter             0.130    in    23.2 

1911.18              178.5                25.60 

Faint  companion  noted  by  Jonckheere  ;  no  other  measures. 
No  proper  motion  found  in  the  star  catalogues. 

R  Aquilae      (Var...II.l) 
R.  A.  19*0™  36'        Decl.  4-  8°  3' 

A  and  B 
1910.397            296?I3              74*35 
.452            296.12              74.42 
•455            296.48              74.57 

e  Aquilae     (4.  3.  ..10.2) 

1910.43              296.24              74.45 

A  and  C  (10.8) 
1910.397            258^85             180*41 
.452            258.83             180.16 
•455            259.08            180.  13 

R.  A.  18"  54™  11"        Decl.  4-  14°  54' 

A  and  B 
1909.304            i86?7o            131*65 
.340            186.65            130.80 
.400            186.85            131.09 

1910.43              258.92             180.23 
Change  doubtful. 
1878.55           294?73           73*51            2n            Bl 
The  more  distant  star  is  DM  (8°)  3968  (9.5).     The  prior 

1909.35              186.73            131-18 

A  and  C  (10.3) 
1909.304            163?  13             148*25 
.340            162.82            148.10 
.400            163.38            147.83 

1877.75           258?78            I78:'93            m            Bl 
1879.33           258.52            180.60            in            Bl 

Lalande  35851      (5.  5...  9.  5) 

1909.35              163.11             148.06 

Band  C 
1009.400            ioo?7i              59*89 
.455             100.80              59.32 
.458            100.58              59.44 

R.  A.  19"  2™  34s       Decl.  4-  1  6°  40' 

1908.192           275?o8            119*62 
.252           274.88            119.96 
.288           275.05            120.31 
•331            274.97            119-52 

1909.44              100.70              59.55 

These  stars  have  been  measured  as  follows  : 
AB        1887.59        i87?25        132^43        2n        Eng 
1894.71        187.35        132.75        2n        Eng 
AC        1887.58        163.67        148.57        in        Eng 

From  the  positions  of  AB  the  proper  motion  of  e  Aquilae  is: 
o"io5    in    22O?9 

The  measures  of  AC  give  substantially  the  same  value,  but 
as  the  early  position  depends  on  a  single  observation,  it  can 
add  nothing  to  the  other,  and  for  the  present  should  be  re- 
jected. 
The   movement   of   the   large   star   has   been   given    from 
meridian  positions  : 
Auwers         o"i03    in    229?4 
Newcomb     o.ioi     in    216.8 

1908.26             275.00            119.93 
B  is  DM  (16°)  3751.    The  measures  are  : 
1893.67           273?22            119*57           2n            Eng 
1908.26           275.00            119-93           4"           P 

The  several  values  of  the  proper  motion  are  : 
Measures             0*257    in     I78?6 
A.  G.  Berlin        0.297    in     171.4 
Porter                  0.314    in     165.7 
Paris                    0.337    m     162.1 

DM  (18°)  4011     (6.  3...  10.  9) 
R.  A.  19"  10™  14"        Decl.  4-  18°  18' 

1909.496            i65?38            i36"96 
.512             165.41             136.60 
•  515             165.30            136.97 

Boss              o.ioo    in    219.6 

1909.51              165.36            136.84 

55 


Burnham:   Measures  of  Proper  Motion  Stars 


The  principal  star,  according  to  A.  G.  Berlin,  has  a  con- 
siderable proper  motion  : 
07,132    in    283?2 

The  measures  point  to  a  much  smaller  value,  if  there  is  any 
motion  at  all. 

26  Aquilae      (S-2...I2.O) 
R.  A.  19"  14"  9'        Decl.  —  5°  38' 

1909.666                    I2?23                  120702 
.703                    12.  60                 120.00 
.706                    12.10                 120.26 

8  Draconit     (3.  3.  ..12.  5) 
R.  A.  19"  12"  30'       Decl.  +  67°  27' 

1007.312            352?os             88^28 
.463            3SI-98             87.87 
•465            351-97             88.10 

1909.69                      12.31                  120.09 

The  small   star  has   not  been   previously  measured.     The 
proper  motion  of  26  Aquilae  is  : 
Auwers           o"o99    in    52^8 
Porter            0.095    in    57-7 
Boss                o.lio    in    69.3 

1907.41             352.00             88.08 

The  only  previous  measure  is  : 
I879-35           354-3               9°"35            in            p" 
As  this  is  on  a  single  night,  and  therefore  subject  to  acci- 

Groombridge  2835     (6  .  5  .  .  .  to) 
R.  A.  19"  18™  51-        Decl.  +  64°  10' 

1009-455            i8i?38            m?oo 
.512            181.21            111.85 
.515            181.30            112.03 

of  the  other  values. 
Measures        o"isi     in    5o?8 
Auwers           0.119    m    49-8 
Newcomb       0.134    in    49.4 
Boss               0.133    in    49.1 

DM  (19°)  3975    (6.  8...  9.3) 
R.  A.  19"  13™  33'        Decl.  +  19°  23' 

1911.302            3i7°75             93*37 
•334            318.27              92.99 
•356            318.17              92.61 

1909.49             181.30            in-  93 

No  other  position  of  the  small  star.    The  proper  motion  of 
the  large  star  is  practically  zero  : 
Groombridge      ol'ois    in    7o?9 

31   Aquilae     (5.  3...  8.7) 
R.  A.  19"  19"  15-       Decl.  +  11°  41' 

AandB 

1907-731            344°74            io6?56 
•750           344-42            106.28 
•772           344-54            106.45 

I9H-33              318.06              92.99 

The  principal  star  said  to  be  variable.    The  smaller  is  DM 
(19°)  3974-    The  proper  motion  of  A,  if  any,  is  very  small  : 
A.  G.  Berlin      01*017    in    3O$?2 

I007-75             344-57            106.43 
B  and  C  (9.7) 
1907-731            254?oo             42^26 
•750           253.72             42.24 
•772           253-47             42-50 

1875           3i8?6          91*8           A.  G.  Berlin 

Oxford  (Z  26°)  SS357     (8.4) 
R.  A.  19'  I3m  44'96       Decl.  +  25°  10'  57^9 

Place  from  the  Oxford  Astrographic  Catalogue  for  1900; 
plate  taken  1907.78.     The  proper  motion  from  photographic 
positions  is  given: 
01*274    in    2O?6 

A  and  DM  (25°)  3783  (9-5) 
1910.299             38?55             SaTig 
•395             38.40             82.28 
•436             38.70             82.47 

1907-75             253.73             42-33 

The  measures  in  this  case  are  sufficient  in  number  of  nights, 
and  in  the  time  interval,  to  give  the  proper  motion  far  more 
accurately  than  by  any  other  method.    For  AB  we  have: 
1852.70               4?os            142757           2n            O2 
1858.08              2.83           138.47           2n           OS 
1865.80               0.48           133.05            in            O2 
I877-58           356.82            124.72           2n            O2 
1907-75           344-57            106.43           3n            0 

B  is  DM  (11°)  3834,  and  has  a  small  proper  motion.    The 
measures  of  AB  give  for  the  apparent  motion  of  the  principal 
star: 
oTo86    in    43?4 

The  measures  of  BC  are  : 

1910.38               38.55             82.31 

A  is  DM  (25°)  3780  (8.0).    The  comparison  star  not  in  A.  (;. 
and  no  accurate  place  found  elsewhere.    The  rough  DM  posi- 
tions give,  54°  :  120". 

1852.70          247?27            42^59          2n           O2 
1858.08           248.08             42.25           2n           O2 
1865.80           248.82             42.62            in           O2 
1877.58           249.85             42.20           2n           O2 
1907.75           253.73             42.33           3n           p 

Burnham:   Measures  of  Proper  Motion  Stars 


Hence  the  proper  motion  of  B  is  : 

o"o8s    in     i62?9 

Therefore  the  real  proper  motion  of  31  Aquilae  is : 
o''947    in    47?9 

This  is  given  from  transit  observations : 

Auwers  o"96>    in    47^7 

Porter  0.974    in    47-9 

Newcomb       0.964    in    49.1 
Boss  0.961     in    49.0 


8   Aquilae      (3.7 . .  .11.2) 
R.  A.  19"  19™  27*        Decl.  +  2°  57' 


1907.291 
.293 
.312 


27o?83 
270.90 
270.30 


109.39 
108.62 
108.57 


1907.30  270.67  108.86 

:  only  prior  measure  which  can  be  used  for  comparison  is : 
I879-3S  271^85  ioi:'33  2n  p" 

Hence  the  proper  motion  of  the  large  star  is : 
Measures  o"28o  in  75?2 
Auwers  0.245  in  69.2 

Newcomb       0.264    in    72.3 
Boss  0.265    in    73.1 


DM  (1°)  4004     (7. 8... 10. 9) 
R.  A.  19"  2im  48'        Decl. +  1°  56' 


1909.304 

•  342 

•  378 


253.10 
253.72 

253-45 


115 "70 
115.02 

115-23 


1909.34 


253-42 


115-32 


proper  motion  has  been  assigned  to  this  star,  and  the 
measures  show  no  change. 

1879.06  253^27  ii5"i7  2"  Bl 


DM  (1°)  4021     (7.  i... 10. 9) 
R.  A.  19"  25™  i"        Decl.  +  i°  46' 

1909.304  286^65  ui"oo 

.342  286.92  110.74 

.378  286.93  110.91 


1909.34 


286.83 


no.t 


The  first  measures  give  a  larger  distance. 
1879.07  286?40  Ii3"o7  2n 


Bl 


The  apparent  change  may  be  due  to  a  small  proper  motion 
in  A,  or  to  errors  of  observation.  I  do  not  find  that  any  move- 
ment has  been  assigned  to  the  principal  star  from  meridian 
positions.  Another  set  of  measures  at  some  later  time  will 
show  whether  or  not  the  change  is  real.  It  is  not  probable 


hat  B  has  any  motion.     To  determine  this  hereafter   by   a 
single  measure,  I  have  connected  a  third  star  11.2  m: 


B  and  C  (11.2) 
1909.381  215^20 

.438  215.03 


75.95 


1909.41 


215.11 


75.83 


Cygni  176     (6. 5...  14. 5) 
R.  A.  19"  26™  26'        Decl.  +  35°  59' 

A  and  B 
1911.184  28?  5  22*42 


.241 


30.5 


22.46 


1911.21  29.5  22.44 

A  and  C (13.7) 

1911.184  I59?2  27^56 

.200  160.1  27.69 

.241  158.5  27.83 


1911.21 


159-3 


27.69 


No  other  measures.  I  do  not  find  that  any  proper  motion  has 
been  given  the  large  star.  The  faint  companions  were  detected 
by  Jonckheere. 


DM  (7°)  4124     (9.0... 12. 4) 
R.  A.  19"  27-"  14'        Decl.  +  7°  9' 

A  and  B 

1910.395  249?!  8?44 

•397  252.3  8.65 

.452  254.2  8.52 


1910.41  251.9 

A  and  C  (n.i) 
1910.395     2OO?25 
.397     200.07 
.452     200.33 


8.54 


90.57 
90.34 
90.31 


1910.41 


200.22 


90.41 


This  small  star,  which  is  70*  preceding  n  Aquilae,  is  given  a 
proper  motion  of  o''3io  in  177^2  by  Battermann.  No  other 
measures. 


Lalande  37093      (9.0. ..II. 3) 
R.  A.  19"  29™  36"        Decl.  —  o°  30' 


1909.570 
.589 
•  592 


257.98 
258.23 


112.81 
113-32 


1909-58 


258.24 


113-04 


No  other  measures  of  the  small  star. 

The    following    proper    motions    are    from    the    meridian 
positions : 

Paris  o?4O9    in     184^2 

Porter  0.340    in     193.5 


57 


Burnham:   Measures  of  Proper  Motion  Stars 


Lalande  37110     (8.O.. 
R.  A.  19"  29™  52'       Decl. 

1909.551                228?30 

.570           228.15 
.589           228.45 

.12.0) 
-o°9' 

109.24 
108.93 

1909-57     228.30    109.08 

No  other  measures.    The  proper  motion  of  the  principal  star 
is  given  from  meridian  positions : 

Paris  0^423    in     i8o?o 

Porter          0.370    in    188.2 


Lalande  37111      (7. 2. ..11.7) 

R.  A.  19*  29™  52'        Decl.  —  o°  i' 

1909.551  26s?32  67:77 


A  is  reddish  and  variable,  7  m  to  13  m.  At  the  time  of  these 
measures  the  magnitude  was  about  10.7.  These  stars  are 
respectively  DM  (49°)  3064  and  3065,  and  closely  sf  9  Cygni. 

The  micrometer  positions  are  not  accordant  in  distance,  but 
probably  without  change. 

1876.70  H?22  91^79  in  Bl 

1879.25  13.45  90.77  m  Bl 

1881  12.7  90.3  A.  G.  Bonn 

The  proper  motion  of  R  Cygni  is  unknown  from  the  cata- 
logue positions : 

Groombridge       o"oi8    in     I44?6 
Boss  0.014    in    218.3 


•  570 
.589 


265.88 
265.72 


67.72 
67.47 


1909.57  265.64  67.65 

I  do  not  find  any  proper  motion  assigned  to  this  star. 

I  Aquila*      (4. 5...  13. 2) 

R.  A.  19"  30™  31 '        Decl.  —  i  °  33' 

i6i?3 
161.1 
160.8 


1910.570 
.586 
.589 


47.00 
47.10 
46.93 


1910.58  161.1  47.01 

The  principal  star  appears  from  the  meridian  observations 
to  have  no  sensible  proper  motion : 

Auwers         oToi2    in  244?5 

Boss  0.018    in  194.8 


Aquilae  140      (6. 0... 14.0) 
R.  A.  19"  31"'  13'        Decl.  +  11°  o' 

A  and  B 
1910.570  s8?8  16^72 


.589 


55-7 


17.78 


1910.58  57.2  17.25 

A  and  C  (13.2) 

1910.570  3i5?p  2o!'io 

.586  314.7  20.10 

•  589  3I5.7 20.29 

1910.58  315.4  20.16 

Small   stars   detected   by  Jonckheere.  No   proper  motion 
found  for  the  large  star. 


R  Cygni     (Var...9.7) 

R.  A.  19' 33"  36'       Decl.  +  49°  56' 

1009.266  14? 15  9o"6o 

.342  13.69  90.93 

•381  13.00  90.86 


1909-33 


13-91 


90.80 


a  Sagittae      (4.0..  .12.8) 
R.  A.  19"  34ra  44s        Decl.  +  17°  44' 

I79°8 
180.4 
179-8 


1910.570 
.586 
.589 


33-24 
32.78 
32.86 


1910.58  180.0  32.96 

Noted  by  Jonckheere.     There  is  a  14. 5m  star,  249° :  35'.'8. 
The  proper  motion  of  a  Sagittae  is  small  and  uncertain : 
Auwers         0^012    in     i8o?o 
Boss  0.036    in     153.8 


DM  (32°)  3522     (8.O...IO.8) 

R.  A.  19"  36™  24'        Decl.  +  32°  20' 

A  and  B 


1909.342 

2I2?52 

70:61 

.381 

212.87 

70.02 

.400 

212.85 

70.71 

1909-37 

212.75 

70.45 

A  and  C  (ii.i) 

1909.342 

48?95 

82:69 

.381 

48.97 

82.64 

.400 

49-05 

82.84 

1909-37  48.99 

A  and  D (10.7) 
1909.381  268?63 

.400  268.80 

1909.39 


82.72 

93"58 
93-90 


268.71         93.74 

Probably  unchanged.  The  principal  star  is  reddish. 

AB          1878.65  2i2?57         71:46  3n          Bl 

AC          1878.81           49.38         84.22  in  Bl 

1879.39           47-93         82.64  in  Bl 

AD          1878.68  268.37         93-71  3n          Bl 

Piazzi  XIX.  230     (5. 6... II. 8) 
R.  A.  19"  36™  43'        Decl.  —  15°  45' 

1910.605  I28?90  81^84 

.608  128.60  81.77 

.627  129.12  81.70 


1910.61 


81.77 


Burnham:   Measures  of  Proper  Motion  Stars 


No  other  measures.    The  proper  motion  is  given: 
Boss       0:236    in     I4O?5 
Porter    0.227     in     143.3 


Groombridge  2909      (5. 5.  ..12. 2) 
R.  A.  19"  37m  8"        Decl.  +  45°  14' 


1911-509 
.526 
•529 


I43°8o 
144-iS 
144.47 


85-02 
85.17 


1911.52  144.14  84.84 

No  other  measures.    The  proper  motion  is  given : 

o"i32    in    45?  i 


Groombridge 
Boss 


0.142 


in 
in 


42.4 


Groombridge  2914  and  2915      (8. 2... 8. 2) 
R.  A.  19"  38™  19'        Decl.  +  39°  43' 


1909.266 

.340 
.342 

164*65 
164.85 

164.82 

102:44 
101.91 
101.08 

1909.31 

164.77 

102.  I  I 

The  motion  from  meridian  observations  is  very  doubtful : 
Auwers         o"oo8    in    3I5?S 
Newcomb     o.on     in     107.2 
Boss  0.014    in    106.8 


Lalande  37626      (7. 2... 9. 5) 
R.  A.  19"  41™  27'        Decl. +  0°  48' 

A  and  B 
1908.383  I20?o8  101:50 


.422 
.441 

•444 


120.83 
120.70 
120.63 


101.28 
100.92 

101.64 


1908.42 


120.78 


B  and  C(ii.o) 
1908.422     I95?6o 
.441     195.25 
•444     195-53 


101.33 


30:72 
30.72 
30.77 


1908.43              I95-46  30.74 
For  comparison  we  have: 

1893.65           I23?03            I02:'o4  an 

1908.42            120.78           101.33  4n 


Eng 
P 


•  proper  motions  of  these  stars  are  given  in  the  Groom- 
bridge  catalogue: 

No.  2914    0:047    in    291  ?2 
No.  2915    0.044    in    217.2 

There  are  no  other  direct  measures.  The  following  approxi- 
mate places  are  from  meridian  observations : 

1813            i&4?6             98:8  Groombridge 

1825           163.5           100.5  Weisse 

1846           164.5             99.0  Radcliffe 

1880           164.3            101.8  A.G.Lund 

1891            163.8            101.9  Gr.  lo-year 

It  is  evident  that  there  has  been  very  little  if  any  relative 
change,  and  that  the  proper  motions  are  probably  identical.  One 
or  both  of  the  values  given  above  must  be  in  error.  It  will  be 
noticed  that  the  motions  in  declination  are  in  opposite  direc- 
tions, and  therefore  the  distance  of  the  components  should  in- 
crease annually  nearly  o''os. 


*;  Aquilae     (3.7...n.o) 
R.  A.  19"  40™  33'        Decl.  +  10°  19' 


1907.714 
.731 
.750 

257?43 
257.83 
257.67 

I33"i3 
132.61 

132.45 

1907.73 

257.64 

132.73 

For  comparison  there  is  only  this : 

1879.42  257^70  132:58  2n  f5s 

It  is  evident  that  the  proper  motion  of  the  large  star,  if  any 
at  all,  is  much  less  than  the  unavoidable  errors  of  positions 
with  the  micrometer,  as  well  as  the  meridian  circle;  and  that 
only  from  direct  measures,  separated  by  long  intervals  of  time, 
can  any  relative  motion  be  certainly  shown. 


There  are  no  other  measures  of  C.  B  is  DM  (o°)  4215.  The 
measures  of  AB  give  for  the  proper  motion  of  the  principal 
star: 

0:275    in    201 ?8 

This  has  been  given  from  meridian  positions : 
Stumpe         0:291     in    2o6?6 
Porter  0.228    in    200.8 

A.  G.  Nico.    0.238    in     180.0 
Paris  0.233    in     180.0 


o  Aquilae     (5.3..  .12.8) 
R.  A.  19"  45m  17s        Decl. +  10°  7' 

1910.570  222?7  22:69 

.586  221.3  22.93 

.589  222.6  23.20 


1910.58 


222.2 


22.94 


This  companion  was  noted  by  Jonckheere.    There  is  also  a 
13.5  m  star,  i6i?5:2O?5. 
The  proper  motion  of  o  Aquilae  is  given : 

Auwers         0*262    in     124^6 

Boss  0.273    in     122. o 

Porter  0.260    in     122.6 


y.Cygni     (Var...io.8) 
R.  A.  19*  45m  57'       Decl.  +  32°  37' 


1909.342 
.381 

.400 

254°32 
254-67 
254.52 

158:49 
157.89 
157.63 

1909.37 

254-50 

158.00 

59 


Burnham:   Measures  of  Proper  Motion  Stars 


Bl 

Bl 


The  principal  star,  DM  (32°)  3593,  is  variable,  5  m  to  13.5  m. 
The  former  measures   disagree  in  distance,  and  therefore 
change  is  uncertain. 

1880.32  254?45  i6o"i8  in 

1881.78          254.23  159.11  in 

The  variable  has  a  small  proper  motion : 
Boss      0:093    in    234?5 

PJazzi  XIX.  306     (6.5. .  .12.0) 
R.  A.  19'  46"  26'        Decl.  +  1 1  °  20' 


I009-SSI 
•  570 
.589 


I59°9° 
I59-98 
159.76 


94-34 
93.83 


1909-57 


159.88 


93-88 


Several  faint  stars  nearer  than  that  measured.     No  other 
observations.    The  proper  motion  is  given: 
Paris          0*470    in    219:0 
Porter       0.481     in    229.9 


Groombridge  2961      (8.O...II.I) 
R.  A.  I9»  48™  46'       Ded.  +  38°  27' 


1909.340 
•  342 
.381 


313.75 
313.32 


43:76 
43-70 
43.62 


1909-35 


3I3-55 


43.69 


No  other  measures.    The  proper  motion  of  the  principal  star 
is  given : 

Groombridge       0:321    in    357?o 
Porter  0.358    in    354.9 

Gr.  lo-ycar         0.350    in    360.0 


DM  (43°)  3425     (8.2.  ..11.2) 
R.  A.  19"  53™  20'        Decl.  +  43°  56' 


1909.342 
.381 
.400 


i6?03 
15.97 
16.28 


56T4I 
56.29 
56.03 


1909-37 


16.09 


56.24 


The  principal  star  is  red;  erroneously  called  (43°)  3422  in  Bl. 
The  early  positions  are  discordant  in  distance;  probably  un- 
changed. 

1876.80  is°76  56:80  in  Bl 

1880.26  16.03  55-86  in  Bl 


15  Sagittae     (6.O. .  .8.8) 
R.  A.  19'  58m  43'        Decl.  +  16°  45' 

A  and  B 
1908.326  274?so  194:27 


.383 
.403 

1908.37 


274.82 
274-93 
274.78 


194-08 
194-12 

194.16 


A  and  C  (7.0) 

1908.326     3i8?o7  203:25 

•383     318.48  203.14 

.403     318.48  203.39 


Eng 
Eng 


1908.37  3i8.34  203.26 

C  is  Bradley  2567,  and  B  is  DM  (16°)  4117. 

The  only  direct  measures  are : 

AB        1886.78        272?4i        201:42        2n 
AC        1886.78        315.04        202.80       2n 

From  the  two  comparison  stars  the  apparent  motion  of  A  is : 
From  AB        0:508    in    225?3 
From  AC        0.542    in    224.4 

The  proper  motion  of  15  Sagittae  has  been  given  from 
meridian  positions : 

Auwers  0:571     in  228?4 

Porter  0.573    in  225.6 

Boss  0.577    in  224.4 

This  would  seem  to  be  a  little  too  large,  as  it  is  not  probable 
that  the  small  star  B  has  any  sensible  motion. 

The  7  m  star  would  be  expected  to  have  some  movement, 
and  undoubtedly  has,  although  the  amount  is  small,  and  un- 
certain. 

A.  G.  Berlin       o!'ois    in      28?9 
Porter  0.037    m       4-4 

Auwers  0.012    in    330.1 

For  an  independent  determination  of  the  proper  motions  of 
the  two  bright  stars,  and  showing  the  absence  of  change  in  B, 
if  that  is  the  fact,  I  have  connected  each  with  a  small  star. 

A  and  a  (11.7) 

1908.326     320?23  58:'48 

.383     320.88  58.74 

.403     320.53  58.79 


1908.37 

1908.422 

.425 

•  444 

320.55 
B  and  b  (9.2) 

23I?00 

231  .  12 
230.80 

58.67 

183:22 
183.08 
183.25 

1908.43 

1908.326 
.383 
.403 

230.97 
Candc  (11.8) 
i83?6o 
184.05 
'83.93 

183.18 

93:38 
93.85 
93-59 

1908.37 


183.86 


93-45 


DM  (20°)  4417     (8.9... 13. 5) 
R.  A.  19"  59™  48'        Decl.  -f  20°  18' 

A  and  B 
1909-493  246^9  13:05 


.496 


249-5 


13-13 


1909.49  248.2 

A  and  C  (12.1) 
1909.381  I03?8o 

-493  103-87 

.496  103.17 


1909.46 


103.61 


13.09 


59:34 
58.95 
59.28 

59-19 


60 


Burnham:   Measures  of  Proper  Motion  Stars 


A  and  D 

(12.2) 

large  error 

in  declination 

is  obvious. 

If  this  is  assumed  to  be 

1909 

3«i 

95! 

77 

75 

".99 

i',  the  A.  G 

position  with 

the  measures  would 

give  the  proper 

493 

95- 

53 

75 

.69 

motion  : 

406 

95- 

60 

75 

.68 

°" 

336     in    42 

'8 

1909 

46 

95- 

63 

75 

•79 

The  principal  star  is  red.     The  only  other  measures  of  AD 
are  too  discordant  for  any  inference  as  to  change 

1879.31  96?57  7§°39  m  Bl 

1879.85  95.18  80.12  in  Bl 


27  Cygni     (5. 6... 13. 8) 

R.  A.  20"  i™  54'        Decl.  +  35°  38' 

A  and  B 


1909.515 
.531 

•534 

64.1 

64.7 

16:21 
16.28 
16.  10 

1909-53 

63.8 

16.20 

A 

and  C  (11.7) 

1909-515 

I54°20 

40:17 

•  531 
•534 

154-47 
I54-83 

40.11 
40.32 

1909-53 

154-50 

40.23 

The  small  stars  have  not  been  seen  before.  Only  a  short 
interval  will  be  required  to  show  whether  or  not  they  are  mov- 
ing with  the  large  star.  The  proper  motion  of  that  is  given : 

Auwers         0:485     in    2io?o 

Paris  0.467     in    209.2 

Porter  0.477    in    208.7 

Boss  0.495    in    207.8 


Groombridge  3042     (6.0... 9. 3) 
R.  A.  20"  3m  4'        Decl.  +  52°  49' 


Piazzi  XX.  23     (7. 2... 9. 2) 
R.  A.  20"  5m  39"        Decl. +  15°  49' 

A  and  B 
1908.425  isi?o8  152:43 


•444 
.460 

•479 

152.18 

I5I-77 
152.00 

151.86 
152.10 
152.73 

1908.45 

151-98 

152.28 

B  and  C  (n.6) 

1908.425 

27o?48 

63"92 

.460 

270.68 

63.63 

•479 

270-55 

63.72 

1908.45 

270.57 

63.76 

1908.370 

I24?95 

I7o'.'53 

•  383 

124.79 

170.80 

•403 

124.85 

169.73 

.406 

124.80 

170.46 

1908.39 

124.85 

170.38 

are 


small  star  is  DM  (52°)  2626.    This  is  given  in  the  cata- 
)gues  O.  Arg.  N.  and  A.  G.  Harvard.    The  direct  measures 
are: 

1893.98  123^7  171:84  3n  Eng 

1908.39  124.85  170.38  4n  p 

From  these  positions  the  proper  motion  of  Groombridge  3042 
would  be : 

The  two  positions  of  A  in  the  first  catalogue  referred  to 
differ  too  much  to  be  used  in  this  connection.    In  the  other  the 


Measures 

0:342    in    SI?Q 

Stumpe 

0.304    in    40.3 

Porter 

0.307    in    39.6 

Groombridge 

0.334    in    40.0 

A.  G.  Har. 

0.347    in    43.3 

Boss 

0.334    in    41.0 

B  is  DM  (15°)  4075.    No  other  measures  of  C. 

1893.80  I52°73  I44''o2  2n  Eng 

1908.45  151-98  152.28  4n  p 

These  positions  give  for  the  proper  motion  of  the  principal 
star: 

0:582    in    3I9?4 

The  correction  to  the  former  values  from  meridian  observa- 
tions is  small. 

Stumpe  0:587    in    307  ?4 

A.  G.  Berlin        0.580    in    313.4 
Porter  0.596    in    312.6 


I  Capricorn!     (5.8...I2.O) 
R.  A.  20"  5™  45'        Decl.  —  12°  58' 

1909.666  258?97  71:57 

.703  258.62  71.48 

.706  258.87  71.81 


1909.69 


258.82 


71.62 


No  other  measures.    The  proper  motion  is  given  : 
Auwers         0:239    in     I38T8 
Porter  0.259    in     138.6 

Newcomb     0.253    in     138.3 
Boss  0.269    in     135.9 


DM  (47°)  3031     (9. 4... 9. 5) 
R.  A.20h5m5i"        Decl. +  47°  31' 


1909.342 
.476 
•493 


139.42 
139-45 
139-85 


145.15 
145.11 

I45-65 


1909.44  139.57  145.39 

A  is  reddish.    Apparently  without  any  proper  motion. 
1879.05  I39°68  145^05  2n        Bl 


61 


Burnham:   Measures  of  Proper  Motion  Stars 


DM  (35°)  4013     (8.0...  10.  3) 
R.  A.  20"  6™  27'       Decl.  +  35°  46' 


1909.515 
.531 


I09?8o 
109.90 


53*35 
53.06 


1909.52  109.85  53.20 

The  other  measures  are  discordant  in  distance: 
1878.90  no?o8  53*94  in 

1879.40  109.95  52.56  in 


DM  (38')  3957     (8.  2...  7.  2) 
R.  A.  20"  9™  2*        Dccl.  +  38°  22' 

A  and  B 
1909.493  354°8o  131*92 


Bl 

Bl 


.515 
.531 

355.07 
355.15 

132.40 
132.13 

1909.51 

355-01 

132.15 

A  and  C  (9.3) 

1909.493 

io6!o7 

155*50 

.515 

106.10 

155-73 

.531 

106.10 

155.91 

1909.51 

106.09 

I55.7I 

The  primary  is  a  red  star;  the  other  is  DM  (38°)  3956.    For 
these  stars  we  have  the  following  positions  : 

1879-15  355°24  132765  2n  Bl 

1881  354-8  133.0  A.  G.  Lund. 

There  is  an  obvious  error  in  one  of  the  former  distances  of 
the  small  star  : 

1878.90           io6?02           156*99  in           Bl 

1879.40           106.52           155.92  in           Bl 


DM  (36°)  3956     (8.0. .  .9.8) 
R.  A.  20"  lo1"  2-       Decl.  +  36°  i 


1909.493 
.496 

.415 


»7°87 
117.80 
"7-73 


113*12 
"3-74 
114.03 


1909.47  117.80  113-63 

This  star  is  8'  s  of  29  Cygni.    It  appears  to  have  no  sensible 
proper  motion. 

1878.16  II7?69  113763  2n  Bl 


A  and  C  (10.0) 

1908.266  22?73  222"6o 

.383  23.08  223.09 

.403  23.22  222.82 

1908.35  23.01  222.84 

A  and  a  (12.2) 

1908.266  341 "32  38*70 

-383  34I.83  38.93 

.403  34i.i8  38.91 

1908.35  341-44  38.85 

B  and  D  (10.6) 

1908.422  I20?20  217*15 

.425  120.25  217.22 


1908.42 


120.22 


2I7.I8 


29  Cygni     (5.0... 7.0) 
R.  A.  20*  10"  2'       Decl.  +  36°  26' 

A  and  B 
1908.266  I53°05  212*50 


•  383 
•403 

1908.35 


153.52 
153-25 

I53-27 


212.51 

212.35 

212.45 


The  proper  motion  of  the  principal  star  is  given  from  me- 
ridian observations: 

Auwers  o"io6    in     n?8 

Porter  0.106    in    33.9 

Boss  0.094    in    43.8 

B  is  Bradley  2599  with  a  small  proper  motion : 
Auwers        0*044    in    334^2 

For  comparison  we  have  the  following  with  the  micrometer : 

A  and  B 

1887.82  153^07  2i2:'o4  in  Eng 

1908.35  153.27  212.45  3"  P 

A  and  C 

1887.82  23^40  225*16  in  Eng 

1894.84  23.22           225.00  in  Eng 
1908.35             23.01            222.84  3n  P 

B  and  D 

1894.85  I20?42  2i6"54  in  Eng 
1908.42            120.22           217.18           2n           P 

The  measures  of  AB  show  no  sensible  change.  A  mean  of 
the  first  two  positions  of  AC  compared  with  the  last  gives  for 
the  apparent  movement  of  A: 

0*148    in    so?6 

It  is  not  likely  that  a  star  of  this  magnitude  has  any  sensible 
motion,  and  the  larger  value  may  be  due  to  errors  in  the 
measures.  The  early  positions  are  all  derived  from  single 
nights,  and  therefore  subject  to  some  question.  All  these  stars 
should  be  re-measured  after  a  suitable  interval.  There  are 
many  stars  in  the  field;  I  have  measured  one  of  the  nearest  to  , 


Groombridge  3127      (8.0... 9. 5) 

R.  A.  20"  13™  28"       Decl.  +  49°  55' 

A  and  B 
1908.370  02?03  57*24 


.383 

91.68 

57.23 

.482 

91.77 

57.07 

.518 

92.02 

57-12 

1908.44 

91.88 

57.16 

Burnham:   Measures  of  Proper  Motion  Stars 


A  and  C  (9. 

7) 

U  Cygni         (8.7... 

8.8) 

1908.370 

i73°73 

107  ''04 

R.  A.  20"  15™ 

53s       Decl. 

+  47°  3i' 

•  383 

173-52 

106.89 

.482 

173-17 

IO7  .  22 

1909.400 

5i°55 

63''5i 

.518 

I73.25 

106.96 

.438 

51-53 

63.78 

1908.44 

173.42 

107.03 

.470 

S'.S" 

63.53 

1909.44 

51-49 

63.61 

A  and  D  (9 

7) 

These  stars  are  DM  (47° 

)  3077  and  3078  ;  the  first  is  variable 

1908.370 

333°  15 

i  18*04 

from  about  7  m  to  10  m.    There  seems  to  be  no  sensible  proper 

•  383 

332.95 

117.78 

motion  in  either. 

.482 
•  5i8 

333-10 
332.58 

117.84 
118.09 

1875                 52?o 
1878.63           51-57 

63.55 

A.  G.  Bonn 
2n            Bl 

1908.44 

332.94 

117.94 

A  and  E  (9 

7) 

1908.370 

I28?75 

155783 

DM  (36°) 

4025     (9.3 

.-9-5) 

.383 

128.53 

155.75 

.482 

128.97 

155.88 

R.  A.  20"  i6m 

50"       Decl. 

+  36°  33' 

.5i8 

128.22 

155.41 

1909.400 

no?6s 

I25"95 

1908.44 

128.62 

I55.72 

•  493 

110.43 

125.58 

\ 

.496 

no.  60 

125.87 

B  and  6  (12 

.0) 

1909.46 

110.56 

125.80 

1908.370 

203?3 

I0'/20 

•  383 

203.5 

10.52 

The  smaller  star  is  DM  (36°)  4028. 

.482 

204-3 

IO.27 

The  only  prior  measures 

are  the  following  : 

.518 

205.0 

10.22 

1880.58           iio?72 

I24':6s 

2n            Bl 

1908.44 

204.0 

10.30 

D  and  d  (n 

-9) 

1908.482 

2I2?70 

86':88 

Piazzi  XX 

.  120     (8.6 

..10.7) 

•  5i8 

212.48 

86.87 

R    A   W  T7m 

29'        Decl 

+  10°  50' 

1908.50 

212.59 

86.87 

A  and  B 

The  only  other  measures  are  : 

1908.422 

83?94 

52"39 

AB        1892.76 

96?  10 

54?45        2n        Eng                                               .425 

84.30 

52.23 

AC        1892.76 

175-82 

109.95        2n        Eng                                               -441 

84.25 

52.05 

AD        1892.76 

33L45 

117.71        2n        Eng                                       1908.43 

84.16 

52.22 

AE        1892.76 

130.88 

155.69        in        Eng 

From  these  measures  the  corrected  proper  motion  of  the 
principal  star  is: 


AB 

R.  A.  —  o!'i9i 

Decl.  —  o"249 

AC 

.271 

.213 

AD 

•259 

.103 

AE 

•  253 

.301 

—  0.244  — 0.216 

From  the  mean  result  of  all  the  measures  we  have : 
0^325    in    228^6 

There  seems  to  be  some  error  in  the  measures  of  AD.  It  is 
not  probable  that  the  small  star  has  any  motion.  To  make  this 
certain  hereafter,  I  have  connected  a  faint  star. 

The  proper  motion  of  Groombridge  3127  has  been  given 
from  meridian  positions: 

Greenwich  0*304    in    227^3 

Paris  0.288    in    226.6 

A.  G.  Bonn         0.335    in    230.9 
Porter  0.299    in    228.5 


A  and  C  (10.0) 

1908.422             I02?77  iso"3o 

.425             102.64  150.10 

.441             102.65  149.92 

1908.43              102.69  150.11 

The  other  measures  are : 

AB        1891.80         86?62         so"i9  in 

AC        1891.80        103.88        149.16  2n 


Eng 
Eng 


From  these  positions  the  annual  movement  of  the  principal 
star  is: 

AB        R.  A.  — o"m        Decl.  —  o''  141 
AC  .081  .170 


— 0.096 


-0.155 


The  proper  motion  of  the  principal  star  is  therefore: 
o"i82    in    2ii?8 

From  meridian  observations : 

Stumpe         o"2O4    in    2i7?4 
Porter          0.186    in    221.7 


Burnham:   Measures  of  Proper  Motion  Stars 


DM  (38°)  4063     (8. 9... 12.0) 
R.  A.  20"  19"  24'       Decl.  +  38°  6' 

A  and  B 
1909.400 
•493 
•515 


3I9°75 
319-18 
318.97 


38.60 
38.60 


1009.47  319-30  38.51 

A  and  C  (9.2) 

1909.400  295?88  66:55 

•493  295.97  66.34 

•  S'5  295-83  66.53 

1909.47  295.89  66.47 

C  is  DM  (38°)  4062.  These  stars  are  in  the  cluster,  h  2078 
(=  M  29).  The  only  other  measures  are : 

AB        1879.31        319^2        38:62        in        f!f 
AC        1879.31        295.1        66.27        in        p" 

Evidently  unchanged. 

Oxford  (  Z    26    >  66211      (12.2. .  .13.1) 
R.A.2o'2im5!i6       Decl.  +  26°  32' 2573 

The  place  of  the  larger  star,  for  1900,  is  from  an  Oxford 
astrographic  plate  taken  1904.76.    From  a  comparison  of  this 
with  an  earlier  photograph,  it  appears  that  both  stars  have  a 
proper  motion  which  is  probably  the  same : 
A       0:142    in    200?2 
B       0.135    in    280.7 

A  and  B  (10.8..  .10.9) 

1910.299     232?ss      67:55 

•337     232.63      66.84 

•375     232.47     67.72 

1910.34     232.55      67.37 

B  and  C  (10.8) 

1910.337  232?63  164:42 

•375  232.93  164.03 

•397  232.60  164.27 

1910.37  232.72  164.24 

The  reduced  Oxford  places  give  for  AB,  232:5 : 68To. 

A  and  DM  (26°)  3902  (9.0) 
1910.30  AR.  A. +69:6  A  Decl.  —  74723 

A  and  DM  (26°)  3895  (9-5) 
1910.30  AR.  A.  +  3i'.s  A  Decl.  +  146:82 

A  comparison  of  the  Oxford  and  A.  G.  meridian  positions  of 
these  stars  does  not  indicate  any  sensible  motion  in  A.  Later 
measures  of  BC  will  show  what  the  fact  is. 

DM  (26°)  3897     (8. 2... 9.6) 
R.  A.  20'  21"  34'        Decl.  +  26°  17' 

A  and  B 

1910.337  72°.6o  75^74 

•  375  72.00  75-89 

.397  72.63  75.62 


1910.37 


72.71 


75.65 


The  small   star  is   DM  (26°)  3898.     No   other   micrometer 
measures. 

1875  72?3  76:5  A.  G.  Camb. 

B  has  a  small  companion  not  previously  seen : 

B  and  C  (12.5) 

1910.337     '355-7       2749 
•  397     357-0       2.15 


1910.36 


356.3 


2.32 


Oxford  (  Z  26°)  66226     (10.6) 
R.  A.  20"  25'"  58^20        Decl.  +  26°  30'  40:5 

Place  for  1900,  from  a  plate  of  the  Oxford  Astrographic 
Catalogue  taken  1904.76.  The  photographic  positions  give  the 
proper  motion : 

oI'iSo    in     iQ4?3 

This  is  DM  (26°)  3915  (9.5)  ;  not  in  A.  G.  Camb. 

A  and  B  (9. 5... 13.0) 
1910.455  255?55  22:57 

.471  256.58  22.91 

.473  254.05  22.29 

1910.47  255.39  22.59 

A  and  C  (10.0) 

1910.455  27i?88  io8''i2 

.471  272.20  108.02 

.473  271.65  107.87 

1910.47  271.91  108.00 

A  and  DM  (26°)  3920  (9.4) 

1910.5       AR.  A.  +  08!  4       A  Decl.—  97"5        P 

looo  98.4  100.7       Oxf. — A.  G. 

47  Cygni     (4.8.  ..10.4) 
R.  A.  20"  29"  17'        Decl. +  34°  50' 


1009.438 
.458 
.512 


IOO?5° 
190.42 

100.30 


"7*74 
117-74 
"7-45 


1909.47  190.41  117-64 

The  meridian  observations  give  47  Cygni  no  sensible  proper 

motion,  and  this  is  confirmed  by  the  measures  of  the  small  star: 

1880.30  ioo?52  "7"63  2n  BI 

From  the  catalogues  we  have  : 

Auwers         0:018    in    24O?8 
Boss  0.014    in     100.0 

Oxford  (Z  26°)  66463     (10.2) 
R.  A.  20"  31™  2s!o6       Decl.  +  25°  2'  12:1 

This  is  DM  (24°)  4182  (9.5).  In  nearly  every  case  the 
Oxford  photographic  magnitudes  make  the  small  stars  about 
three-  fourths  of  a  magnitude  too  faint,  as  compared  with  the 
values  assigned  in  visual  observations.  The  place  given  here 


Burnham:   Measures  of  Proper  Motion  Stars 


is  for  1900  from  a  plate  taken   1904.76.     The  photographic 
positions  give  the  proper  motion : 

07228    in    237?7 
With  the  A.  G.  position  the  change  is  smaller  and  uncertain. 

A  and  B  (9.6.. .11.3) 
1910.512  259?62  192700 

.529  260.17  192.21 


1910.52 


259.89 


192.10 


Bradley  2669     (6.8.  ..10. 8) 
R.  A.  20"  34™  7'        Decl.  +  10°  49' 


1908.383 
.422 

.425 

8?35 
8.10 
8.13 

192730 
192.39 
192.31 

Eng 
Eng 

1908.41 
•ison  we  have  : 

8?77 
8.43 

8.19 
194-50 

192.33 

211 
3n 

1886.79 
1894.13 

1908.41  8.19  192.33  3n  P 

These  positions  are  not  entirely  consistent.  Comparing  the 
last  with  a  mean  of  the  first  two,  the  proper  motion  of  the 
large  star  is : 

o7ii4    in    352?2 

The  meridian  observations  give : 

Auwers         07130    in      39^5 
Porter  0.090    in    360.0 


Lalande  39956 
R.  A.  20" 35™  20' 


(6. 5.. .11.6) 
Decl. +19°  30' 


I909.S5I 
•  573 
.589 


24?72 

24-73 

24.42 


98795 
98.94 

98-51 


1909.57  24.62  98.80 

other  measures.    The  proper  motion  has  been  found : 
Paris        07383    in    32^6 
Porter      0.387    in    26.0 

75  Draconis     (5.0.  ..10.5) 

R.  A.  20"  35m  43'        Decl. +  8i°5' 

A  and  B 
1908.383  I3?78  109^58 


.403 
.422 

13.05 
13.48 

109.56 
109.38 

1908.40 

13.44 

109.51 

A  and  C  (6.5) 

1908.383 

284^48 

197793 

.403 

284.45 

197.64 

.422 

284.20 

197-81 

1908.40  284.38  197.79 

No  other  measures  of  B,  and  only  this  of  AC: 
1884.31  28s?27  198742  2n 


The  proper  motion  of  75  Draconis  is  small  and  uncertain : 
Auwers         o7o22    in     105^8 
Boss  0.031     in      65.4 

C  is  Bradley  2701,  and  according  to  Auwers  has  a  proper 
motion  of  07042  in  90°. 


74  Draconic     (6.0... 7. 5) 
R.  A.  20"  36"  20"        Decl.  +  80°  40' 

A  and  B 
1908.252  38?20  214719 


.370 

.383 

38.43 
38.05 

214.44 
214.68 

1908.33 

38.23 

214.44 

B  andC  (10.7) 

1908.252 
.370 

.383 

3o6?23 

306.75 
306.50 

107731 
107.26 
107.21 

1908.33 


306.49 


107.26 


The  relative  motion  should  be  accurately  known  from  these 
measures : 

1851.87  4o!i2  214729  in  O2 

1884.32  39.30  214.93  2n  H2 

1908.33  38.23  214.44  3n  P 

These  positions  give  for  the  apparent  movement  of  the  larger 
star: 

07124    in     I3i?2 

The  proper  motion  of  74  Draconis  is  given  from  meridian 
observations : 

Auwers  0^217    in     16^7 

Groombridge         0.231     in    26.2 
Porter  0.208    in     17.4 

Assuming  the  last  value  to  be  correct,  the  real  proper  motion 
of  the  smaller  star  is : 

o728i     in    353?7 

For  an  independent  determination  of  this  hereafter,  I  have 
connected  a  third  star. 

A  more  recent  determination  of  the  proper  motion  of  A  is : 
Boss       07227    in     i8?3 


S  Delphi™     (Var...8.2) 
R.  A.  20"  37ro  33'        Decl.  +  16°  39' 


1909.304 
.378 
.381 


341.20 
341.46 
341-33 


55792 
55-62 
55.90 


1909-35 


341-33 


55.8i 


These  stars  are  respectively  DM  (16°)  4351  and  4350.  The 
first  is  variable  from  8.5m  to  12  m.  At  the  time  of  these 
measures,  the  components  were  sensibly  equal.  Neither  seems 
to  have  any  proper  motion.  The  measure  of  1879  is  corrected 
for  an  error  of  180°  in  the  angle. 

1870  342°i  577 1  A.  G.  Ber. 

1879.63  341.67  55-88  2n  Bl 


65 


Burnham:   Measures  of  Proper  Motion  Stars 


Oxford  (Z  26°)  68464     (u.i) 
R.  A.  20"  38™  44?97        Decl.  +  26°  27'  2276 

Place  for  1900  from  plate  taken  1904.76  of  the  Oxford 
Astrographic  Catalogue.  The  photographic  positions  indicate 
a  proper  motion  of: 

07307    in    2o6!s 

A  and  B  (10.7.. .11.6) 
1910.452  123^85  61773 

.455  123.65  61.53 


1910.45 


123.75 


61.63 


Oxford  (Z  26°)  67901     (6.6) 
R.  A.  20"  39ra  1:67        Decl.  25°  27'  53^3 

This  is  the  7.5  m  star,  DM  (  (25°)  4347.    The  place  for  1900  is 
from  the  Oxford  Astrographic  Catalogue,  plate  taken  1904.76. 
From  the  photographic  positions  the  proper  motion  is  given : 
o7i55    in    358?o 

A  and  B  (7. 5... 15.0) 
1910.452  228?!  16794 

A  and  C  (13.0) 

1910.436  2o8?47  39"77 

.452  208.10  39-70 

1910.44  208.28  39.73 

A  and  DM  (25°)  4350  (8.9) 


1910.44 
1875 


1910.44 
1875 


AR.  A. +  27:8 
27.9 


A  Decl.  —  8672 
88.1 


A  and  DM  (25°)  4343  (9.  i) 

A  R.  A.  —  31!  4       A  Decl.  +  I23"o 
31-4  124-3 

Cephei  6  (Hev.)      (4.7. .  .9.5) 
R.  A.  20"  42-"  22"       Decl.  +  57°  9' 


A.  G. 


A.G. 


1908.331 
.383 
•  403 


162.90 
162.63 


6876o 
68.84 
68.20 


1908.37  162.64  68.55 

The  small  star  is  DM  (57°)  2241.   The  only  other  measure  is : 
1894.00  164^87  71777  2n  Eng 

These  positions  give  for  the  proper  motion  of  the  large  star : 
07225    in     i69?8 

Both  stars  in  A.  G.    With  the  measures  and  the  meridian 
positions  in  1875,  the  proper  motion  becomes : 
07267    in     16775 

The  motion  in  R.  A.  is  very  small  and  uncertain.    The  other 
values  are: 

Auwers  07251    in    197^6 

Groombridgc       0.256    in     198.8 
Boss  0.241     in     196.2 

Porter  0.268    in    201.3 


Oxford  (Z  26°)  67632     (11.3) 
R.  A.  20*  43m  3o!o2        Decl.  +  24°  56'  44"3 

From  the  Oxford  Astrographic  Catalogue;  place  for  1900 
from  plate  taken  1904.76.    The  proper  motion  is  given : 

o7iss    in     190? I 

A  and  B  (10.7. . .10.9) 
1910.512  38^68  47^09 

.529  40.13  47.04 

1910.52  39-40  47-o6 

A  and  C  (11.2) 


1910.512 
.529 


IOO?25 

100.93 


103:20 
103.28 


1910.52  100.59  103.24 

A  and  D  (10.5) 
1910.512 


•  529 


251.55 
251-50 


i55"37 
155-74 


1910.52  25I-S2  155-55 

All  of  the  comparison  stars  should  show  on  the  plates. 

56  Cygni     (5. 2... II. 2) 
R.  A.  20"  45™  49'        Decl.  +  43°  39' 


1907.312 
•  329 

.348 


45-77 
45-58 


75-39 

75-45 
75-54 


1907-33 


45-67 


75-46 


We  have  the  following  prior  measures : 

1852.63     45?I5      867o3  in 

1883.87     45.42     80.71  in 

I907-33     45-67      75-46  3n 

From  which  the  proper  motion  of  the  large  star  is : 
Measures        o7i94    in    41^5 
Auwers          0.171    in    48.8 
Boss  0.178    in    44.0 

Porter  0.180    in    45.9 


DM  (32°)  3980        (6.o...io.o) 
R.  A.  20"  49™  2'       Decl.  +  32°  59' 


OS 
H2 
P 


1909.438 
.458 

•  493 

58?33 
58.30 
58.72 

187747 
187.36 
187.59 

1909.46 

Apparently  unchanged. 
1880.30             58?05 

58.45 
187707 

187.47 
2n 

Bl 

It  is  evident  from  this,  and  from  the  meridian  positions,  that 
the  proper  motion,  if  any,  is  small. 

Boss      07042    in    349?6 
66 


Burnham:   Measures  of  Proper  Motion  Stars 


DM  (61°)  2068     (8.  4...  8.  8) 
R.  A.2o"som5is        Decl.  +  6i°43' 

A  and  B 
1910.493            263?i2              8s':42 
.509            263.03              85.34 
.512            262.78              85.20 

Although  the  first  position  of  CD  depends  upon  a  single 
measure,  it  is  safe  to  assume  that  there  is  no  sensible  change, 
and  that  D  has  no  proper  motion. 
The  measures  of  AC  give  for  the  proper  motion  of  Lalande 
40604: 

o':349    in    42?3 

The  movement  from  meridian  observations  seems  to  be  too 
small  : 
A.  G.  Bonn    0^273    in    41  ?s 
Porter             0.273     in    34.5 

Both  stars  are  given  in  A.  G.  Bonn  for  1877,  and  the  relative 
positions  agree  with  the  subsequent  direct  measures. 
If  the  first  position  of  AB  has  only  the  ordinary  errors  of 
observation,  we  have  at  last  a  small  star  with  a  sensible  proper 
motion.    These  measures  give  for  the  motion  of  A  : 
o'.'Sil     in    47?4 

This  seems  obviously  too  large.     To  determine  hereafter 
whether  B  has  any  real  motion,  I  have  measured  BC  directly. 
The  measures  of  AB  and  AC  give  : 
BC              1908.40              69?55              86'/i2 

Repeating  the  measures  of  BC  and  CD  after  a  short  interval, 
will  show  at  once  whether  or  not  there  is  any  real  change  in  B. 

[Since  the  foregoing  was  written,  I  have  received  from  Prof. 
Donner  the  following  measure  from  the  astrographic  plates  : 
1893.77           354°6            n6"40           2n           Donner 

It  will  be  observed  that  a  comparison  of  this  with  the  recent 
measures  gives  a  smaller  value  for  the  apparent  motion  of  A  : 

o:'455    in    54-4 

Further  measures  will  soon  determine  whether  or  not  the 
small  star  has  any  motion.] 

18  Delphini      (5.6.  .  .IO.2) 
R.  A.  20"  52™  39'        Decl.  +  10°  23' 

A  and  B 
1907.293            i62?35             i97"74 
.312             161.93             I97.27 
.348            161.83             197-79 

1910.50              262.98              85.32 

B  is  DM  (61°)  2067  with  magnitude  8.8.    Battermann  gives 
the  proper  motion  of  2068: 
o"76    in     180° 

For  comparison  we  have  from  meridian  positions  : 
1875           247°3           98"7           A.  G.  Hels. 

Assuming  that  B  has  no  movement,  the  proper  motion  of 
A  is: 
o"8o    in     192^9 

Kit  is  highly  probable  that  the  smaller  star  is  practically  fixed 
space  ;  in  this  interest  I  have  connected  a  faint  star  : 

B  and  C  (13) 
1910.509            293?  10              6o?77 
•512            293-53              60.51 

1910.51              293.31              60.64 

Lalande  40604     (7.8...IO.O) 
R.  A.  20"  52m  24'        Decl.  +  42°  26' 

A  and  B 

1908.383            351  °83             "3''26 
.406            351-65             113-09 
.422            351.58            113.21 

1908.40              351-69            II3-I9 

A  and  C  (9.0) 
1908.383              24?62             156*19 
.406              24.25             155-91 
.422              24.17             I55.9I 

1908.40                24.35             156.00 

C  and  D  (10.2) 

1908.383            356?6s              02:'4o 
.406            356.25              92.50 
.422            356.13              92.51 

1907.32              162.04            197.60 

B  and  C  (ii.o) 
1907.312            222?9                66"99 
.348            223.3                67.32 

1908.40              356.34              92-47 

B  and  C 
1908.422             69^43             86':  10 
.482             69.43             86.00 

1907.33              223.1                67.15 

We  have  for  AB  : 
1886.88            i62?so           I97"45           2n            Eng 
1893.86            162.50            197.26           2n           Eng 
1907.32            162.04            197.60           3n           P 

It  is  evident  there  has  been  no  change,  and  that  the  proper 
motion,  whatever  it  is,  is  common  to  both  stars.    For  future 
use,  I  have  measured  a  third  star. 
Auwers         0^097    in    235  ?4 
Boss              0.084    >n    230.8 

1908.45               69.43             86.05 

For  comparison  we  have  the  following  measures  : 
AB        1893.98        354°6s        117*50        2n        Eng 
1908.40        351-69        "3-19        3n        P 
AC        1894.01          25.00        i6o.il        2n        Eng 
1908.40         24.35        156.00        3n        p 
CD        1893.98        356.08         93.14        in        Eng 
1908.40        356.34          92.47        3"        P 

67 


Burnham:   Measures  of  Proper  Motion  Stars 


DM  (40°)  4373     (7.  7...  10.8) 
R.  A.  20"  53™  59'        Decl.+40°54' 

1909.493            3Si?90            168:52 
.496            351.90            168.38 
•512            351-77            168.76 

DM  (33°)  4117     (9.  2...  12.  9) 
R.  A.  20"  55'"  50'        Decl.  +  33°  26' 

A  and  B 
1910.512            204?o                21:13 
.529            203.8                20.75 

1909.50              351.86            168.55 

.531            203.0                20.82 

Very  little  if  any  change. 
1880.  16           352?o8           167:89           an           Bl 

1910.52              203.6                20.90 

A  and  C  (n.6) 
1910.512                6?5                87:16 
.529                7-4                87.21 
.531               6.8               87.38 

Croombridge  3357     (6.5.  .  .8.0) 
R.  A.  20*  55™  20'       Decl.  +  39°  47' 

A  and  B 
1908.266           2i7?i3            136*88 
•383           217.40            137-21 
.406           217.58            137.13 
.422           217.30            137-16 

1910.52                 6.9               87.25 

The  proper  motion  of  the  DM  star  is  given  : 
Battermann        o''3i     in     I77?7 

No  other  measures.    The  motion  in  A  is  confirmed  by  com- 
parison with  a  brighter  star  sp. 

A  and  DM  (33°)  4144  (8.9) 

1910.52        AR.  A.  —  75!  25        A  Decl.  —  6'/2        p 
187?                               75.46                         18  i        A  G 

1908.37             217.35            137-09 

A  and  C 
1908.406            i45°22           208:38 
.422            144.00           208.26 
.425            145.03           208.48 

A  and  DM  (33°)  4121  (9.1) 
1910.51        A  R.  A.  +  65:2       A  Decl.  —  is'/9       P 

1908.42             145-05           208.37 

B  and  C 
1908.406            IO7?O2            211:89 
.422            107.03            212.02 
.425            107.08           212.60 

3  Equulei     (5.9..  .12.8) 
R.  A.  20"  56m  17'        Decl.  +  6°  43' 

1911.509            251  ?73              80:40 
•545            251.90              81.14 

C  and  c  (10.2..  .10.6) 

1908.406             38^62               8:76 
.422             39.03               8.62 
•425             39-45               8.61 

1911.54              251.80              80.72 

The  proper  motion  derived  from  the  meridian  positions  is 
very  uncertain  : 

Auwcrs        o''oo7    in    27o?o 
Boss              0.016    in    227.3 

1908.42               39.03               8.66 

The  only  other  direct  measures  are  of  the  large  stars  : 
1893.80           2i7?23           132:70          2n           Eng 

Assuming  the  fixity  of  the  smaller  component,  the  proper 
motion  of  Groombridge  3357  is  : 

0:302    in    40°8 
From  meridian  observations  this  is  given  : 

Lalande  40848     (8.0...  6.  7) 
R.A.2o"s8m23'       Decl.  +  45°  24' 

1908.266            i34?63            165:55 
•370            134-98            165.55 
•383            I35.I3            165.72 

Stumpe                  0:307    in    48?4 
Groombridge         0.308    in    47.2 
Porter                   0.333    in    51.5 

It  would  be  generally  unsafe  to  assume  that  a  star  of  the 
magnitude  of  B  was  fixed,  but  in  this  instance  from  all  the 
data  it  appears  to  have  no  sensible  movement.    To  make  this 
certain  hereafter,  I  have  measured  a  third  small  star  from 
both  A  and  B. 
6 

1908.34             134-91            165.61 

The  larger  star,  B,  is  a  very  close  pair  (=  0  1138).    In  my 
General  Catalogue  the  proper  motion  of  L  40848  is  erroneously 
given  to  (J  1138.     The  meridian  positions  give  the  latter  no 
sensible  motion.    The  only  direct  measures  of  these  stars  are 
the  following: 

1894.04            J33°i5            167:76           2n            Eng 
1908.34            134-91            165.61            3n            p 
3 

Burnham:   Measures  of  Proper  Motion  Stars 


- 


These  measures  give  for  the  proper  motion  of  A,  assuming 
e  other  to  be  fixed  : 

07388    in    66?3 

From  transit  observations  we  have : 

Stumpe  o7376    in  69?  7 

Paris  0.401     in  70.9 

Porter  0.365    in  68.6 

A.  G.  Bonn    0.375    in  69.7 

If  the  micrometer  positions  are  combined  with  the  relative 
isitions  in  the  catalogues  of  Weisse,  O.  Arg.  N.,  A.  G.  Bonn 
d  Porter,  the  most  probable  movement  of  A  is : 
07416    in    72?4 

For  verification  of  the  real  motion,  I  have  measured  a  very 
faint  star  near  A. 

A  and  a  (12.8) 

1908.266  67^62  17718 

.383  67.80  16.88 

.406  68.55  17-09 


1908.35 


67.99 


17-05 


Lalande  40844     (8. 6... 10.7) 

R.  A.  20"  59™  24'        Decl.  +  6°  37' 

A  and  B 

1008.441       207?22        105734 


•444 
.460 


207.15 
207.27 


105.40 
105.60 


1908.45 

1908.441 
.444 
.460 


207.21 
A  and  C  (9.1) 

ii9°25 
119-13 
119.17 


105.45 

J97"77 
198.45 
198.49 


1908.45              ii9. i8  198.24 
The  first  measures  are : 

AB        1891.85        204?68        113703  in        Eng 

AC        1891.91        121.53        204.07  2n        Eng 

The  four  sets  of  measures  give  for  the  annual  movement  of 
the  principal  star : 

AB        R.  A.  +  07104        Decl.  —  07557 
AC  .085 .551 

+  0.095  —0.554 

Therefore  the  proper  motion  of  Lalande  40844  is : 

07563    in     170^3 
This  has  been  given : 

Stumpe         o7s6o    in    I77?9 
Porter  0.529    in     178.2 


4  Equulei      (6. 1. ..12. 5) 

R.  A.  20"  59™  30"        Decl.  +  5°  29' 


1911.487 
•509 
_l526^ 

1911-50 


275-50 
275-53 
275-10 

275.38 


35?8S 
35-55 
35-40 
35-60 


The  proper  motion  is  given : 

Auwers         o7i59    in    2i7?o 
Boss  0.169    in    217.6 

No  other  measures  of  the  small  star. 


Piazzi  XXI.  470     (8 . 0 ...  12 . 9) 

R.  A.  21"  im  22'        Decl.  —  6°  3' 


1908.444 

•  479 
.482 


296.03 
295.40 


1908.47 


295.98 


42.14 
42.00 

41.98 


No  other  measures  of  the  small  star.    The  proper  motion 
of  A  is  given: 

Stumpe  07300    in    45?6 

Porter  0.324    in    45.2 


DM  (10°)  4481     (8. 6... 9. 5) 
R.  A.  21"  6™  17'       Decl.  +  10°  9' 

A  and  B 
1908.422  357°87  187702 


•  425 

•  444 


357-73 
357-73 


187.07 
186.85 


1908.43  357-78  186.98 

B  and  C  (12.5) 

1908.425  3i?45  19746 

.444  30.08  19.45 

-479  30.10 19-43 

1908.45  30.54  19.45 

No  other  measures  of  C.  B  is  DM  (10°)  4480.    For  AB  we 
have: 

1892.84  358^62  187734  2n 

1908.43  357.78  186.98  3n 


Eng 


These  positions  give  for  the  proper  motion  of  the  principal 
star: 

o7i75    in    8o?8 

From  meridian  observations: 


Stumpe 
Porter 


0.200    m    90:0 
0.172    in    83.3 


(3. 3..  .II  .5) 
R.  A.  21*  7m  50"       Decl.  +  29°  44' 

A  and  B 
1907.463  2O4?90  69706 


-485 
.502 


204.40 
204.00 


69.16 
68.79 


1907.48  204.43  69.00 

A  and  C  (11.2) 

1907.485  209?53  90735 

.502  209.52  00.44 


1907.49 


299.52 


90.40 


69 


Burnham:   Measures  of  Proper  Motion  Stars 


A  and  D  (12.5) 

I907-3SI  66°oo  102775 

.465  66.02  102.78 

.502  66.05  102.99 

1907.44  66.02  102.84 

Of  these  stars  only  D  has  been  measured  before: 
1879.40  67?2  101725  2n  |1 

From  the  two  positions  the  proper  motion  of  £  Cygni  is : 
Measures      o7o94    in     I93?7 
Auwers         0.055    in     196.4 
Newcomb     0.061     in     182.3 
Boss  0.059    >n     182.5 

Repeating  the  measures  hereafter  of  all  these  stars  will  give 
a  more  accurate  proper  motion. 


Lalande  41348     (8. 5... 9.3) 
R.  A.  21*  1 1™  50*        Decl.  — o°  20' 

A  and  B 
1908.422  58?is  179757 


.425 
•  441 


58.30 
58.02 


179-87 
179.16 


1908.43  58.16 

B  and  C  (12.2) 
1908.422  n6?3 

.425  "6.7 

.441  116.5 


179-53 


H-99 
ti-74 


1008.43 


116.5 


"-9S 


B  is  DM  ( — o°)  4196.  Meridian  positions  are  found  in 
Lament,  Porter  and  A.  G.  Nico.  The  first  micrometer  position 
is  from  a  single  night,  and  therefore  the  correction  to  the 
proper  motion  is  perhaps  less  certain. 

1891.85  6o?27  184752  in  Eng 

1908.43  58.16  179.53  3n  P 

From  these  positions  the  proper  motion  of  Lalande  41348  is: 
07502    in     H2?4 

Some  of  the  values  from  transit  observations  are  given : 
Stumpe  o?464    in    m?5 

Porter  0.450    in    113.1 

A.  G.  Nico.       0.478    in    116.1 

The  relation  of  the  components  in  Lamont  for  1853.7  is  in- 
consistent with  subsequent  observations.  There  are  no  other 
measures  of  the  faint  star  C. 


a  Cephei     (2.8...IO.6) 
R.  A.  21*  15"  42*       Decl. +  62°  5' 

A  and  B 
1907.772  Z2°27  2o676o 


.788 
.807 

22.42 
22.41 

206.89 
207.01 

1907.79 

22.37 

206.83 

1907.772 


.791 


B  and  CD 

I72?4 
172.0 


19.98 
19.92 


1907.78  172.0 

C  and  D  (n.i..  .11 

1907.788  ioo?8 

.791  107.8 


-3) 


19-87 

2767 

2-57 


1907.79              104.3  2.62 

The  only  earlier  measure  is : 

1879.41             23?45           209722  2n 

I907-79             22.37           206.83  3n 

We  have  for  the  proper  motion  of  a  Cephei: 

Measures               o7i62    in  8l?6 

Newcomb              0.164    m  72-7 

Auwers                  0.150    in  80.4 

Groombridge         0.149    in  71.6 

Boss                       0.160    in  72.1 


DM  (41°)  4134     (8. 2... 9. 5) 
R.  A.  21"  2I"1  20'        Decl. +  41°  12' 


1909.342 
-458 
-473 


2o6?68 
296.48 
296.45 


80.89 
80.89 


1909.42  296.54  80.88 

B  is  DM  (41°)  4133.    Probably  fixed. 

1878.64  2o6?83  8i"45  2n 


25  Aquarii      (5. 4. ..II. 7) 
R.  A.2ih33m29t        Decl. +  1°  42' 


1911.644 
.663 
.698 


45?56 
45-66 
45-30 


132736 
132.68 
132-65 


1911.67 


45-51 


132.56 


1909.342 
•378 
.381 


Il8?02 

118.20 
118.00 


141 "77 
141.76 
141.71 


Bl 


No  other  measures.    The  proper  motion  is  given : 

Auwers         o7o8s    in    2i2?o 
'         Boss  0.098    in     199.9 


DM  (37°)  4407         (Var...io.4) 
R.A.2i"38mi8<       Decl. +  37-28' 


118.07 


MI.75 


1909.37 

The  principal  star  is  red,  and  variable  7  m  to  9  m.    The  fol- 
lowing measure  is  corrected  for  an  error  of  180°  in  the  pos 
tion-angle: 

1878.65  ii8?os  140786  2n  BI 


70 


Burnham:   Measures  of  Proper  Motion  Stars 


Oxford  (Z  26°)  74272     (10.2) 
R.  A.  21"  39m  3o:34        Decl.  +  26°  56'  7"4 

This  is  DM  (26°)  4251  (9.3).  The  place  for  1900  is  from  a 
plate  taken  1907.77  for  the  Oxford  Astrographic  Catalogue. 
The  photographic  positions  give  for  the  proper  motion : 

A  and  B  (9.4..  .10.3) 

1910.375  i8?73  I24?47 

.397  18.67  124.65 

.436  18.67  124.84 

1910.40  18.69  124.65 

A  and  DM  (26°)  4256 
10.40        A  R.  A.  +  79?oi        A  Decl.  —  122*5 


127.8 


(5 
A.  G. 


1910.40 
1875 


A.  G. 


78.30 
A  and  DM  (26°)  4249 

AR.  A.  —  26?8o        A  Decl.  —  176^3 
27.24  177.1 

The  proper  motion  is  doubtful  at  least.  A  later  set  of  meas- 
ures of  AB  will  at  once  show  what  the  fact  is.  The  last  com- 
parison star  is  A  299. 

This 


Oxford  (Z  26°)  74061      (8.4) 
R.  A.2i639m38:os        Decl.  +  26°  3'  32".? 
This  star  is  DM  (25°)  4607  (8.2).    Place  for  1900  from  an 


Oxford  plate  taken  1907.77.    The  photographic  positions  give 
i  proper  motion : 

of  1 99    in    S9?4 

A  and  B  (8. 2... 12. 9) 
1910.436  3i9°8o  30?o8 

•455  318.18  30.85 


1910.44 
1875 


1910.44 
1875 


1910.44 

1875 


1910.44  318.99  30.91 

A  and  DM  (25°)  4602  (9.2) 

A  R.  A.  — 40!  i       A  Decl.  —  85'!  5 
39-6  81.3 

A  and  DM  (25°)  4604  (9.3) 

AR.  A.  — 29:4       A  Decl. +  148*4 
28.6  151.1 

DM  (25°)  4602  and  4604 

2n 


32:15 
32.6 


275-43 
275-8 


A.  G. 


A.  G. 


P 

A.  G. 


DM  (49°)  3673     (9.i...n.i) 
R.  A.2ih5om48'        Decl. +  49°  56' 

1909-342  258?02  83^80 

•515  257.93  84.16 

•531  258.05  84.38 

1909.46  258.00  84.11 

The  larger  star  is  red.    The  prior  measures  disagree  in  dis- 
tance, but  probably  unchanged. 

1876.94  258?32  84"5S  in  Bl 

1879-45  257.90  83.28  in  Bl 


Lalande  42883      (7. 4. ..13. 8) 
R.  A.  21*  53™  22'        Decl.  +  29°  15' 


1909.458 
-512 
•SIS 


133.35 
I33.70 
134.10 


29-94 
29-43 
29.92 


1909.49  133.72  29.76 

No  other  measures.    The  principal  star  has  a  large  proper 
motion : 

Stumpe         o"57O    in    224?2 
Porter  0.559    in    225.9 

Paris  0.549    in    223.0 


16   Cephei     (5.2...I2.O) 
R.  A.  21"  57™  32"        Decl.  +  72°  37' 

1910.551  I74°78  I34"i2 

.589  174.02  I34-40 

•605  173.99  I34.40 

1910.58  174.20  134-31 

No  other  measures.    For  the  proper  motion  we  have : 
Auwers         o!'i87    in    20o?8 
Boss  0.173    in    202.7 

a  Aquarii     (3.0..  .I2.o) 


R.  A.  2  1"  59"1  37  ' 

1907.463 
.482 
.523 


Decl.  —  o°  54' 

4i?25  ii2"8o 

41.90  113-32 

41.22  113-04 


1907.49  41.46  113.05 

The  proper  motion  of  a  Aquarii  is  very  small,  and  altogether 
uncertain  so  far  as  the  meridian  observations  are  concerned. 
From  the  leading  authorities  we  have  : 

Auwers  (F.  C.)  o''oi2  in  279?$ 
Auwers  (A.  N.)  0.008  in  248.2 
Newcomb  0.014  in  98.3 

Boss  0.015    in     114.0 

The  only  measures  of  the  small  star  are  : 

1879.50  4i?5  114^64  2n  fj' 

1907.49  41.46  113.05  3n  0 

It  seems  certain  that  the  motion  of  the  large  star  is  in  the 
first  quadrant,  and  nearly  in  the  direction  of  the  faint  com- 
panion ;  and  that  the  values  from  star  catalogues  are  incorrect. 
A  continuation  of  these  measures  will  finally  give  the  exact 
motion.  The  two  positions  now  available  give  the  proper 
motion  : 

0^057    in    44?s 

I  Pegasi      (3.8.  .  .11.2) 

R.  A.  22"  im  26'       Decl.  +  24°  46' 


1907.312 

•463 
.482 

•485 


220:52 
220.40 
220.55 
219-95 


103.53 
103.94 
103.67 

103.73 


1907.43 


220.35 


103.71 


Burnham:   Measures  of  Proper  Motion  Stars 


The  measures  cover  a  period  of  more  than  half  a  century. 
1852.80  2I3?23  92"io  an  OS 

1861.65  214.85  94-19  m  O2 

1883.82  217.85  98.35  m  H2 

1907.43  220.35  103.71  4n  P 

The  corrected  proper  motion  of  i  Pegasi  is  therefore : 
07304    in    83?4 

From  meridian  observations : 

Auwcrs          0*284  in  85  °8 

Newcomb       0.303  in  86.3 

Boss  0.300  in  86.6 


DM  (49°)  3746     (6. 9... 13. 3) 
R.  A.  22"  3"  37'       DecL  +  49°  13' 


1910.490 

•509 
.512 

272?95 
272.60 
272.85 

27*52 
27.61 
27.48 

1910.50 

272.80 

27.54 

No  other  measures.     No  proper  motion  found  in  the  star 
catalogues. 


Bradley  2926     (5. 4... 10.5) 
R.  A.  22"  7"  29'        Decl.  +  56°  14' 


1907.312 

34°33 

74*81 

.329 

34-75 

75.40 

.348 

34-50 

74-94 

•  444 

34-22 

74-93 

1907.36 


34-45 


75.02 


Eng 
Eng 


For  the  proper  motion  we  have : 

1887.91  36?47  80^26  2n 

1894-91  35-85  78.91  2n 

1907-36  34-45  75-02  4n  P 

From  which  the  proper  motion  of  the  principal  star  is: 

Measures       0*296    in  63?o 

Auwers          0.269    in  61.8 

Boss  0.270    in  62.0 


i  c«p/i«;  (4. 5... 9. 6) 

R.  A.  22'  10™  38'        Dccl.  +  56°  27' 


From  a  mean  of  the  first  two,  compared  with  the  last, 
have  for  the  proper  motion  of  E  Cephei:  . 

0^467    in    82?4 

From  meridian  positions: 

Auwers  0*451  in  86?  i 

Boss  0.452  in  84.4 

Porter  0.438  in  84.9 


35  Pegasi      (5.0. ..10.5) 
R.A.22*2im47'        Decl. +  4°  6' 

A  and  B 
1907.444  2io?io  o8"o9 


we 


.502 
•  523 


210.77 
209.68 


98.37 
98.79 


1907-49 


210.18 


98.42 


A  and  C  (10.4) 

1907.444 
.502 
•523 

241  °45 
241.55 
241.68 

181:03 
181.25 
181.39 

1907.49 

241.56 

181.22 

B  and  C 

1907.444 
.502 
.523 

269?  13 
269.68 
269.18 

109*25 
109.49 
109.77 

1907.49  269.33  109.51 

We  have  the  following  measures : 
AB 


AC 


From  these  positions  the  annual  movement  of  the  large  st 


1886.70 

207^62 

IO2"7I 

2n 

Eng 

1894.85 

209.10 

100.71 

3n 

Eng 

1907.49 

210.18 

98.42 

.in 

P 

1886.70 

239.62 

182.72 

in 

Eng 

1894.84 

240.53 

181.32 

2n 

Eng 

1907.49 

241.56 

181.22 

3n 

P 

is: 


AB 
AC 


R.  A.  +  o"ooo 
.082 


Decl.  —  0*285 
•293 


1907.329 
-348 
-351 


17-63 
17.32 


129720 
129.12 
129.20 


1907-34 


17.60 


129.17 


The  small  star  is  DM  (56°)  2744,  and  its  place  is  given  in 
A.  G.   The  only  direct  measures  are: 

1887.91  21!  13  133*29  2n  Eng 

1894.91  19-72  132.00  2n  Eng 

•907-34  i7-6o  129.17  3n  P 


+  0.086  —0.289 

The  proper  motion  of  35  Pegasi  is  therefore : 
0*302    in     163 ?4 

From  meridian  positions : 

o''3o6  in  169^3 
0.316  in  168.8 
0.325  in  166.4 


Auwers 
Porter 

BOM 


Groombridge  3804     (6. 5. ..II. 5) 
R.  A.  22"  27™  8'        Decl. +  39°  10' 

A  and  B 
I9II-373  345°22  32*92 


-392 
-395 


1911.39 


345-40 
344-85 

345 -iG 


32.91 
32.61 

32-81 


Burnham:   Measures  of  Proper  Motion  Stars 


A  and  C  (11.2) 

19II-373            IS6?97              4376i 
.392            158.04              43.91 
•395             157-37              43-62 

Lalande  44708     (8.0...  9.  5) 
R.  A.  22"  45™  26'        Decl.  +  13°  20' 

A  and  B 
1908.460            337°7o            198794 
•479            337-95             198.77 
.556            337-74             199-08 

I9II-39              I57-46              43-71 

No  other  measures.    The  proper  motion  of  the  large  star  is 
small  : 
Groombridge       o7oi7    in     I25?5 
Boss                      0.020     in     117.3 

DM  (53°)  2911     (9.  6.  ..12.  8) 
R.  A.  22"  27™  47'        Decl.  +  53°  W 

A  and  B 
1912.427            209?6                22795 
.430            209.7                22.60 
.465            209.5                23.25 

1908.49              337-So            198.93 

B  and  C  (n.o) 
1908.460            193°  17            106752 
•479            193-37             106.45 
.556            193.50            107.18 

1008.48              193.35             106.72 

B  is  DM  (13°)  5005.    For  comparison  we  have  the  following 
measures  of  AB: 
1853.68           343°3i            2oo"s6           2n            O2 
1865.91           342.08           200.18           in            O2 
1883.73           340.22            199.59            in            H2 
1891.80           339-25            199-67           2n            Eng 
1908.49           337-So           198-93           3n            f5 

Therefore  the  proper  motion  of  Lalande  44708  is  : 
07357    in    66°o 

The   value   heretofore   given    from   meridian    observations 
appears  to  be  too  large  : 
Stumpe          07414    in    s8?2 
Porter             0.444    in    58.8 
Boss                0.474    in    63.2 

I  have  measured  a  third  star  to  make  it  certain  hereafter 
that  B  has  no  motion. 

60  Pegati     (6.4..  .8.7) 
R.  A.  23"  6m  o'       Decl.  +  26°  12' 

1909.381            294?so           231709 
.496           294.30           231.88 
.512            294.33            231.13 

1912.44              209.6                22.93 

A  and  C  (10.7) 
1912.427             I94?23              48749 
.430            194.80              48.45 
.465            194.81              48.91 

1912.44              194.61              48.62 

From   a   comparison   of   photographic   plates,    Belanowsky 
(Mitteilutigen,  Pulkowa  V)  gives  A  a  large  proper  motion  : 

1723    in    83?! 

I  have,  therefore,  measured  the  nearest  two  stars,  the  larger 
of  which  should  be  on  the  photograph.    A  measure  of  that  on 
the  plate  will  at  once  settle  the  question  of  proper  motion. 
The  nearest  catalogue  star,  DM  (52°)  3236,  which  is  about 
7'  s  of  the  proper  motion  star,  has  a  small  companion  not  pre- 
viously measured  : 

A  and  B  (8.8.  .  .12.8) 
1912.408            i8i?i               i67oi 
.427            181.6               16.02 

1909.46             294.38           231.47 
The  prior  measures  are: 
I853-77           292?  10           238743           2n           O2 
1874.82           292.97           235.97            m            O2 

From  these  positions  the  corrected   proper  motion   of  60 
Pegasi  is  : 

This  has  been  given  from  meridian  observations: 
Auwers         07225    in    242^2 
Porter           0.236    in    240.6 
Paris             0.207    in    239.6 
Boss              0.229    in    237.8 

As  a  further  check  on  this  movement,  I  have  measured  a 
much  fainter  star: 
A  and  a  (11.3) 
1909.496            240?  20              86748 
.515            240.70              86.  81 
.531            240.60              86.77 

1912.41              181.3               16.01 

DM  (64°)  1713     (7.  3...  9.2) 
R.  A.  22*  41™  46'        Decl.  +  64°  40' 

1909.438            240^07            146761 
•473            239.88            146.61 
.496            240.26            146.84 

1909.47              240.07             146.69 

The  smaller  star  is  DM  (64°)  1711.    One  of  these  stars,  and 
presumably  the  larger,  may  have  a  small  proper  motion. 
1878                240?2             14579                           A.  G.  Hels. 
1879.15           239.77            145-01            2n            Bl 

Groombridge         o7o8r     in    87?2 

1909.51              240.50              86.69 

73 


BiiniJiam:   Measures  of  Proper  Motion  Stars 


Bradley  3077     (S-T-.-P-S) 
R.  A.  23*  7-  29'       Decl.  +  56°  30' 


1907.293 
.329 

•351 


206?S7 
206.37 
206.30 


104-35 
104.80 
104.84 


1907-3-' 


206.41 


104.66 


The  proper  motion  of  the  large  star  is : 

Measures  o"o83  in  ioo?i 
Auwers  0.130  in  121.9 
Boss  0.139  in  124.1 

The  difference  is  probably  due  to  errors  of  observation;  it 
is  not  likely  that  the  small  star  has  any  motion.  This  will 
appear  hereafter  from  a  re-measurement  of  the  third  star. 


The  measures  are  ample  in  point  of  time: 


1852.74 

I39°53 

1853.10 

140.22 

1868.80 

157-88 

1882.76 

177.12 

1884.16 

179.  10 

1887.91 

183.88 

1907.32 

206.41 

101.93 

89.70 

87.36 

87.34 

88.35 
104.66 

The  corrected  proper  motion  of  the  principal  star  is  : 


in 

in 
in 
in 
in 
2n 


O2 

O2 

O2 

O2 

H2 

Eng 

P 


DM  (60°)  2532     (8. 4... 10.9) 
R.  A.  23"  i8m  56'        Decl.  +  60°  56' 

A  and  B 
1909.378  l67?07  44748 


Measures  27093  in  82?2 

Auwers  2.094  in  82.2 

Boss  2.102  in  81.9 

Newcomb  2.109  'n  81.9 


Bradley  3084     (5. 4... 12. 7) 
R.  A.  23'  1 1"  14'       Decl.  +  52°  33' 

1909.742  319^22  123777 

•744  319-27  124.16 

.760  318.92  124.09 


.438 

•493 

167.23 
166.90 

44-36 
44-39 

I  oo,  )..u 

167.07 

44-41 

A  and  C(io.8) 

1909.378 
•438 
•493 

354°38 
354-33 
354-27 

8or88 
80.97 
80.66 

1909.44 

354-33 

80.84 

A  and  D  (10.5) 

1909.378 
•438 
•493 

64?37 
64.05 
64.10 

130737 
130.51 
130.54 

1909.44 

64.17 

130.47 

I 


1909.75 


319.14 


124.01 


No  earlier  measures.     The  proper  motion  of  Bradley  3084 
is  given : 

Auwers  07291  in  i6i?5 

Groombridge  0.275  >n  155.5 

A.  G.  Harv.  0.252  in  160.1 

Boss  0.270  in  154.5 


\2Andromtdae      (6.O.  .  .8.7) 

R.  A.  23"  15"  6'       Decl. +  37°  32' 

A  and  B 

1907-  7<*)  255?62  120:43 

•772  255.70  120.44 

•788  255.83  120.50 


A  is  the  principal  star  of  h  2238  (M  52).  The  first  measures 
are  somewhat  discordant,  especially  in  distance.  Probably 
there  is  no  change. 


AB 

1876.56 
1880.02 

166.20 

44"67 
43.83 

in 
in 

Bl 
Bl 

AC 

1876.56 
1880.02 

354.38 

79-44 
81.24 

in 
in 

Bl 
Bl 

AD 

1876.56 
1880.02 

64-55 
64.50 

131.12 
130.58 

in 
in 

Bl 
Bl 

1907.77 

1907.788 
•791 


255.72 
B  and  C  (12.0) 


213-93 


120.46 


155.83 


1907.79 


213.91 


We  have  the  following  measures : 
1886.96  255?6s  i 18777 

1894.93  255.72  119-25 

1907-77  255.72  120.46 


155.83 


2n 
2n 
3n 


Oxford  (Z  26°)  78862     (8.6) 
R.  A.  23"  23™  i6!7i        Decl.  +  25°  22' 4079 

This  star  is  DM  (25°)  4940  (8.7).  The  place  for  1900  is 
from  the  Oxford  Astrographic  Catalogue,  plate  taken  1907.77. 
The  proper  motion  is  given : 

07148    in    42?o 

A  and  B  (12.9) 

1910.452  282°9  39:90 

.455  284.0 39-49 

1910.45  283.5  39.69 

A  and  C  (13.0) 

1910.452  257?2  53752 

•455  257.1  53.34 


Eng 
Eng 
P 


1910.45 
1875 


1910.45  257.1  53.43 

A  and  DM  (25°)  4944  (8.8) 

A  R.  A.  +  57?  8       A  Decl.  —  142:0 
58.3  142.8 


P 
A.  G. 


74 


Burnham:  Measures  of  Proper  Motion  Stars 


X  Andromedae     (4.0...  10.5) 
R.  A.  23"  3im  42"        Decl.  +  45°  48' 

A  and  B 
1908.425              89?03            217*64 
.444              88.75            218.23 
.460              88.87            217.60 

i  Piscium     (4.  3...  13) 
R.  A.  23"  33™  48'        Decl.  +  4°  59' 

1909.570            294?3o              7o''o8 
.592            294.77              69.70 
.627            294.35              69.88 

1909.60              294.47              69.89 

The  only  other  measure  is: 
1879.56           288?o             54''o           2n            f?" 

These  positions  give   for  the  corrected  proper   motion  of 
i  Piscium: 
o''577    in     I35-O 

This  has  been  found  from  meridian  observations  : 
Auwers         o''s6i     in     I4i?2 
Newcomb     0.570    in     139.9 
Boss              0.574    in     139.8 

Piazzi  XXIII.  164     (7.0.  .  .9.5) 
R.  A.  23"  37m  24'       Decl.  +  57°  24' 

A  and  B 
1907.810            2i2?8i              99''i4 
.845            212.75              99-46 
.865            212.75              99-33 

1908.44               88.88           217.62 

A  and  a  (i3-3) 
1908.425             I98?72              47^74 
.444            198.80              47.45 
.460            199.18              47.44 

1908.44              198.90              47.54 

Band  b  (11.5) 
1908.425            i57°95             68"49 
.444            157-90              68.31 
.460            157.93              68.63 

1908.44              157.93              68.48 

The  small  stars  have  not  been  measured  before.     For  AB  we 
have: 
1868.77             93°i8           222^29            in            O2 
1882.76             91.91            220.24            in            O2 
1908.44             88.88           217.62           3n            |3 

The  proper  motion  of  the  large  star  is: 
Measures      o"455     in     165^6 
Stumpe         0.455    in     158.8 
Auwers         0.454    in     161.2 
Newcomb     0.451     in     158.6 
Boss               0.449    in     159-7 

74  Pegasi     (6.0...  10.5) 
R.  A.  23"  32'"  35'        Decl.  +  16°  10' 

A  and  B 
1907.485              34?77              98"  18 
•523              35-05              98-32 
•  540              35-03              98.08 

1907.84              212.77              99-31 

A  and  C  (9.5) 
1907.810            138^33             ii6:'7o 
.845             138.10             117.28 
.865            I37-7S            "6.88 

1907.84             138.06            "6.95 

A  and  D  (9.2) 
1907.810             189^70            164792 

•845             189-73             165-34 
.865             189.63             165.53 

1907.84              189.69            165.26 

A  and  E  (9.5) 
1907.810            I23?i6             158:71 
.845             123-23             I59-4I 
.865             122.90            159.18 

1907.52                34.95              98.19 

B  and  C  (12.0) 
1907.485            238?6                25^68 
•523            238.9                25.78 
•540            239.3                25.65 

1007.84              123.10            I59-IO 

A  and  F  (9.0) 
1907.810            I9i?oo            2i8?8i 
.845             100.85            219.13 
.865             190.88            218.91 

1907.52              238.9                25.70 

No  other  measures  of  the  faint  star  C.     Of  the  other  we 
have: 

1887.00             36°o7            loo?  14           2n            Eng 
1894.91             35.52             99.70           2n            Eng 
1907-52             34-95             98.19           3n           0 

From  these  positions  the  proper  motion  of  74  Pegasi  is  : 
Measures        o"i28    in    78^6 
Auwers           0.112    in    96.2 
Boss                0.120    in    90.9 

1907.84              190.91            218.95 

The  prior  measures  are  : 
AB        1894.18        2i2?so         9i"so        2n        Eng 
AC        1894.20        134.20        "5.56        2n        Eng 
AD        1894.18        188.52        158.33        2n        Eng 
AE        1894.20        120.37        160.51        2n        Eng 
AF        1894.15        190.07        211.57        2n        Eng 

75 


Burnham:   Measures  of  Proper  Motion  Stars 


The  motion  of  the  large  star  is  : 
AB        R.  A.  +  0^336 


Decl. 


AC 
AD 
AE 
AF 


.343 
.319 
.382 
.326 


.471 
.463 
.421 


•341 


.463 


Therefore  the  true  proper  motion  is  : 
o?575    in    36?4 

This  is  given  from  transit  observations  : 
Stumpe  or6o8    in    3p 

A.  G.  Hels.     0.618    in    40. 
Porter  0.605    >n    36. 


•([<  Andromedae      (5.0.  ..14.  5) 

R.  A.  23"  40™  6'       Decl.  +  45°  45' 

A  and  B 
1908.479  2i8?7  24^73 


.518 


218.  i 


24.80 


1908.50 


218.4 


24.76 


A  and  C  (13.0) 

1908.479  I7?2  6i'/79 

.518  17.2  62.19 

•537  17-2  62.05 


1908.51 


17.2 


62.01 


A  and  D  (9.0) 

1908.444  i5i°7S  i84"i8 

.460  151.30  184.21 

•479  151.83  183.81 


1908.46 


151.63 


184.07 


B  and  C  have  not  been  previously  seen.     D  is  DM  (45°) 

4322.    For  the  relation  of  this  to  the  principal  star  we  have: 

1874.8  iSI?8  184^53  A.  G.  Bonn 

1879.79  151.89  183.23  2n  Bl 

1894.70  151.90  184.06  2n  Donncr 

The  position  of  1894  is  from  astrographic  plates. 
As  the  proper  motion  of  the  large  star  is  practically  zero, 
there  is  no  material  relative  change. 

.    Auwers         0^017    in     i6i?9 
Boss  0.022    in     145.1 


PART  II 

1EASURES  OF  PROPER  MOTION  STARS  IN  THE  GENERAL  CATALOGUE 

OF  DOUBLE  STARS 


0G.  C.  7.     P  1014.     (7.0... 12. 5) 
R.  A.ohi'"24'        Decl.  +  3i°o' 


1908.583 
.671 


335°7 
334-3 


i''47 
1.58 


1908.63 


335-0 


1-52 


These  measures  show  that  there  has  been  no  change  since 
1891.     Some  of  the  early  measures  have  large  errors  in  the 
osition-angle.    The  proper  motion,  if  any,  is  very  small. 


15.    O2(App.)2S6.     (7.0... 7. i) 
R.  A.  o"  i1"  51"        Decl.  +  30°  43' 


1907.695 

.711 
•  7H 

iiS.86 
"5-44 

105-03 
104.87 

1907.71 

115.72 

104.99 

1912.619 

.622 

.638 

"5°7o 
115.60 
115.80 

105:36 
105.24 
105.32 

1912.62 


115.70 


105.31 


four  sets  of  measures  by  A,  Franz  and  (3  (1876-1912) 
give  for  the  apparent  motion  of  B : 

o"o82    in    76^5 

As  these  stars  arc  of  about  the  same  magnitude,  the  proper 
motion  may  be  in  either  or  both.  I  have,  therefore,  measured 
the  nearest  third  star  : 

A  and  a  (13.6) 

1912.622  260?!  2o"ii 

.638  259.0  20.20 


1912.63 


259.5 


20.15 


19.    a.  Andromedae.     2i3,  App.  II     (2.0...  11.2) 
R.  A.  o"  2'"  1 1 "        Decl.  +  28°  26' 


1911.471 

275°72 

75"i7 

.509 

275.90 

75-34 

.529 

275-75 

75-44 

-545 

276.10 

75-39 

1911.51 

275.87 

75-33 

These  measures  will  not  sensibly  change  the  value  given  in 
the  General  Catalogue  for  the  proper  motion  of  a  Andromedae 
from  the  positions  1836  to  1903. 

Measures      ol'igS    in     140^3 

Auwers         0.200    in     141.2 

Newcomb     0.216    in     140.6 

Boss  0.213    in     139.1 


24.     P  Cassiopeiae.     A.  G.  C.  15.    (2. 2... 13. 7) 
R.  A.  o"  2m  43s        Decl.  +  58°  29' 


1910.666 
.678 
.681 


220?  I 

217.5 

218.8 


1910.67 


218.8 


23-74 

23-82 

^3.48 

^3768 


A  continuation  of  the  measures  of  the  small  star  will  give 
an  independent  and  better  value  of  the  proper  motion  of  the 
bright  star  than  that  derived  from  meridian  positions.  With 
the  time  interval  of  1889-1910  we  have: 

Measures  0^564  in  109?! 

Auwers  0.550  in  110.2 

Boss  0.558  in  108.9 

Newcomb  0.560  in  108.8 


32.    O.  Stone  I 
R.  A.o"3m28"        Decl.  — 14°  5i' 

There  is  an  error  in  the  Cincinnati  place  of  this  star.  It  is 
identical  with  2  3065  rej  (No.  14).  All  the  measures  cited  in 
G.  C.  Part  II  belong  to  ~Z  3065  rej. 


36.     H  1939.     (7-..io) 
R.  A.  oh3™4i'        Decl.  +  IO°  45' 


1909.802 
.936 


161.1 


34"8o 
34.65 


1909.87 


161.3 


34-72 


As  the  first  position  of  these  stars  depends  upon  a  single 
night,  the  apparent  change  in  distance  may  not  be  real. 


77 


Burnham:   Measures  of  Proper  Motion  Stars 


50.    Hdz.    (7.  5..-  12) 
R.  A.  o"  5°  6'        Decl.  +  7°  17' 

1907.540            H7?9                I4?75 
.673             120.4                14.81 
•675             "9-3                15-06 

No  other  measures,    h  8  is  2m  50"  /  H  1941,  with  nearly  the 
same  declination.    It  has  a  lo.im  star  in  the  center  like  the 
planetary  nebulae.    Its  place  is  found  from  the  following  stars  : 

h  8  and  star  10.4111 
1910.529            238?53              60"  54 
.570            238.33              60.23 
.586            238.42              60.10 

1907.63              119.2                14.  S- 

1909.742            ng?i                14^91 
.780            119.9               15-19 
.782            118.8               15.05 

1910.56              238.43              60.29 

A  8  and  DM  (71°)  6 
1910.529            I94?oo            214:05 
.570            195-43            213.59 
.586            195.23            213.88 

1909.77              119.3               15-05 

It  appears  now  that  change  is  not  probable.    All  the  other 
measures  are  given  in  Part  II  of  the  General  Catalogue. 

51.     Espin  40.     (8.8.  ..12.3) 
R.A.o's-V        Decl.  +  51°  24' 

A  and  B 
1907.695              73  ?4                 4^56 
•731              73-7                  4-82 
.750              71-2                 4-46 

1910.56              195-19            213-84 

h  8  and  DM  (71°)  8 
1910.529              6i?io            23o'.'43 
.570              61.28            230.57 
.586              60.85            230.29 

1910.56               61.08           230.43 

The  only  prior  position  is  : 
1886.68           6i?2           229^83            Kobold 

71.    O2(App.)i.    (6.  4...  7.0) 
R.  A.  o"  7™  22'       Decl.  +  75°  22' 

1909.742            I02?8s             76^04 
.744            102.73              76.38 
.760            102.60              76.46 
.763             102.52              76.39 

I907-73                72-8                  4-61 

A  and  C  (9.5) 
1907-695            3i7°5               24^85 
•731            316.9               24.55 
•  750           316.9               24.80 

1907-73             3I7.I               24.73 

Disagrees  with  prior  measures  of  AC.    The  position  from 
the  Attrographic  Catalogue  is  practically  identical  with  the 
measures  in  1907: 

1902.80           316^5           24:60           Catania 

55.    2S.     (7.  2...  8.  8) 
R.  A.  o"  sm  25'       Decl.  —  3°  45' 

1910.666            29i?9                  7774 
.681            292.3                  7.75 
.684            293.9                  7.56 

'909-75              102.68             76.32 

There  may  be  a  little  proper  motion  in  one. 

1842             I03?3       78^1                    O.  Arg.  N. 
1875              102.9        77-3                    A.  G.  Kasan. 
I875-79        102.4        77-07        3n        A 
1882.83        102.4        76-87        5n        Franz 

No  proper  motion  found  in  the  star  catalogues. 

99.    H  1047.     (7.  3...  10.  5) 
R.  A.  o"  J0m  3'        Decl.  +  42°  58' 

1910.666             75?6                9Toi 
.678             77.6                8.00 
.681              74-0                9-15 

1910.68              292.7                  7.68 
No  change  since  1831. 

57.    H  1941.     (n.o.  .  .11.2) 
R.  A.  0*5-31'       Decl.  +  71°  51' 

1910.529                 I93?2                       I2?32 

.570            106.  I                12.25 
•586            193.7                12.23 

1910.67               75.7                 9.02 

A  small  common  proper  motion.     All  the  earlier  measures 
are  given  in  G.  C.  Part  II.    The  proper  motion  of  the  principal 
star  (Groombridge  30)  is  given  : 

Groombridge      0^087    in     Il6?7 

1910.56                  194.3                     12-27 

78 


Burnham:   Measures  of  Proper  Motion  Stars 


113.     Hdio.     (10.7. ..ii. 3) 
R.  A.  o"iim±        Decl. +  3°  4' ± 


1908.652 

-6SS 
.709 


237°4 
239.0 
238.8 


31-52 
30.97 
31.21 


1908.67  238.4  31-23 

The  note  in  the  General  Catalogue  as  to  this  pair  following  a 
7.5m  star,  belongs  to  Hd  13  (No.  124)  as  given  in  Part  I.  The 
distance  of  Hd  10  in  the  measure  of  1903  is  much  too  large. 


116.     3&Piscium. 
R.  A.o"iim  13s 


22.     (7.0...  8.0) 
Decl.  +  8°  12' 


A  and  C  (12.5) 

1910.684  I4i?82  63^51 

.701  142.20  63.75 

.703  141.88  63.86 

1910.70  141-97  63.71 

"or  proper  motion  of  AB.     Other  values   from  meridian 
ositions  are: 

Auwers  o"io9    in  2o?o 

Boss  0.120    in  44.9 

Hedrick  0.074    in  102.1 


118.     223.     (7. 6... 9. 9) 
R.  A.  o"  nm20s        Decl.  —  o°  21' 


ipii.545 
.564 
.583 


A  and  B 
329?! 
328.6 
329-3 


4"7i 
4-58 
4.86 


1911.56  329.0  4.72 

This,  with  the  prior  measures    (1836-1911),  gives   for  the 
iroper  motion  of  the  principal  star : 

o"i2i     in     15?! 

The  movement  from  meridian  positions  is  : 
A.  G.  Nico.      o"ii2    in    o° 

For  a  further  independent  value,  I  have  connected  a  faint 
ar: 

A  and  C  (n.6) 

1911.545  28i?40  I03':i8 

.564  281.30  102.95 

.583  281.30  103.25 


1911.56 


281.33 


103-13 


119.     Hd  ii.     (9. 8. ..10. 7) 
R.  A.  o"  i  ira  39'        Decl. +  3°  5' 


1908.633 
.636 
.652 


290^5 
291.4 
291.0 


36.34 
36.60 


1908.64  291.0  36.45 

It  was  obvious  that  one  or  the  other  of  the  prior  single 
measures  given  in  G.  C.  Part  II  of  this  star  must  be  wrong 
The  distance  in  the  measure  of  1903  is  about  i"  too  large. 


136.     H   1951.     (8.0... 12.0) 
R.  A.  o"  12™  41*        Decl. —  ii°  37' 


1908.633 
.652 
.655 


218=4 
217.7 
216.5 


22'.'87 

22.98 
22.95 


1908.65 


217-5 


22.93 


The  only  earlier  measures  are  my  own,  given  in  G.  C.  Part  II. 
As  the  first  position  depends  upon  a  single  night,  the  apparent 
change  in  distance  may  not  be  real. 


141.     i  Ceil    H  1953.     (3. 7.  ..12) 
R.  A.  o"  13™  19'        Decl.  —  9°  30' 


1910.666 
.681 
.701 


17.08 
16.95 


1910.68 


16.98 


63"74 
63.02 

63.58 
63-45 


Comparing  this  with  the  first  position  in  1880,  we  have  for 
the  proper  motion  of  i  Ceti: 

0*072    in    243?8 

Other  values  from  meridian  positions  are : 
Auwers         o"o49    in    237?9 
Boss  0.037    in    209.0 

Newcomb     0.035    m    212.5 


144.     8384-     (6. 8... 9. 3) 
R.  A.  o"  13"'  44'        Decl.  +  37°  34' 


1910.666 
.678 
.681 


19.30 
18.83 
18.90 


7i"39 
71.29 


1910.67 


19.01 


71-33 


The  proper  motion  of  A  from  the  measures  of  AB,  and  from 
the  star  catalogues  is : 

Measures  o"3O9  in  206°  i 
Stumpe  0.332  in  207.0 
Porter  0.304  in  211.9 

There  is  no  indication  or  probability  that  the  smaller  star  has 
any  sensible  proper  motion,  but  I  have  measured  a  much  fainter 
and  nearer  star: 

A  and  a  (13.5) 

1910.678  267?o  2o"78 

.684  266.5  20.30 

.739  267.5  20.73 


1910.70 


267.0 


20.00 


158.     Hdi4.     (9- 5... 13- 5) 
R.  A.  o"  15™  12'        Decl.  +  7°  22' 


1907.772 
9-703 


I57?3 
158.6 


51.13 
51-50 


1908.74  158.0 

No  other  measures  of  these  stars. 


79 


Burnham:   Measures  of  Proper  Motion  Stars 


165.    42  Piscium 

.    227.     (6 

8..  .10.  7) 

179.    Hd  16.    (8.5...II.O) 

R.  A.  o*  i6m  13 

Decl.  + 

12°  49' 

R.  A.  o"  I7m  47"        Decl.  +  3°  & 

1908.613 

332?  i 

29*05 

1910.838           2oo?o8             56*93 

.633 

333-3 

29.23 

.856           290.37             56.53 

.636 

332-0 

29.08 

•893           290.13             57-54 

.652 

331-9 

29.00 

1910.86             200.19             57.00 

1008.63 

332.3 

29.09 

The  apparent  change  in  distance  is  not  confirmed  ;  but  further 

The  six  positions  on  20  nij 

[hts  by  2,  A, 

HI  and  6  (1829-1908) 

measures  should  be  made  ten  or  twenty  years  hence. 

give  for  the  corrected  proper  motion  of  42  Piscium: 
0*083    in    46?3 

Meridian  positions  give: 

Auwers    0*051     in    46?3 
Boss         0.063    in    65.5 


169.    H  1959.    (8. 5... 10. 2) 
R.  A.  o*  i6m  23'        Decl. +  21°  o' 

1909.630  z86?3  27*40 

.687  286.1  27.20 


1909.66  286.2               27.30 

No  other  measures.  Distant  about  50'  np  H  1959  is  h  17, 
and  h  16  is  sp  that.  In  the  field  with  the  first  are  several  small 
stars. 

h  17  and  star  10.5  m 

1909.630  I54?9                56*44 

.649  154.8                57-71 


1909.64 


IS4.8 


57-07 


h  17  and  star  io.6m 
1009.630  84  ?o  82*68 

.649  80.4  80.54 


1909.64 


82.2 


81.61 


h  17  and  star  10.6  m 
1909.630  I02?o  94" 77 

.649  101.7  93.8i 


1009.64 


ior.8 


04.29 


The  nebula  is  too  diffused  for  accurate  bisection,  and  h  16 
has  no  good  comparison  star.  The  following  positions  are 
from  differences  in  R.  A.  and  Decl. : 

1887.88  I56?4  53:2  in 
.88  82.0  76.4  in 
.88  101.6  90.7  in 


Eng 

I''"K 

Eng 


174.    Hd  15.    (9. 7...  10. 7) 
R.  A.  o"  16"  54'       Decl.  +  7°  36' 


1907.772 
.845 


270?! 
270.5 


25*58 
25.56 


1907.81  270.3  25.57 

There  seems  to  be  a  large  error  in  the  single  measure  in  1903. 


197.     O29.     (7.0... 10. 2) 

R.  A.  o"  19™  40'        Decl.  +  56°  7' 

A  and  C 

I9IO.627  4?6  22*52 


.644 
.666 


4-0 

3-7 


22.55 
22.76 


1910.65  4.1  22.61 

The  apparent  large  change  in  angle  can  not  be  real ;  probably 
error  in  early  measure. 


204.     Hd  19.     (9.6... 13. 2) 
R.  A.  o"  20™  35'        Decl.  +  7°  3' 


1907.772 
9-703 


326.5 


35"  18 
34-76 


1908.74  326.0  34.97 

No  other  measures.  The  measure  given  in  G.  C.  Part  II 
belongs  to  some  other  star. 

205.    230.     (6. 8... 8. 7) 
R.  A.  o"  20™  43'       Decl.  +  49°  19' 

A  and  C  (12.7) 

1910.818  97?77  63*06 

.838  97.75  64.13 

.856  97.83  63.81 

1910.84  97.78  63.97 

For  an  independent  value  of  the  proper  motion  of  A.  The 
measures  of  AB  (1831-1903)  give  for  the  motion  of  the  prin- 
cipal star: 

0*054    >n    268?o 

From  meridian  positions: 

Groombridge     o"oo6    in    3O?6 
The  smaller  component  of  "S,  30  may  have  some  motion. 

212.    02ior*/.     (5. 8... 9. 2) 
R.  A.oh2imi6"       Decl. +  15°  22' 

A  and  B 

I907.731     238?  10  101*47 

•750     237.92  101.50 

.772     237.88  101.55 


1907.75 


237.97 


101.51 


80 


Burnham:   Measures  of  Proper  Motion  Stars 


A  and  DM  (15°)  60 
1907.750  I54°23  275':73 

.772  154-27  276.61 


1907.76 


I54-25 


276.17 


Bandfc  (13. 7) 

1907.845  I57°64  I53"29 

.865  157-20  153.49 


1907.85 


I57.42 


153.39 


proper  motion  in  the  General  Catalogue  from  A.  G. 
Berlin  is  given  with  the  wrong  sign  in  R.  A.,  and  should  read: 


The  corrected  proper  motion  of  A  from  the  four  sets  of 
measures  by  A,  Doo  and  (3  (1866-1907)  is: 

o!'i32    in     104^7 

It  is  not  probable  that  B  has  any  motion  of  its  own.    For 
urther  certainty  the  nearest  small  star  is  connected  with  it. 


216.     H  1968.     (8.0...IO.O) 
R.  A.o*2im33s        Decl.  —  17°  4' 

A  and  B 

2^58 


1907.675 
.692 


189?! 
188.4 


2.57 


1907.68 

1911.564 
-583 
.663 


188.7 

202?6 
204.9 
2OI.9 


2-57 

3T87 
3-75 
3-6o 


1911.60 


1907-673 
.675 
.692 


203.1 
A  and  C  (11.7) 

122.70 
122.88 


3-74 

90^69 
90.91 
90.73 


1907.68 


122.77 


90.78 


The  proper  motion  of  A  from  meridian  positions  is  too  large. 
The  six  sets  of  measures  of  the  small  star  by  Aitken  and  p 
(1891-1907)  give: 

k  Measures        0^226    in    88?4 

Stumpe  0.252    in    92.1 

Porter  0.276    in    85.2 

following  later  position  will  not  materially  change  the 
value  given : 

A  and  C 


ipio.933 
11.564 
11-583 
11.663 

1911.44 


I22?47 

122.45 
123.05 
122.71 

122.67 


oo':  1 1 
00.81 
90.49 
90-19 
90.40 


228.    H623.    (10.8...  10. 9) 
R.  A.o"22m40a        Decl. +  2°  11' 

A  and  B 
1909.760  342°!  I9"82 


.763 
.780 


341.8 
342.4 


19-54 
19.30 


1909.77 

No  other  measures. 


342-1 


19-55 


H  623  (B)  and  h  23 

1909.760      24?7  46^54 

.763      24.5  46.25 

.780      24.7  45.80 


1909.77 


24.6 


46.20 


There  are  four  other  nebulae,  h  25   and  three  by  Rosse, 
closely  following. 


236.     P  1094.     (5-7-.- 9-5) 
R.  A.  o"  23™  29'        Decl.  +  59°  19' 

A  and  C  (11.5) 

1912.638            338?33  Ii9"8s 

.660            338.34  120.45 

.675            337-45  120.63 


1912.66 


338.04  120.31 


No  other  measures  of  C.    The  only  proper  motion  found  for 
the  large  star  is : 

Boss    o"o47    in     I36?7 


239.     28  Audromedae.    f5  1095.     (5. 5..  .13. 3) 
R.  A.  o"  23™  47'        Decl.  +  29°  5' 

AandC  (n.6) 

1912.638  i29?57  142^42 

.675  129.92  142.44 

.678  129.72  142.35 


1912.66 


129.74 


142.40 


Faint  star  measured  for  the  proper  motion  of  the  physical 
system.    No  other  observations. 

Auwers         o"o6r     in     I59?8 
Boss  0.066    in     143.5 


242.    12  Ceti.    H  322.    (6.0... ii. o) 
R.A.o"23m55'        Decl.  — 4°  37' 


1908.728 
.824 
.826 

1908.79 


i88?4 
190.4 
190.1 

189.6 


9^86 
9-63 
9-75 

9-75 


81 


Burnham:   Measures  of  Proper  Motion  Stars 


The  proper  motion  of  the  large  star  from  meridian  positions 
is  small  and  very  uncertain  in  direction : 

Auwers         o"oio    in    2o6?S 
Boss  o.oio    in     133.0 

Newcomb      0.017    in      9r-4 

The  corrected  value  from  the  five  sets  of  measures  on  15 
nights  (1866-1908)  is: 


246.    Espinz.     (8. 8... 9. 5) 
R.  A.o"24m3o'       Decl. +  56°  8' 


1907.750 
.788 
.791 


114:0 
114.0 
114.0 


5  74 
5.8o 

5-93 


1907.78  114.0  5.82 

The  only  other  measures  are  those  in  Part  I  of  the  Genera! 
Catalogue. 

254.    P  1158.    (6. 9... 8.3) 
R.  A.  o"  24™  55'        Decl.  — 10°  45' 

A  and  BC 
1912.695  86?83  79^26 


.717 
•755 


86.86 
86.80 


78.73 
79.21 


1912.72  86.83  79.07 

Neither  star  has  any  considerable  proper  motion. 

258.    HS45i.    (5- 7-.. 8. 5) 
R.  A.  o"  25m  3"        Decl.  +  32°  55' 


I9H.545 
.564 
.583 


85.60 
85-13 


55"85 
56.21 

56.37 


1911.56  85.21  56.14 

Not  given  in  Boss'  General  Catalogue.    No  sensible  relative 
change  since  1875. 

262.     O2i3-     (7. 8... 10. 9) 

R.  A.  o"  25™  26'       Decl.  +  36°  18' 

A  and  C  (12.5) 


1908.843 

.845 
.862 


162.9 
164.2 


29:09 
29.30 
29-30 


1908.85  163.9  29.23 

A  and  D  (10.5) 

1908.843  179-3  4>?42 
.845  179-0  4I-27 
.862  180.5 41-44 

1908.85       !/<;.<>       4I-38 

The  measures  of  these  stars  so  far  show  no  sensible  proper 
motion  in  A. 


This  is  identical  with  No.  246  of  the  General  Catalogue. 


270.     A  in.     (8. 5... 13.0) 

R.  A.  o"  26'"  oa        Decl.  —  5°  49' 

A  and  B 

1908.671  2I2?4 


.824 
.920 


208.7 
207.6 


2:19 
1.89 
1.90 


1908.80 


209.6 


1.99 


These  measures  show  that  the  small  star  has  the  same  proper 
motion  as  the  other. 

Porter    o"38    in    99° 

For  an  independent  determination  of  this  hereafter,  I  have 
measured  a  distant  star  io.7m.  The  faint  nebula  sp  in  a  low- 
power  field  is  /i  27. 

A  and  C 

1908.750  I95°37  II2'.'90 

.824  195.61  112.89 

.826  195.22  113-05 


1908.80 


195.40 


112.95 


275.     52  Piscium.    H  1982.     (5. 5... 12.0) 
R.  A.  o"  26™  18'       Decl.  +  19°  38' 


1907.657 
.673 
-675 
.692 


304.0 
303.1 
303-6 


42'.  1 5 
42.01 
41.86 
41.86 


1907.67 

1911.602 
.622 
.625 


303.6 

303°5 
302.9 
303.0 


41-97 

42^51 
42.58 
42.82 


1911.62 


303.1 


42.64 


From   the   measures  (1870-1911)  the   proper   motion   of   52 
Piscium  is: 

o'/J49    in     103  ?2 

This  is  given  from  meridian  places: 

Auwers         o''i2i     in     I09?3 
Boss  0.138    in     1 12.0 


276.     0I3IO.     (7. 3- -.13- O 
R.  A.  o"  26™  21'        Decl. +  22°  32' 

A  and  C  (12.8) 

1911.644     297?!  i6?39 

.663     297.9  16.05 

.720     297.7  15-90 


1911.67 


297.6 


82 


Burnham:   Measures  of  Proper  Motion  Stars 


A  and  D  (9.4) 
1911.644            I46?2O              g6''i2 
.663             146.31              96.44 
.720            146.35              96-16 

299.     Hd  23.     (9.  5..  -12) 
R.  A.  o"  28m  28"        Decl.  +  3°  13' 
1907.581             133  ?4                35:76 

1911.67              146.29              96.24 

.636            132.9                36.25 
.638            133.0                36.05 

From  the  measures  of  these  faint  stars  (1903-1911)  we  have 
for  the  motion  of  A  : 

AC        R.  A.  +  o"i4i        Decl.  +  0*046 
AD                     0.159                     0.066 

1907.62              133.1                36.02 

1909.760            I32?9                35:80 
•  780            133.3                35-71 
-782             133.2                3S-38 

+  0.150                 +0.056 

Therefore  the  proper  motion  of  the  principal  star  is  : 
o":6o    in    69?  5 

The  values  heretofore  given  are  too  large  : 

Stumpe       o'.'205    in    86?6 
Paris            0.235     in    90.0 

1909.77              I33-I                35.63 

The  former  measures  give  a  much  smaller  distance.     No 
other  pair  found  near  this. 

304.     238.     (8.  3...  8.  7) 
R.A.o"28m4i9        Decl.  +  58°  i' 

1908.788            I45?o                i6':87 
.804            145.5                17.00 
.826             144.5                16.93 

279.     0214.     (6.  7...  10.7) 
R.  A.  o"  26'"  29'        Decl.  +  27°  37' 
A  and  B 

1908.81              145.0                16.93 

1909.742             144?!                i6"98 
-744            144-6                16.99 
.760            144-7                16.90 

1912.583             159?!                  8^63 
.619            158.6                  8.60 
.622            159.4                8.61 

1909.75              144.5                16.96 
Certainly  unchanged. 

1912.61              159.0                8.61 

A  and  C  (12.  6) 
1912.619              84?27              59':95 
.622              84.60              60.  it 

314.     13  Ceti.    p490.     (5-  5--  -6.  2) 
R.  A.  o"  29m  4'-       Decl.  —  4°  15' 

1912.62                84.43              60.03 

No  sensible  change  in  AB  in  the  last  half-century.    No  other 
measures  of  C. 

AB  and  C  (12.5) 
1908.826              so?2                28^17 
.884              51.5                27.92 
-939              51.5                28.46 

The  proper  motion  of  A  is  too  small  to  be  certain  from 
meridian  positions. 

Boss       o"oi5    in    65  °.j 

1908.88                51.1                28.18 

1910.608              49?9                27''i6 
.627              50.1                27.64 
.666              51.  i                27.79 
.701              50.3                27.36 

281.     H  1033.     (10.3...  10.3) 
R.  A.  o"  26™  38'       Decl.  +  62°  37' 

1910.65                50.3                27.49 

1911.720              so?2                27'.'30 
-777              49-3                27.23 
•835              49-6                27.07 
•870              50.5                27.55 

1907.562                 222?6                         7l'09 

.578           224.0                6.81 
.581            223.4                6.91 

1911.80                49.9                27.38 
The  ten  positions  of  this  very  faint  star  (1877-1911)  should 

1907.57             223.3                 6.94 

1910.529            222?  i                  6'/79 
.586           224.1                6.79 

exactness  : 
o''4i6    in    95?2 

The  correction  to  the  former  values  is  small. 

1910.56            223.1                6.79 
Probably  fixed.    H  1033  is  in  h  28;  small  stars. 

Auwers           o!'397    in    93?o 
Boss                0.408    in    92.6 
Newcomb       0.409    in    92.4 

83 


Burnham:   Measures  of  Proper  Motion  Stars 


319.    A.G.6.    (8.  2..  .10.0) 
R.  A.  o"  29™  16*       Decl.  +  n°ii' 
io?7 


1906.772 
6.813 

7.502 
7-540 


11.4 
n.  I 


60729 
60.08 
60.85 
60.53 


1907.16 


II. O 


60.44 


Distance  increasing,  and  evidently  a  small  proper  motion  in 
A,  the  value  of  which  will  appear  from  further  measures. 
1892.84  io°2  58*43  in  Leip. 

1002.84  10-3  59-44  3n  Miller 


322.    242.     (7-9-.. 8.7) 
R.  A.  o"  29m  38"        Decl.  +  29°  21' 

A  and  C  (10.8) 
1909.742  205765  33768 


-744 

206.17 

33-94 

.760 

206.28 

33-49 

.763 

205.78 

33-72 

1909-75 

205-97 

33-71 

1911.622 

ao6?23 

33"i7 

.625 

206.73 

33-17 

.644 

206.81 

33-17 

1911.63 


206.59 


33.17 


In  G.  C.  Part  II,  direction  of  the  motion  of  A,  for  165^8  read 
I54°8.  The  six  positions  by  O2,  Eng,  A  and  (}  give  for  the 
proper  motion  of  the  large  star : 

0^446    in    I54?6 

From  meridian  observations : 

Porter    07449    'n     J59?8 


326.    Espin  — .    (8. 9. ..10. 5) 
R.  A.  o"  28™  17'        Decl.  +  55°  56' 
Identified  as  DM  (55°)  109. 


1907.463 
•485 


157°  I 
156.9 


87 15 
8.25 


"",-    17 


157-0 


8.20 


This  is  identical  with  No.  297  of  the  General  Catalogue.    The 
correct  place  is  given  here. 


333.     Hd  29.     (7. 8... 9. 2) 
R.A.o*3i"±        Decl.  +  i"  26'  ± 

There  is  no  bright  star  in  or  near  this  place,  and  nothing 
found  answering  the  description  at  Harvard  and  Kirkwood. 


341.     Hd3i.     (7. 6. ..ii. 5) 
R.  A.  o"  31™  56"        Decl.  —  i°  10' 

1907.636 

-675 
.810 


307.7 
307-3 
307-1 


30.40 
30.40 
30.40 


1907.71 


307-4 


30.40 


Common  proper  motion? 
If  the  principal  star  has  the  given  proper  motion  of  07087  in 
253°4.  the  two  are  moving  together. 


345.    O2(APP.)5.    (6.2... 8.0) 
R.  A.  o"  32™  4'        Decl. +  76°  1 3' 

1908.709  I43°75  i i6768 

.711  143-21  116.05 

.728  143.33  116-27 

1908.72  143-43  116.33 

The  relative  change,  if  any,  is  small.     No  proper  motion 
found  in  the  star  catalogues. 


346.    245.     (7.o...io.o) 
R.  A.  o"  32m  7'        Decl.  +  46°  18' 


1911.793 
-813 
-835 


A  and  B 

87?7 
86.8 
87.2 


13-00 
13-14 
13-34 


1911.81  87.2  13.16 

The  measures  by  2,  A,  A  and  ft  (1829-1911)  give  for  the 
proper  motion  of  A : 

07052    in    275?9 

The  meridian  positions  give : 

Greenwich    07045    in    268^7 

A  faint  star  is  connected  for  a  further  independent  value  of 
this  movement : 

A  and  C  (13.0) 

1911.813  26i?3o  no725 

.835  260.70  109.67 

.870  261.33  109-44 


1911.84 


261.11 


109.80 


349.     O2  16.     (6. 3...  10. 8) 
R.A.oh32ni32'        Decl.  +  48°  42' 


1907-523 
•  540 
.562 


22?8 

23-3 

22.6 


13-79 
13-59 
13-45 


1007.54 


22.9 


I3.6l 


Some  change  from  proper  motion.  The  proper  motion  of  A 
(Groombridge  113)  is  given: 

Groombridge       o7on  in     if*)°.7 

Boss  0.019  in     133.2 


84 


Burnham:   Measures  of  Proper  Motion  Stars 


354.     8  Andromedae.      f>  491.     (3-4---I2-5) 
R.  A.  o"  3Jm  54°        Dec!.  +  30°  12' 


I907-S23 
•  S40 
.578 
.692 


300.0 
299.7 
299.1 
299-4 


28.19 
28.25 
27.97 


1907-58 

1910.701 

.703 

-739 


299- S 

299°9 
298.9 
301.2 


28.17 

28^04 
28.04 
28.01 


1910.71  300.0  28.03 

The  proper  motion  of  8  Andromedae  is: 

Auwers         o'.'i47    in     I23?o 
Boss  0.163     in     121. 8 

As  it  is  certain  now  that  the  small  star  is  moving  with  the 
ither,  I  have  measured  a  third  and  much  fainter  star : 

A  and  C  (15.2) 

1910.742  I09?8  47"SO 
.760  111.5  47-55 
.780  iio.S  47-52 


1910.76 


1 10.7 


47-52 


361.     a  Cassiopeiae.     (2.0. ..14. 5) 
R.  A.  o"  33™  42s       Decl.  +  55°  53' 

A  and  C  (i3-5) 
1908.785  105?!  38*30 


.804 


103-9 
105.4 


38.13 
38.39 


1908.79      104.8      38.27 

A  andD  (9.5) 

1908.655  280^26  64^16 

.673  280.22  64.06 

.689  280.09  64.23 

.692  280.02  64.06 

1908.68 280.15  64.13 

From  the  measures  of  D  by  OS  and  [5  on  29  nights,  the  real 
proper  motion  of  the  large  star  is : 

o"o54    in     ii6?4 

It  is  specially  important  that  the  measures  of  AC  should  be 
continued. 
The  proper  motion  is  given  from  meridian  observations : 

Auwers         o"o4S    in     I42?2 

Newcomb     0.061     in     121.0 

Boss  0.060    in     121. 2 


362.     H  1044.     (8.5... 8. 6) 
R.  A.  o"  33™  44s        Decl.  +  43°  3' 


1907.523 
•  540 
.581 


3I9°4 
319-0 
319.0 


21-97 
21.88 


I907-55 


3I9-I 


21.86 


No  change. 


378.    H  1046.    (10.6..  .11. o) 
R.  A.  o"  36'"  25'        Decl. +  6i°8' 

A  and  B 
1910.605  65?!  i6?i3 


.608 
.627 


66.3 
67.4 


16.17 
16.04 


1910.61  66.3  16.11 

A  and  C  (10.8) 


1910.605 
.608 
.627 


334-2 
334-2 
333-9 


52-82 
52-86 


1910.61 


334-1 


52-85 


H  1046  is  in  /»  52.    In  G.  C.  Part  II,  angle  of  AC,  for  35S?o 
read  335°°- 

384.    253r<?/.     (8.0... 8. 7) 
R.  A.  o"  37'"  18"        Decl.  — i°  32' 

A  and  B 
1907.845  340?  4  28"8o 


8.000 
8.044 


341-0 
340.8 


28.89 
28.38 


1907.96  340.7  28.69 

The  five  positions  by  Eng.,  A  and  fJ  (1891-1907)  give  for  the 
proper  motion  of  the  primary : 

0*252    in    2I2?7 

This  movement  from  meridian  observations  is  somewhat 
uncertain  in  amount. 

Porter  o"4is    in    2i6?6 

Kustner  0.375    m    221.7 

A.  G.  Nico.         0.301     in    228.4 
Bauschinger        0.453    in    223.9 

The  companion  star,  however,  is  large  enough  to  have 
possibly  a  small  motion  of  its  own ;  and  I  have  connected  with 
it  a  third  star.  A  set  of  measures  a  few  years  hence  will  show 
at  once  whether  or  not  B  is  fixed. 

BandC  (12.5) 

1907.845  25?03  128^39 

8.000  24.18  128.31 

8.597  26.08  128.08 


1908.15 


25.10 


128.26 


391.      21  Cassiopeiae.    H  N.  122.     (5-7- • -9-7) 
R.  A.  o"  37™  44'       Decl.  +  74°  20' 


1910.605 
.608 
.627 


159-95 
160.25 


35-34 
35-63 

35-95 


1910.61  160.01  35.64 

Further  measures  are  required  to  show  whether  or  not  these 
stars  are  moving  together. 
The  proper  motion  of  21  Cassiopeiae  is  small. 
Auwers         o'foso    in    224^4 
Newcomb     0.033    in    217.2 


85 


Burnhatn:   Measures  of  Proper  Motion  Stars 


395.    o  Cassiopeiae.    (5  231.     (4. 9... 12.0) 
R.  A.  o"  38™  2'        Decl.  +  47°  38' 

1911.468  3<>3°oo  32^72 

•509  303.50  32.71 

.529  302.00  32.76 


1911.50 


303-13 


32-73 


No  sensible  change  since  1888.    The  proper  motion  of  the 
large  star,  if  any,  is  very  uncertain. 

Auwers   (F.  C.)        o!'o:6  in     I9O?7 

Auwers   (Cor'd)        0.018  in     146.0 

Boss  0.023  in     102.7 

Newcomb  0.029  'n     102.6 


397.     A.G.  7-     (9-7--.II.O) 
R.  A.  o"  38"  8s       Decl. +  11°  56' 


1908.750 
.788 
.824 


317.5 
319.0 


21^52 
21.32 
20.91 


1908.79    318.3 

Early  measures  disagree  in  distance. 


21.25 


400.    H  6 

This  is  identical  with  the  last  preceding  pair,  A.  G.  7. 

401.     0492.     (6.0...  12.0) 
R.  A.  o"  38™  27'    Decl.  +  54°  34' 

A  and  B 
1909.821  iso?8  2?29 

A  and  C  (10.9) 


1909.818 
.821 
•838 


23.23 
23.53 


88^30 
88.28 
88.44 


1909.83 


23-54 


88.34 


Distant  star  measured  for  proper  motion  of  A,  which  is 
given  * 

A.  G.  Harv.        o"o66  in    3i7?3 

Boss  0.027  in    250.3 

Groombridge       0.020  in    232.8 

There  is  no  change  in  AB. 


403.     Arg  2.     (8.0...  9.0) 
R.A.oh38"159'       Decl.  +  54°  20' 

A  and  B 

1907.463  n8?3  I3r38 

.465  118.9  13.15 


.485 


118.8 


12.06 


1907.47 


118.7 


13.16 


A  and  C  (12.5) 
1907.463  93?s  26"2 

The  measure  by  Espin  of  this  star  is  from  B. 


408.     H  7.     (IO.O...H.3) 
R.  A.  o"  39"'  14'        Decl.  +  1  1  °  55' 


1908.750 
.788 
.824 


308.4 
308.0 


21.12 
21. 06 
20.97 


1908.79 


308.3 


21.05 


This  is  DM  (11°)  90.  Error  of  180°  in  Herschel.  No  other 
measures.  No.  397,  which  is  np  H  7,  is  a  very  similar  pair  in 
all  respects. 

415.     21,  App.  I.     (6. 7... 6. 7) 
R.  A.  o"  39™  58'        Decl.  +  30°  17' 


1907.638 
-673 
.675 


51.50 
51.76 


46^56 
46.41 
46.58 


1907.66  51.64  46.52 

The  only  change  since  1834  is  a  possible  decrease  in  the  angle. 

417.    HV.82.    (7. 7... 8.0) 
R.  A.  o"  40™  38'        Decl.  +  50°  27' 

A  and  B 
1909.742  76^26  51^27 


-744 
.760 


76.57 
76.32 


51.44 
51-34 


I909.75 


76.38 


5L35 

A  and  C  (12.2) 

1909.742  280^62  IO4"72 

.744  280.53  104.32 

.760  280.68  104.75 

1909.75  280.61  104.60 

Small  star  measured  to   determine  hereafter  whether  the 
proper  motion  is  in  A  or  B. 

The  apparent  motion  of  B  from  the  measures  (1875-1909)  is: 
o"oso    in    ss?2  (±  180°) 


432.     Hd35-     (8.7... 9-3) 
R.  A.ob42m28"       Decl.  — 2°  25' 


1909.627 
•  703 
.706 


3S.o 
35.8 


6796 
6.96 
6.91 


1909.68 


35.8 


6.94 


The  nebula  about  35'  distant  sf  is  diffused  but  brighter  in  the 
middle,  so  that  the  bisection  is  fairly  exact. 


86 


Burnham:   Measures  of  Proper  Motion  Stars 


h  67  and  SD  (2°)  in 
1909.627  H3°8  «9"47 

.703  113.6  89.41 

115.0  89.65 


.706 
1909.68 


114.1 


89.51 


437.     02(App.)9-     (7-0... 7- 7) 
R.  A.  o"  43"' 2is        Dec!. +  29°  48' 

A  and  B 
1908.652  237!o7  97"86 


•  65S 
.673 


237-30 
237-45 


97-45 
97.51 


1908.66 


237.27 


97.61 


:  measures  of  A  and  P  in  1901  give  the  relative  motion  of 
.  as  in  Part  II  of  the  General  Catalogue: 
o"2i7    in    92?! 


1908.652 
.655 
.673 


A  and  C 
323°o8 
323.37 
323-50 


I07"39 
107-33 

107.33 


1908.66  323-32 

s  only  other  measure  of  AC  is  : 
1892.03  324^52  105770 


107.35 


Eng. 


Assuming  C  to  be  fixed,  as  it  probably  is,  the  proper  motion 
of  A  from  the  two  positions  is : 

o"i67    in    90?5 

To  determine  this  hereafter,  I  have  measured  a  small  star 
from  C : 

C  and  c  (9.6.. .11.1) 

1908.652     2i8?8       I9!'5o 
.655     220.1       19-74 

.673  220.0  19-73 

1908.66          219.6  19.66 

The  meridian  values  appear  to  be  too  large : 
Stumpe  0^322    in     ios?3 

Porter  0.263    in     100.3 

Rechenberg          0.267    in     103.7 


444.     263.     (8.2. ..ii. 2) 
R.  A.  o"  43™  56'        Decl.  +  11°  11' 

A  and  B 
1907.879  23i?S7  18770 


7.961 
8.000 


231.68 
231.60 


18.49 
18.51 


231.62 


18.57 


1907.95 

From  the  measures  of  AB  the  principal  star  has  a  prope 
motion  of : 

o7i62    in    87?7 


B  and  C  (n.6) 

1007.879  3i3°73  124*71 

7.961  314-30  124.37 

8.000  313-70  124.13 


1907.95 


313-91 


124.40 


The  third  star  C  is  connected  for  the  purpose  of  determining 
hereafter  whether  any  of  the  proper  motion  of  the  system  is 
n  the  small  star  B.  The  later  measures  indicate  no  change  in 
BC: 

1912.545  3i3°83  124732 

.562  314-08  124.42 

.619  3I3.73  124.79 


1912.57 


313.88 


124.51 


453.    H  628. 
R.  A.  o"  45m  25' 


(7- 7-. .ii-S) 
Decl.  +  33°  14' 


1911.777 
.813 
.832 


68?93 
68.95 
69.18 


4276i 
42.56 
42.36 


1911.81  69.02  42.51 

The  only  other  measures  are  recent,  and  show  no  change. 


458.    p  497.    (6.0... 9.0) 
R.  A.  o"  45™  55'        Decl.  +  6oe 

A  and  B 

1908.652  I7o?68 

.655  170.93 

.673  171.12 

.689  171.06 


126768 
126.86 
127.20 
127.20 


1908.67 


170.95 


126.98 


The  six  positions  by  Eng.  and  (3  give  for  the  proper  motion 
of  the  large  star  (Bradley  90)  : 

o7i8i    in    340?5 

Other  values  from  meridian  observations  are  : 
Auwers         07152    in    328?  9 
Porter  0.175    in    331.2 

Boss  0.188    in    337.5 


467.     270.     (7.0...IO.O) 
R.  A.  o"  46m  52s        Decl.  +  52°  2' 

A  and  C 

1909.742  I48?55  78^95 


•  744 
.760 


148.77 

148.52 


78.74 
78.83 


1009.75 


148.61 


78.84 


87 


Burnham:   Measures  of  Proper  Motion  Stars 


C  and  c  (10.6.  .  .11.0) 
1909.742  88?9 

•744 


1909.74 


I-S2 


No  other  measures  of  these  stars. 

No  change  in  AB.    The  proper  motion  of  A  is  given : 

Greenwich      o"o8i     in     105^7 


475.     u'  Cassiopeiae.    P  1098.     (6.0...  14.0) 

R.  A.  o"  47™  53"        Decl. +  58°  19' 

A  and  C(i2.8) 


1912.504 
•  507 

•545 


127.60 
127.78 


93"69 
93-54 
93-54 


1912.52  127.84  93-59 

The  amount  of  the  movement  of  the  large  star  is  uncertain 

Auwers  o"io6    in    22i?2 

Boss  0.053    in    214.1 

Groomhridge       0.061     in    227.4 


479.     66  Piscium.    OS  20.     (5. 9... 7.0) 
R.  A.  oh  48™  14'        Dec).  +  18°  32' 

AB  and  C(i2.8) 

1912.562  9?72  150748 

•619  9-53  151-05 

9-64  151.13 


.622 
1912.60 


9-63 


150-89 


For  the  proper  motion  of  the  binary  system.     This  is  un- 
certain from  the  star  catalogues. 

Auwers         0^017    in    246?o 
Boss  0.026    in     119.8 


486.    H629.    (8. 8... n. 3) 
R.A.o*48m59'        Decl.  +  33°  54' 

A  and  B 

1907.638             70!  7  10^58 

.673             71.4  11.02 

.675             69.5  10.78 


1907.66 


70.5 


10.79 


A  and  C  (8.7) 

1907.638  254^78  70^41 

.673  254.50  70.61 

.675  254.40  70.58 

1007.66  254.56  70.53 

H2's  angle  of  AC  requires  a  correction  of  180°. 


488.     Y  Cassiopeiae.     P  1028.     (2.o...ii.o) 
R.  A.  o"  49™  28"        Decl. +  60°  4' 

A  and  C  (13.0) 

1911.663     347-88      52731 
•701     347-43      52.22 

.720     347-85 52.44 

1911.69  347-72  52.32 

From  the  six  positions  on   17  n  by  A,  Doo,  and  P  (1879- 
1911)  the  corrected  proper  motion  of  y  Cassiopeiae  is: 
07026    in    97?8 

The  results  from  meridian  observations  cover  a  wide  range 
in  direction : 


Auwers 
Rad(i8oo) 
Newcomb 
Boss 


0:027  in 

0.018  in 

0.027  in 

0.030  in 


134-3 
147.1 
100.9 
93-8 


489.     P  1099.     (6.  i... 6. 8) 
R.  A.  o"  49-°  34'        Decl.  +  59°  43' 

AB  and  €(13.5) 

1910.605  I55°68  41720 

.608  154-30  41.40 

•627  155-83  41-46 


1910.61 


155-27 


The  close  pair  is  in  rapid  motion.     Third  star  for  proper 
motion;  this  from  meridian  positions  is: 

Groombridge       07031     in     IO5°O 
Boss  0.026    in      90.0 


497.     u  Andromcdae.     H  1057.     (3. 9... 13.0) 
R.  A.  o*  50™  6'       Decl.  +  37°  51' 

A  and  C  (11.5) 
1909.818  I22?oo  36^46 


.820 
-838 


122.90 
123-90 


36.07 
36.10 


1909-83  123.23  36.21 

A  and  B  (13.0) 

1909.838  309?io  40767 

10.627  309.38  40.71 

10.666  309-73  40.65 


1910.38 


309-40 


40.68 


From  the  measures  of  C,  the  brightest  of  the  companions,  we 
have  for  the  proper  motion  of  fi  Andromedae: 
07149    in    57?8 

The  measures  of  both  should  be  continued  in  this  interest. 
Other  values  from  the  catalogues  are : 

Auwers  (Brad.)  0^176    in    73?8 

Newcomb  (F.  C.)       0.158    in    79.1 
Boss  0.154    in    79-9 


Burnham:   Measures  of  Proper  Motion  Stars 


519.    2  80.    (7.  8...  8.  2) 
R.  A.  o"  S3"1  15"        Dec!.  +  o°  8' 

A  and  B 
1907.961            32o°4               2i".74 
8.000            320.1                21-75 

539.    Ho  493.    (6.  5...  12.  5) 
R.A.ohs6m4"        Decl.  +  27°  6' 

1908.845              I9?4               33"6o 
.862              18.2               33.80 

1908.85               18.8               33.70 

Agrees  in  distance  with  my  former  measures.     No  proper 
motion  found  for  the  large  star  in  the  catalogues  examined. 

542.     39  Andromedae.    H  1064.     (6.1.  ..12.  4) 
R.  A.  o"  56™  10'       Decl.  +  40°  42' 

1909.802               3?6s             20^30 
.818               5.50             20.65 
.821               4.10             20.23 

1907.98              320.2                21.74 

B  and  C  (10.0) 
1907.845            258?  10            i77"88 
.865            258.02            177.98 
.961            258.15            178.24 

1907.89             258.09            178.03 

The  proper  motion  of  A  from  meridian  positions  is  given  : 
Glasgow               0^193    in    229?6 
A.  G.  Nico.         0.127    in    225.0 

The  measure  of  B  gives  a  much  smaller  value  : 
o"ioo    in     I95?o 

The  third  star  is  connected  for  the  detection  of  any  proper 
otion  in  B. 

526.    2  81  rej.     (7.  5...  10.3) 
R.  A.  o"  53™  56'        Decl.  —  2°  40' 

1911.835              67?6                17^59 
.870              68.3                17.49 
.931              67.1                17.61 

1909.81                 4.42             20.39 

The  only  other  measures  are  of  recent  date.     The  proper 
motion  of  the  large  star  is  given  : 
Auwers         0*046    in    259?9 
Boss              0.024    m    245.1 

545.    ^83  rej.    (8.o...ii.o) 
R.  A.  o"  56™  30"        Decl.  +  49°  4°' 

1908.559            3I2?6                21^97 
•  573            3U.6               21.89 
•  597            312.9                21.90 

1911.88                67.7                17.56 
The  only  other  measures  are  recent. 

528    282.     (8.  3...  9-3) 
R.  A.  o"  54™  26*        Decl.  +  8°  50' 

A  and  C  (10.0) 
1908.843            2i4?37              74"55 
.845            214.00              74.64 
.884            213.25              74.99 
.920            214.03              74.60 

1908.58              313.0                21.92 
The  prior  measures  are  of  late  date. 

553.     26  Cell.    S  84.     (6.6.  .  .9.0) 
R.  A.  o"  57"'  38'        Decl.  +  o°  43' 

A  and  C  (13.2) 
1009.838            2ao?83             I07"37 
.936            290.65             106.96 
.953            289.89            107.38 

1908.87              213.91              74.69 

C  and  D  (ii.o) 
1008.843            ip6?9               io"86 
.884            195.9               11.07 
.920            197.9               10.87 

1909.91              290.46            107.24 

Distant   star   measured    for   an    independent   value   of   the 
common  proper  motion  of  AB.    This  is  given  : 
Auwers        o!'iO2    in    109^0 
Boss              0.123    in     106.0 
Porter           0.114    in     106.3 

556.     ^  85  rej.     (8.  2...  10.  2) 
R.  A.  o"  58™  20"        Decl.  —  5°  57' 

A  and  B 
1910.720            I59°4                29^26 
.760            159.8                29.21 
•777            158.9                29.21 

1908.88             196.9               10.93 

There  is  error  in  the  angles  given  in  G.  C.  Part  I  of  180° 
i  the  first,  and  90°  in  the  other.    No  apparent  change  in  either. 

530.     Espin  45.     (7.  5...  11.  5) 
R.  A.  o"  54™  32'       Decl.  +  48°  54' 

1907.638            245?4                 7^99 
.692            244.9              *8.07 
.695            244.7                  7-92 

1907.67              245.0                 7.99 
The  only  other  measures  are  given  in  G.  C.  Part  I. 

1910.75              159.4                29.23 

89 


Burnham:   Measures  of  Proper  Motion  Stars 


A  and  C  (10.8) 
1910.720            ii6?9                34?i5 
.760            117.5                34-37 
•777             "7-2                34-09 

570.     V  Fiscium.    288.     (4.  9...  5.0) 
R.  A.  o"  59"'  15"        Decl.  +  20°  50' 

B  and  C  (10.8) 
1910.777             io7?32              72l'79 
.780            107.46              73.14 
.838            107.63              73.25 

1910.75              117.2                34.20 
Only  recent  measures  of  this. 

• 

558.    H  1065.    (9.4..  .11.4) 
R.  A.  o"  s8m  32'       Decl.  +  27°  28' 

1908.520            is8?s               23^34 
•  537            158.8               23.37 
•  573             158-6                23.55 

1910.80              107.47              73.o6 

For  the  common  proper  motion  of  AB.    For  this  we  have  : 
Auwers         o"o33    in     117^0 
Boss              0.055     in     108.2 

573.     a"  Piscinm.     8393.     (6.8.  ..9.2) 
R.  A.  o"  59m  35'        Decl.  +  31°  32' 

A  and  B 
1909.703            293?98              s6'.'8o 
.706            293.83              56.41 
•725            293.65              56.45 

1908.54              158.6                23.42 

This  is  DM  (27°)  171,  and  not  H63I  which  could  not  be 
found. 

560.    286.    (8.0...  8.  7) 
R.  A.  oh  58'"  43"        Decl.  —  6°  7' 

A  and  B 
1907.636            I54?8               i3':so 
-657            154-2               13-50 
•675            154-8               13.45 

1909.71              293.82              56.55 

In  Part  II  of  the  General  Catalogue  the  proper  motion  of 
Auwers  belongs  to  another  star.     The  motion  is  small  and 
uncertain. 
Auwers         0*007    in    203^2 
Boss              0.020    in     165.0 

About  15'  distant  sf  is  h  86;  a  little  brighter  in  the  center. 

h  86  and  star  ii.4m 
1909.703            204?35              Q2"4 
.706            204.97              91.0 
.725            204.55              90.7 

1907.66             154.6               13.48 

A  and  C  (n.o) 

1907.6/5             37°io            108^56 
.692             37.13            108.46 

1907.68               37.11            108.51 

As  the  components  of  2  86  are  of  about  the  same  magnitude, 
the  proper  motion  may  be  in  either. 

561.     72  Piscinm.     H  1068.     (5.  9...  12.  5) 
R.  A.  o"  58"-  44'       Decl.  +  14°  18' 

1908.652           26o?86             ss?27 
.655            260.17             54.72 
.671            261.20             55.43 
.673            261.62             55.29 

1909.71              204.62              91.4 

The  only  other  measure  is  : 
1885.14           2o8?o           94".  5            in            Eng. 

A  86  is  double  ;  the  other  by  Rosse.    They  point  to  the  small 
star  measured  above  : 
1909.703            203?5                35^85 
•706            203.1                35.83 

1009.70              203.3                35-84 

574.     77  Piscium.    290.     (5.9.  ..6.8) 
R.  A.  o"  59m  37"        Decl.  +  4°  16' 

A  and  a  (13.7) 
1910.760            313?!                31^67 
.856            313.2                31.76 
•  895            3".  6               31.01 

1008.66             260.96             55.18 

1911.835            26o?33              55^26 
.870            260.93              55.48 
.928            260.40              55.60 
•931            260.00              55.14 

1911-89              260.41              55.37 

From  the  four  positions  of  the  faint  star  (1877-1911)  we  have 
a  fairly  accurate  value  of  the  proper  motion  of  72  Piscivm: 
o"o8i    in    24?9 

From  meridian  observations  : 
Auwers         0^050    in      22?4 
Porter           0.050    in    344.8 
Boss              0.044    m    356.2 
Newcomb      0.054    in    358.9 

1910.84             312.6               31.78 

A  and  b  (13) 
1910.760            352^8                76^97 
•856            351-9                77-44 
•895            351-5                77-09 

1910.84              352.1                77.17 

Burnham:   Measures  of  Proper  Motion  Stars 


A  and  B  have  a  common  proper  motion.    No  other  measures 
:  the  faint  stars : 

Auwers         o"i2O    in     185^7 

Porter  0.117     in     180.0 

Boss  0.114     m     171.0 


576.    HIV  66.    (6. 6... 10. 2) 
R.  A.  o"  S9m  59s        Dec!. +  52°  Si' 

A  and  B 
1907.848  7S?4  22?I3 


.867 
.879 

75-  4 
75-0 

22.  37 
22.13 

1907.86  75-3  22.21 

A  and  C  (n.o) 
1909.570  I22?ss  198797 


.589 
•592 


122.40 
123.20 


i9»-95 
199.14 


1909.58 


122.72 


199.02 


From  meridian  observations  the  large  star  has  no  sensible 
oper  motion  : 

Groombridge      o''oo6    in    98^9 


The  only  other  measure  is : 

1880.30  I2I?Cj6 


2n 


Bl. 


578.     SSpn?/.     (9. i. ..9-3) 
R.  A.  i"  om  13'        Decl.  +  79°  42' 


1907.695 
.711 
•  731 


34i°7 
341-5 
340.8 


I5'.'77 
15-83 
I5-76 


1907.71  341.3  15.79 

Both  stars  in  A.  G.  Kasan,  the  positions  giving: 
1869.5  347°4  I5"27 

DM  (79°)  32,  in  the  field  closely  following,  is  a  similar  pair : 
1907.711  3s8?4  i6':77 

-731  357-0 


1907.72 


357-7 


16.08 
16.42 


580.     O2(App.)n.     (7. 7... 8. 2) 
R.  A.  i"  om  25"        Decl.  +  38°  o' 

1907.692  I59?5O  62"44 

•695 
.711 


159-75 
159-43 


62.14 
62.19 


1907.70  I59-56  62.26 

One  of  these  stars  has  a  proper  motion  of : 
o':o6i     in    270°  (±  180°) 

Aitken  has  recently  found  the  principal  star  to  be  a  very  close 
air  (=  A  1516)  : 

1907-71  334°7  ofi6  311  A 


589.    H 1070.    (ii.o...ii.3) 
R.  A.  i*  o'"  5C        Decl. +  6i°32' 

The  pair  measured  for  H  1070  is  in  h  83  and  is  doubtless  the 
one  observed  by  Herschel,  as  there  is  nothing  else  near  agree- 
ing so  well  in  angle. 

1910.529  97?4  ii76s 

The  largest  star  in  h  83  is  a  2"  pair. 

605.     (3  Andromedae.     (2.1. ..14.0) 
R.  A.  i"  3°  os        Decl.  +  34°  59' 

A  and  C  (12.5) 

1909.531     270^55  89793 

.570     270.52  -  90.69 

.589     270.64  89.71 


1909.56      270.57      90.11 
A  and  D  (11.7) 


1909.531 
.570 
.573 


142.33 
142.52 


85.26 
85-94 


1909.56      142.30  85-57 

A  and  E  (10.9) 

I909-53I             304?75  132727 

.570            304-85  132.83 

•589            304-38  133-10 


1909.56 


304-66 


132.73 


A  and  F  (n.o) 

1909-570  8s?92  I55"i4 

-573  85.98  154-82 

.589  86.15  155-27 


1909.58 


86.02         .  155.08 


Rejecting  AF  because  the  early  position  is  from  a  single 

night,  we  have  from  the  other  stars  for  the  proper  motion  of  A : 

AC       R.  A.  +  07172        Decl.  —  o7o8s 

AD  0.170  0.084 

AE  0.177  0.137 

+  0.173  — 0.102 

Therefore  the  corrected  proper  motion  of  fi  Andromedae  is  : 
o"20i     in     I20?5 

This  is  given  from  .meridian  positions : 

Auwers   (corr'd)  07199  in  I2i?8 

Newcomb  (Stand.)  0.223  in  123.2 

Newcomb  (Fund.)  0.216  in  122.8 

Boss  0.216  in  122.2 

About  14'  p  and  5'  n  is  h  89  which  has  a  good  central  con- 
densation. 

h  89  and  star  12.5  m 
1909.531  I2?6o  75764 

•570  12.75  74-52 

•  589 13-25 75-21 

1909.56  12.87  75.12 

An  earlier  position  is  : 

1880.52  I4?o  7573  2n  Wn. 


Burnham:   Measures  of  Proper  Motion  Stars 


609.    0223.    (7. 5... 8.0) 
R.A.  i*  3"  2"       Decl.  +  51°  6' 

A  and  B 
1909.818  191 ?7  I4"6o 


.821 
.838 


191.6 
190.8 


M-S3 
14.61 


1909-83 


191.4 


I4-58 


One  of  the  proper  motions  from  A.  G.  Harv.,  given  in  Part 
II  of  the  General  Catalogue  is  manifestly  wrong,  since  there 
is  no  relative  change  in  the  last  fifty  years.  I  have  therefore 
measured  a  third  star  for  verification  of  the  proper  motion, 
if  any,  in  AB. 

A  and  C  (12.0) 

1909.818  93-93  49"§9 

.821  94.00  50.57 

.838  94-58  49-70 


1909.83 


94-17 


50.05 


644.    0226. 
R.  A.  i"  6m  23" 


(6.2. . .IO.O) 

Decl.  +  29°  26' 


There  is  no  star  in  the  Madlcr  place.    I  have  measured  one  of 
several  small  stars  in  the  field. 


A  and  C  (12.0) 


1910.856 
-895 


341-45 


"3-47 


1910.87  341.57  113.89 

The  star  referred  to  by  Madler  is  undoubtedly  C  of  O2  30. 

647.    <t>  Fiscium.    299.     (4.7...io.i) 
R.  A.  i"  7"'  14'        Decl.  +  23°  57' 

A  and  C  (13.0) 

172^67  143^78 

144.00 
I44-3I 


1912.638 

.675 
.678 


173-15 
172.65 


626.    H634.     (6.5.. 

.n.o) 

R.  A.  i  "4" 

36'       Decl. 

+  8°  55' 

1909.936 
10.570 
10.586 

260?23 

260.23 
260.20 

39*13 
39.17 
39-25 

1910.36 

260.22 

39-18 

1912-583 
.622 
-638 

26o?03 
259-64 
258.00 

39*17 
39-34 
39-26 

1912.61 

259-52 

39.26 

From  the  measures  of  the  faint  star  (1879-1912)  the  proper 
motion  of  A  is : 


1912.66  172.82  144.03 

No  material  change  in  AB  since  1832.    The  proper  motion  of 
<t>  Piscium  is  uncertain  from  the  catalogue  positions : 
Auwers         o''oi8    in     l8o?o 
Boss  0.046    in     151.9 


649.    H202&    (6. s... 7-2) 

R.  A.  i"  7m  36"        Decl.  +  73°  23' 

A  and  B 


1908.709 

.711 
.728 

203.97 
203.75 

61:38 

6i.ro 
61.05 

1908.71 

203.84 

61.18 

Measures 
Porter 


0^233    in    2376 
0.258    in     17.7 


638.    H2026.    (8.6.  ..it. o) 
R.  A.  i"5m421       Decl. +  4°  15' 

A  and  B 
1910.838  3os?6  io''i2 


.856 

305.0 

10.55 

1910.85 

305.3 

10.33 

1910.838 
.856 
.893 

A  and  C  (9.0) 
58?o8 
57-80 
57-88 

231  "39 
231  .  16 
231.24 

1910.86 

57-92 

231.26 

It  is  now  certain  that  A  and  B  are  moving  together,  and  the 
large  change  in  C  is  due  to  that  movement.  (See  G.  C.  Part  II, 
pp.  294,  1058.) 


The  proper  motions  of  these  two  stars,  Groombridge  267  and 
266,  are  given  in  the  Greenwich  Catalogue  for  1890: 
A        o"o37    in     iO4?o 
B        0.032    in     121. 8 

There  has  been  no  relative  change,  and  therefore  the  proper 
motions  must  be  exactly  the  same.  For  a  better  determination 
of  this  motion  hereafter,  I  have  measured  a  third  star : 

BandC  (12.2) 


1908.709 

2io?6o 

47^08 

.711 
.728 

209.47 
210.68 

47.20 
46.21 

1908.71 

210.25 

46-83 

652.    0228.    (7.0... 8. 5) 
R.  A.  i"  7"'  53"        Decl.  +  80°  13' 

A  and  B 
1908.728 


•  731 
•750 


306.3 
302.5 


0.67 
0.85 


1908.74 


305-2 


0.81 


Burnham:   Measures  of  Proper  Motion  Stars 


AB  and  C  (7.0) 
1908.709              25?8s             I3o"20 
.711              25.60            130.36 
.728              25.82             130.11 

For  greater  certainty  I  have  connected  another  faint  star  : 

D  and  E 
1908.709            355°72              97"96 
.711             355-37              97-52 

1908.72                25.76            130.22 

.728            355-02              98.02 

CandD(n.o) 
1908.709            I56°6o              66'.'48 
.711             I55-83              66.55 
.728            I5S-7S              66.60 

1908.71              355-37              97.83 

E  and  e  (n  .1.  .  .13.0) 
1908.728              54?7                io"i7 
.750              53-0                10.30 

1908.72              156.06              66.54 

In  the  measures  by  Dembowski,  C  is  treated  as  the  primary. 
As  printed  in  Part  I  of  the  General  Catalogue  it  is  therefoie 
180°  in  error. 
The  measures  of  C  do  not  indicate  any  material  change,  and 
therefore  if  the  proper  motion  given  in  Part  II  is  correct,  the 
three  stars  have  the  same  movement.    To  settle  this  hereafter, 
I  have  measured  a  fourth  star. 

1908.74                53-8                10.23 

673.     HI077.     (8.  i...  10.  9) 
R.  A.  i"  iora  42"        Decl.  +  44°  o' 

1908.711            294?8                38^77 
.750            294.7                38.6o 
.766            294.7                38.30 

658.     H2030.     (9.0...  12.  5) 
R.  A.  ih9'"3is        Decl.  +  53°7' 

A  and  B 
1908.728              48°o                24^12 
.750              48.9                24.02 
.766              49.2                23.98 

1908.74              294.7                38.56 
No  other  measures. 

686.     Hd47 

The  pair  measured  for  this  is  evidently  Hd  48  (No.  694). 
Fox  finds  no  other. 

1908.75                48.7                24.04 

A  and  C  (9.2) 
1908.728            I93?2               38T66 
.750            193.2                38.62 
.766            193-6                38.69 

690.    H5453.    (8.0...  10.  i) 
R.  A.  ihi2m29"       Decl.  —  i  °  29' 

A  and  B 
1907.540            2o8?8                27^74 

1908.75              193.3                38.66 

A  and  C  are  respectively  DM  (52°)  297  and  (53°)  266;  and 
the  R.  A.  should  be  as  given  here.    The  only  other  measures  are 

.636            208.9                27.44 
.638            208.9                27.72 
.845            208.8                27.48 

those  given  in  the  General  Catalogue. 
672.     2  102.     (7.0...  8.  2) 

1907.66              208.85              27.60 

A  and  C  (12.2) 
1907.845              27?o8            242^36 
8.000             27.32            243.00 

R.  A.  i"  ioro  40"        Decl.  +  48°  23' 

AB  and  C  (8.4) 
1908.709            225?5                io"is 
.711            224.2                10.20 
.728            223.7                10.10 

1907.92               27.20           242.68 

It  is  now  certain  that  A  and  B  have  the  same  large  proper 
motion.    The  third  star  is  connected  for  an  independent  value 
of  this  motion  hereafter. 
Porter                  o''499    in     121  ?4 
A  G  Nico          o  447    in    115  i 

1908.71              224.5                10.15 

AB  and  D  (10.8) 

1908.709              62^85              27^03 
.711              63.07              27.03 
.728              62.48              27.16 

691.    </>  Cassiopeiae.    H  III.  23.     (5.  2.  ..12.  3) 
R.  A.  i"  12™  32"        Decl.  +  57°  36' 
A  and  D  (10  6) 

1908.71                62.80              27.07 

The  components  of  the  triple,  A,  B  and  C  have  a  common 
proper  motion.    This,  from  the  measures  of  D  (1832-1908),  is  : 

1909.458            287^22             179^08 
.493            287.37             179.00 
.496            287.40            179.07 

o"o45     in     ioo?6 

1909.48              287.33             179-05 

All  the  other  measures  of  the  three  principal  stars  are  given 
in  G.  C.  Part  II. 


The  only  other  measure  is : 

1880.40  287^44  I79"oi 


2n 


Bl. 


93 


Burnham:   Measures  of  Proper  Motion  Stars 


Evidently  the  large  star  has  no  sensible  proper  motion.    It 
is  on  the  border  of  the  cluster  h  97. 
Auwers         o"oio    in    204?! 
Boss              o.on     in      62.5 

AB  and  D  (10.5) 
1909.458            i82?s8           248*23 
.493            182.70           248.19 
.496            182.57           247.92 

697.    35  Cassiopeiae.    S  397.    (6  .  6  .  .  .  8  .  5  ) 
R.  A.  i"  13™  4*       Decl.  +  64°  2' 

1909.589            347°30              53"47 
-592            347-14              53-32 
•  649            347-45              53-46 

1909.48              182.62           248.11 

The  only  earlier  measure  is  : 
1880.63           i8i!68           250*06           in           BI. 

No  other  measures  of  C.    From  the  measures  of  D  we  ha 
for  the  proper  motion  of  AB  : 

Measures             0*156    in     117^8 

1909.61              347-30              53-42 

Possibly  a  little  change  in  the  angle.    The  proper  motion  is 
small  : 
Auwers               oToot)    in    134^9 
Groombridge       0.062    in     106.0 
Boss                    0.061    in    103.4 

706.    2  112.     (8.  5...  9.0) 
R.  A.  i*  I3m  40"       Decl.  +  45°  42' 

Porter                 0.172    in    138.6 
A.  G.  Hels.          0.109    in     131.2 

724.    O2(App.)i6.    (6.  5...  9.  i) 
R.  A.  i"  16™  18'       Decl.  +  16°  34' 

1907.750            I37°93              64*93 
.772             138.18              64.91 
.788            137-95              64.87 

A  and  B 
1912.507           33i°6               2i?42 
.562           331.3               21.82 
•564           330.6               21.56 

I907.77              138.02              64.90 

Comparing  this  with  the  position  by  Dembowski  in  1875,  ' 
have  for  the  proper  motion  of  the  large  star  : 
0*048    in    305  ?9 

1912.54             331.2               21.60 

One  of  these  stars  has  a  proper  motion  of  0*032  in  2gi?4 
(±  180°).    Later  measures  of  the  very  faint  star,  C,  will  show 
whether  B  has  any  movement. 

710.    A.G.I6.    (8.6...  9.7) 
R.  A.  i"  13™  54'       Decl.  +  13"  & 

1906.796                IOO?2                     30"83 
o6d                  TOO  7                      7O  7S 

732.    y  Cassiopeiae.    P  noi.    U-S-.-iS-S) 
R.  A.  i"  I7m  27'       Decl.  +  67"  30' 

A  and  C  (8.9) 
1911.622            I09?8               26*47 
.625            109.3               26.54 
.644            109.9               26.64 
.663            no.  i               26.62 

£                                                O                                     ^ 

1906.88                    190.4                      3O.79 

Probably  fixed. 

712.    A.G.  17.    (8.5...IO.O) 
R.  A.  i"  14"  29'        Decl.  +  10°  50' 

1906.796             98?3               54*56 
.964             98.7               54.61 

From  the  six  positions  on  24  n  by  2,  A  and  P  (1831-191 
we  have  an   independent  value  of  the  proper  motion   of 
Cassiopeiae: 
0*087    in    69.2 

From  meridian  observations  it  is  given  : 
Auwers          0*067    in    7o?8 
Boss               0.086    in    66.8 
Newcomb       0.076    in    66.  1 

1906.88               98.5               S4-58 

718.    2  115.    (7.3..-  7-  5) 
R.A.  i»  15-  42'       Decl.  +  57°  3i' 

AB  and  C  (12.8) 
1909.458           278?9               44:85 
•493            279.0               44.28 
.496           278.4               44.71 

734.    O2(App.)ii7.    (7.  5...  9.0) 
R.  A.  i*  17°-  37'       Decl.  +  38°  24' 

A  and  B 
1911.622            iO2?83             36T79 
.625            102.37             37.56 
.644            102.36             37.22 

1909.48             278.8               44.61 

1911.63              102.53             37.19 

94 


Burnham:   Measures  of  Proper  Motion  Stars 


A  and  C  (8.0) 

1911.622     338^60  I44''o2 

.625     338.65  144-23 

•644     339-05  144.00 


1911.63 

1911.622 
.625 
-644 


338.77 

CandD  (9.0) 
289?67 
289.73 
289.93 


144.08 


54-54 


1911.63 


289.78 


54.63 


at  least  three  of  these  stars  have  some  proper  motion,  I 
:  connected  a  faint  star  to  show  hereafter  the  distribution 
of  motion  in  the  large  stars. 

C  and  E(i2.8) 

1911.644  28?40  85*41 

.663  28.21  85.85 

•775  27-90  85.93 


1911.69 


28.17 


85.73 


737.    H  13 

R.  A.  i"  17™  52'        Decl.  +  12°  17' 

H  13  and  h  112 
1910.666  273?9  H4"2 

The  nebula  in  the  field  is  very  faint  and  diffused,  and  the 
bisection  not  very  exact.  The  double  star  was  measured  in 
1902.  The  components  are  distant  companions  to  DM  (12°) 
172. 


740.     44  Ceti.    H  1079.     (6. 9... 10.7) 
R.  A.  i"  i8m  o"       Decl.  —  8°  38' 


1907.692 
.695 
•731 

1907.71 


298.33 
298.50 

298.40 


8 1 787 
81.40 
81.30 
81.52 


It  is  safe  to  assume  that  the  io.7m  star  is  fixed,  and  all  the 
motion  in  the  other.  My  measures  (1877-1907)  give  for  the 
proper  motion  of  44  Ceti: 

o"i8o    in     ioi?3 

It  is  given  from  meridian  positions: 

Auwers  o"i48    in  125^0 

Rad.  (1890)          0.134    in  115.4 

Boss  0.172    in  112.9 


741.     9  Ceti. 

3  505-    (3 

.7.  ..13-  7) 

R.  A.  i"  i8m 

i"        Decl. 

—  8°  48' 

1910.933 

56?78 

62718 

10.971 

57-23 

63.22 

11.564 

57-30 

62.88 

".583 

57.58 

62.34 

1911.26 


57-22 


62.65 


The  four  (5  positions  (1877-1911)  give  for  the  proper  motion 
of  9  Ceti: 

o"iso    in     I97?3 

Or,  omitting  the  measure  of  1877,  which  is  on  a  single  night : 
o"i86    in     191 ?4 

This  motion  from  meridian  observations  seems  to  be  too 
large : 

Auwers         0^233    in    2o6?o 
Boss  0.227    in    200.6 

Newcomb     0.231     in    201.5 


747.     O230.     (7. 8.. .11.4) 
R.  A.  i"  18™  50'       Decl.  +  30°  55' 

A  and  B 
1907.750  238^0  4758 


239.2 


4-43 


1907.77  238.6 

A  and  C  (7.5) 
1907.750  105 ?30 

.772  105.30 

.788  105.00 


4.50 


5678! 
56.46 
56.82 


1907.77  105.20 

A  and  a  (13.6) 
1907.750 


.772 


l62?0 

159-7 
163.1 


56.70 


25-91 
25.92 
26.49 


1907.77  161.6  26.11 

No  change  in  B  and  C.    No  other  measures  of  the  small  star. 

748.     Hdso.     (8.5-..I2.I) 
R.  A.  i"  18™  53"        Decl.  +  2°  25' 


1910.570 
.586 
.666 


264.3 
264.4 


32722 
32.83 
32.38 


1910.61 


264.5 


32.48 


No  other  measures  of  this.    About  45'  distant,  nearly  n  is  h 
116;  a  little  brighter  in  the  middle,  and  much  elongated  in 

h  116  and  star  12. 8m 
1910.666  227?7  22173 


753.    2 121.    (8. 7... 9. 7) 
R.  A.  i"  19™  29'        Decl.  +  63°  51' 


1909-589 
•  592 
.649 


274.9 
275-4 
274.9 


I3"o5 
13.09 
12.77 


1909.61  275.1 

Probably  a  little  change. 


12.97 


95 


Biirnhain:   Measures  of  Proper  Motion  Stars 


758.    CD  Andromedae.    P  999.     (5.  3.  ..12.0) 
R.  A.  i*  20m  29'        Decl.  +  44°  47' 

A  and  B 
1908.711              97?7                  2?57 
.728            100.7                  2.48 
:882              99.9                  2.57 

769.    A.  G.  18.    (8.6...IO.O) 
R.A.i"  21™  55'        Decl.  +  13°  51' 

1906.796             41?!               73^90 
.906             41.3               74.16 
.964             41.4               74.15 

1906.89               41-3               74-07 
No  motion. 

778.     4BCeti.    See  14.     (5.  2.  ..12.  8) 
R.  A.  Ih23m5i'        Decl.  —  22°  15' 

1907.675            249?2                2i':p9 
10.627            249.6                21.99 

1908.77                99.4                 2.54 

A  and  C  (10.7) 
1908.652            no?35            124*93 
.673            no.  60            124.06 
.689            no.  20            124.63 

1908.67              110.38            124.84 

I  have  given  in  Part  II  of  the  General  Catalogue  the  proper 
motion  of  <o  Andromedae  from  the  measures  of  AC  to  1902: 
0^359    in     lo6?2 

Some  of  the  meridian  values  are  : 
Bonn             0^347    in     fo7?l 
Bossert          0.355    in     106.3 
Boss              0.358    in     105.6 

762.     2  123  rej.     (9-..  9) 
R.  A.  i*  20™  S3"       Decl.  +  52°  51' 

A  and  B 

I907-559            i6i°6               i6rso 
.562            162.4               16.25 
.578            161.4               16.58 

1909.15              249.4                21.99 

The  proper  motion  of  48  Celt  is  given  : 

Auwers         0^026    in     113?! 
Boss              0.056    in      87.9 

792.     2131.     (6.0...  9.  2) 
R.  A.  i"  25™  17'        Decl.  +  60°  4' 

A  and  B 

1910.818            I4i?8               13^92 
.838            142.6               13.72 
.856            143.0               13.92 

1907.57              161.8               16.44 

B  and  C 
1907-559            i86?9               38:58 
.562            187.4               38-78 
.578            187.2               38.43 

1910.84             142.5               13.85 

A  and  C  (9.6) 
1910.818            I44°s               28^08 
.838            145.1               28.15 
.856            145.0               28.39 

1907.57              187.2               38.60 

C  and  D  (10.5..  .11.2) 

1907.559             72  ?8               10^26 
.578             74.8               10.28 

1910.84             144.9               28.21 

The  object  referred  to  by  Herschel  is  h  126  (—  M  103)  ;  most 
of  the  stars  lorn  to  12  m.    The  7m  star  in  the  middle  is  red. 
No  other  measures  of  C. 

794.    2132.    (7.0.  ..10.  o) 
R.  A.  i*  25"  35'        Decl.  +  16°  20' 

A  and  a  (14.2) 
1908.750            154?!                14741 
.788            153.3               14-05 
.824            154.7               13-99 

1907.57               73-8               10.27 
The  only  other  measures  are  of  recent  date. 

765.    95  Pisciutn.    0  1164.     (6.  7...  7.0) 
R.  A.  i"  21™  26'       Decl.  +  4°  44' 

AB  and  C  (11.4) 
1910.838           22^43            I48T35 
.856           220.87            148.41 
.895            221.22            148.18 

1908.79             154.0               14.15 

A  and  C  (n.i) 
1908.652            228?90              68?75 
.655            228.95              68.77 
.673            229.13              68.56 

1910.86             221.17            148.31 

For  the  proper  motion  of  AB. 
Porter           o7i55    in    2O2?7 
Boss              0.162    in     193.2 
Auwers         0.154    in    204.0 

1908.66              228.99              68.69 

96 


Burnham:   Measures  of  Proper  Motion  Stars 


A  and  D 
1908.652             "3°03             T35"6i 
.655             113-17             135-72 
.673            H3-3S             I34-98 

Therefore  the  proper  motion  of  the  principal  star  is  : 
0*058    in    219?! 

806.     2135.     (8.0...  to.  7) 
R.  A.  i"  27""  i8s        Decl.  +  35°  34' 

A  and  B 
1907.692            259^6                  8"  12 
.711             259.5                  8.00 
•730            259.7                  7.96 

1908.66              113-18            135-44 
D  and  d  (10.1..  .10.7) 
1908.652            287^7                  5"47 
.655            288.0                  5-89 
.673            288.2                  5-39 

1908.66              288.0                 5-58 

The  only  prior  measures  of  these  stars  are  the  following: 
AC        1888.14        225?72          68':86        in        Eng. 
AD        1888.14        114-15        140-23        m        Eng. 

These  positions  unfortunately  depend  upon  a  single  observa- 
tion.   Comparing  them  with  the  recent  measures,  we  have  for 
the  proper  motion  of  A  : 
AC        R.  A.  +  0?  123        Decl.  —0^146 
AD                      0.168                      0.197 

1907.71              259.6                  8.03 

A  and  C  (10.5) 
1907.692              52?oo              53"94 
.711              52.53              53-95 
•730              53-03              53-98 

1907.71                S2-52              53-06 

Dembowski  gives  AC  : 
1867.68              52°6                56"8 

This  appears  to  be  a  single  rough  setting,  and  therefore 
change  is  improbable.    No  change  in  AB. 

811.    Howes-     (8.  5...  8.  7) 
R.  A.  ih  27'"  55"        Decl.  —  12°  29' 

1908.826              32°5                I3"32 
9.703              32-2                13-24 
9.785              32-8                13-28 

+  0.145                 —0.171 

Further  measures   of   these  stars   will   decrease  the   error 
probable  in  the  result  given  here. 
Measures      o"224    in     I39?7 
Auwers         0.248    in     157.8 
Porter           0.238    in     154.6 

A  comparison  of  the  present  position  of  the  faint  star  a  with 
the  rough  setting  of  1904  tends  to  show  that  it  is  not  moving  in 
space  with  the  other. 

795.    A.G.20.    (9.  i...  9.  3) 
R.  A.  i"  25m  43s        Decl.  +  n°4o' 

1906.964            248?9                 2*38 
7.540            247.5                  2.65 

1909.44                32.5                !3-28 

Without  change.     Identified  as  SD  (12°)  288,  the  place  of 
which  is  given  here. 

813.     looPiscium.    2136.     (6.  9...  8.0) 
R.  A.  i"  28™  29"        Decl.  +  11°  57' 

A  and  C  (12.9) 
1911.835            310^65              74"87 
.870            310.9°              75-05 

1907.25              248.2                  2.51 
The  smaller  component  is  preceding. 

798.     2i33-     (7-0...  10.  5) 
R.  A.  i"  25™  55'        Decl.  +  35°  14' 

A  and  C  (10.8)  . 
1910.971             i95°8                24%2 
11.545             196.1                24.57 
11.564            195.8                24.81 

1911.85              310-77              74-96 

A  and  D  (n.i) 
1911.777               8?4o            i  24^26 
.813                8.40            124.46 
.870                8.37             123.71 

1911.36              195-9                24.67 

A  and  D  (10.8) 
1911.545             191  °7               2g".27 
.564            191-3                29.35 
.583             190.8                29.34 

1911.82                 8.39            124.14 

A  and  B  are  relatively  fixed.    As  the  proper  motion  of  100 
Piscium  is  very  uncertain  from  meridian  observations,  I  have 
connected  two  faint  stars. 

Auwers         0^046    in    273?8 
Boss              o.on     in     188.0 

1911.56              191.3                29.32 

From  the  measures  of  the  distant  small  stars  by  2,  A,  HI  and 
P  (1833-1911)  we  have  for  the  proper  motion  of  AB  : 
AC        R.  A.  —  o''o37        Decl.  —  o"o47 
AD                      0.036                     0.043 

97 


Burnham:   Measures  of  Proper  Motion  Stars 


825.    PIOOO.    (7. 6... 8.5) 
R.  A.  i"  29™  27'        Decl.  —  30°  32' 

A  and  C  (8.5) 

1908.692  20?4S  1407/9 

10.971  20.30  140.06 


1909.83 


20.37 


140.42 


The  comparison  star  may  have  some  proper  motion.  The 
other  positions,  and  the  apparent  motion  of  A,  are  given  in  Part 
II  of  the  General  Catalogue. 


826.    0233-     (7- 2... 8.3) 
R.A.  ib  29™  31'        Decl. +  58°  i' 


1907.695 
.711 

.714 


75°7 
75.8 
75-5 


25-29 
25-14 
25-25 


1907.71  75.7 

Very  little,  if  any,  change. 


25-23 


830.    2138.    (7. 3..- 7-3) 
R.  A.  i"  29™  46'       Decl.  +  7°  2' 

A  and  C  (15.5) 

1910.627             66?3  24741 

.678             66.8  23.87 

.760             67.1  24.67 

1910.69  66.7  24.32 

Giange  in  distance  possible,  but  the  small  star  is  very  faint. 

839.    O2(App.)2o.    (7. 5... 8. 5) 
R.A.  i*  31™  3'       Decl. +  21°  57' 

A  and  B 

1910.950  3i4°oo  94717 

.971  3I4-30  94.14 


1910.96 


3I4-I5 


94.16 


From  the  four  positions  of  these  stars  (1875-1910),  one  of 
them  has  a  proper  motion  of  01*058  in  286?6  (±  180°)  ;  further 
measures  of  the  faint  star  will  show  which  one  it  is. 

A  and  a  (12.9) 
1910.971  256^7  27708 

843.    2139-    (8.8... 9.0) 
R.  A.  i'3i°144i        Decl. +  52°  21' 

A  and  B 
1908.518  223?s  9783 


•  556 

•  559 


222.1 
223.1 


9.90 
IO.O2 


1908.54 


222.9 


9.92 


A  and  C  (9.4) 

1908.518  87?45  107763 

.556  88.07  107.16 

.559 87.87  107.14 

1908.54  87.80  107.31 

The  only  other  observation  of  this  is: 

1881.46  87?97  io6:'89  3n  Bl 

The  difference  is  probably  due  to  errors  of  observation. 

845.     2140.     (8. 5... 9. 2) 
R.  A.  i"  31°  56*       Decl.  +  40°  27' 

A  and  C  (11.4) 
1909.458  319^42  191786 


•  493 
-512 


319-60 
319-63 


191.97 
191.67 


1909.49  319-55  191-83 

No  change  in  AB.    The  only  other  measure  of  C  is: 
1880.63  3I9°63  190725  in 


Bl. 


As  this  is  on  a  single  night,  the  apparent  change  in  distance 
may  not  be  real. 


854.     103  Piscium.    P5.     (7.0... 9.0) 

R.  A.  lh  32™  47"        Decl.+  i6°  i' 

AB  and  C  (11.8) 


1910.856 
-895 
-931 


185.12 
185-83 


90733 
90.74 
90.49 


1910.89  i8S-49  90.52 

For  the  proper  motion  of  A. 

Auwers         07040    in    228?3 
Boss  0.031     in     185.3 

860.    2142.    (8. 2... 8. 4) 

R.  A.  i"  33m  28'        Decl.  +  14°  39' 

A  and  B 


1907.540 

.636 
.673 

349-1 
349-  S 

I47io 
14.12 
14.04 

1907.62 

349-2 

14.09 

A 

and  C  (10.4) 

1907.540 
.636 
-673 

i8i?95 
182.22 
181.70 

102754 
102.33 
102.49 

1907.62 

181.96 

102.45 

No  change  since  Dcmbowski.    Two  faint  stars  closely  pre- 
ceding AB. 


I  have  shown  that  one  of  the  Struve  components  has  a  proper 
motion  of  07225  in  ioi°o  (±  180°).  As  they  are  of  nearly  the 
same  magnitude,  it  is  as  likely  to  be  in  one  as  the  other.  I 
have  therefore  connected  a  third  star,  a  rcmeasurcment  of 
which  after  a  few  years  will  show  at  once  which  one  of  the 
larger  stars  is  in  motion. 


Burnham:   Measures  of  Proper  Motion  Stars 


The  following  later  measures  appear  to  indicate  that  the 
roper  motion  is  in  B: 

I9II.62S                  l82?00                 I02"2I 

.644            182.30            102.18 
.663             181.51             102.55 

As  these  stars  appear  to  have  a  common  proper  motion,  I 
have  connected  a  third  star  : 

A  and  C  (10.8) 
1910.703            34°°i3              79"22 
.720            340.37              78.94 

1911.64              181.94            102.31 

861.    T  Andromedae.     (5.0...  10.2) 
R.  A.  i"  33m  30'        Decl.  +  39°  &' 

1910.684           328?63             52".85 
.703            328.32              52.55 
.720            328.83              52.85 

1910.71              340.25              79-o8 

The  motion  of  A  is  given: 
Boss              o"i35    in     io8?6 
A.  G.  Ber.    0.130    in      97.9 

871.     2i46.     (8.  3...  8.3) 
R.  A.  i"  34™  57s.       Decl.  +  9°  3o' 

1910.70              328.59              52.75 
The  proper  motion,  if  any,  is  very  small,    There  is  a  misprint 

1909.782             126.4                24.02 
.802             126.5                23-90 
.838            126.4                24.02 

i  the  angle  in  G.  C.  Part  II. 

Boss              o'teg    in     151?! 
Auwers         0.019    in     142.3 
Newcomb     0.040    in     136.8 

865.    H2o66.    (io.8...ii.o) 
R.A.  Ih34m6'        Decl.  +  55°  11' 
1910.586              67?5                19*42 

1909.81               126.4                23.98 
No  change. 

872.    44  Cassiopeiae.    0  1103.     (6.  2.  ..12.  5) 
R.  A.  i"  35™  13'       Decl.  +  59°  57' 

A  and  C  (10.0) 
1912.545            309°5o             66".03 
.562           310.25             65.90 
.564            309-87             66.04 

1912  56             309  87             65.99 

1910.60                67.4                19.50 

No  other  measures,    h  146  is  about  15'  distant  nf  H  2066; 
le  principal  star  of  this  cluster  is  O2  35. 

AandD  (9.6) 

1912.545            228?67             I40"34 
.562            228.92             140.11 
.564            228.90            140.08 

868.     HioSS.     (7.0...  9.5) 
R.  A.  i*  34™  20'       Decl.  +  58°  i' 

1911.622             i67?7                I9"s8 
.644             167.9                19-59 
.663            168.8               19.71 

1912.56              228.83             140.15 

No  other  measures  of  these  stars.    The  proper  motion  of  44 
Cassiopeiae  is  given  in  the  catalogues  : 
Auwers                0^063    in     103^0 
Groombridge       0.041     in     152.2 
Boss                     0.027    in     118.5 

The  7.om  star,  Piazzi  I.  139  (—DM  (59°)  306),  42'  pre- 

1911.64            168.1               19-63 

Further   measures   are   needed    for   the   correction   of   the 
)roper  motion  of  A  (Bradley  222). 

Auwers         o"o8o    in     104^5 
Bossert         0.090    in     102.9 

ceding  44  Cassiopeiae,  has  two  small  companions  : 

A  and  B  (13.8) 
1912.545            ioo°8               I2?85 
.562            101.3               12.80 
.564            102.0               12.64 

870.     2145.     (6.0...  10.6) 
R.A.  ih  34™  36'        Decl.  +  25°  8' 

1912.56             101.4               12.66 

A  and  C  (i3-5) 
1912.545             I2?6               26"s6 
.562             12.6              26.60 
.564              11.9                26.81 

AandB 
1910.684              33°3                io"78 
-703              32.3                10-53 
.720              32.5                10.78 

1912.56              12.4              26.66 

No  other  measures.    The  proper  motion  of  the  large  star  is 
doubtful  : 
Groombridge       0*026    in    2i8°6 

1910.70                32.7                10.70 

Boss                     0.008    in     156.9 

99 


Burnham:  Measures  of  Proper  Motion  Stars 


875.    H2072.    (8.0...  9-o) 
R.  A.  lh  35m  45"        Decl.  —  18°  37' 

1911.755            283  ?9                 3*02 
•  775           283.8                 3.22 
.813           286.0                3.13 

925.    2156.    (8.  3...  8.  8) 
R.  A.  i"  39'"  So"        Decl.  +  59°  46' 

1907.562              97?8                  5"54 
-581              98-1                  5-70 
•  638              97-6                  6.09 

1911.78             284.6                3.12 
Probably  unchanged. 

878.     H2069.     (9.  2...  9.  3) 
R.A.  i"  35-49'       Decl.  +  52°  41' 

The  Astrographic  Catalogue  gives  a  smaller  distance: 
1903.76           242?7            18*85            Catania. 

882.     107  Piscium.    H207I.     (5.  5...  12.  2) 
R.A.  i"  35™  58'    Decl.  +  19°  41' 

A  and  B 
1910.703            249?5                19*09 
.742            247.5                19.00 
.760            248.1                18.92 

1907.59                97.8                 5.78 
Change  uncertain. 

934.     ZiSQrej.     (8.9...n.o) 
R.  A.  i"  40'"  54'        Decl.  +  16°  46' 

1906.772            293  ?9               28*80 
.813            294.6               28.40 
.906           294.2               28.27 

1906.83             294.2               28.49 
No  other  measures. 

941.     2i62.     (7.0...  7.  5) 

AandD  (9.7) 
1908.518              95°88            I35"63 
•559              95-77             135-23 
•573              95-73             135-62 

1910.73              248.4                19.00 

A  and  C  (10.5) 
1910.684            350?is              95*84 
•703            350.02              95.89 
•  742           350.20             95.42 

1908.55                95-79            135-49 

D  is  DM  (47°)509-    The  only  other  measure  is: 
1881.46           95?40           133*96           311            Bl 

As  the  separate  distances  differ  by  more  than  i",  it  would  be 
unsafe  to  infer  any  real  change. 

944.     H  2085 
R.  A.  ih4im56f       Decl.  +  52°  12' 

There  is  an  error  in  printing  the  angle  of  the  small  pair  nf 
H  2085  as  given  in  G.  C.  Part  II  ;  for  274?o  read  264?o. 

951.    2163.    (6.  2...  9.  7) 
R.  A.  ih42m3s'        Decl.  +  64°  16' 

A  and  C  (9.7) 
1908.518           254^28            114*65 
•556           254.54            115.01 
•559           254.60            114.70 

1910.71             350.12             95.72 

The  proper  motion  of  107  Piscium  from  the  measures  of  AB 
is: 
0*745    in    201  '.4 

This  of  course  should  be  identical,  as  practically  it  is,  with 
the  value  found  from  AC,  and  given  in  G.  C.  Part  II. 

Measures  of  AC    0*739    in    2os?o 
Porter                      0.733    in    203.9 
Boss                          0.735    in    203.8 

884.    O235-    (6.8...IO.O) 
R.  A.  i*  36™  o"       Decl.  +  55°  16' 

1909.589            iO3?4               11*28 
.647            101.9               11.13 
.666            103.5               11.31 

1009.63             102.9               11.24 

The  A.  G.  Harvard  proper  motion  of  0*065  'n  '7o°9  of  the 
large  star  cannot  be  correct.    Rejecting  measures  made  on  less 
than  3n,  the  five  positions  by  O2,  A,  Hu  and  0  (1847-1909) 
give  for  the  motion  of  A  : 

1908.54              254.47             "4-79 

The  only  prior  position  is  : 
1879.40           254?25            114*79           2n            Bl 
No  proper  motion  found  in  the  catalogues  for  the  large  star 

100 


Burnham:   Measures  of  Proper  Motion  Stars 


953.    2 171.    (8. 2... 8.6) 

R.  A.  i"  42'"  40"        Decl.  —  2°  i' 

A  and  B 
i6i?8 
160.8 
160.9 


1910.931 
-933 
•  971 


30.59 
30.63 
30.87 


1910.94 


161.2 


30.70 


One  of  these  stars,  probably  the  larger,  has  a  small  proper 
motion.  The  measures  of  AB  (1829-1910)  give  for  the  ap- 
parent motion  of  A : 

o'.'o46    in    2?4 

There  is  no  sensible  change  in  BC  (f$5ii). 


960.     Zifyrej.     (8. 7... 9. 9) 
R.A.i"  43"' 12s        Decl.  +  65°  si' 


ipii-545 
•564 
.583 


9.4 
8.9 


iS"8o 
15.64 
15-81 


1911.56 


9.1 


15-75 


The  change  in  position-angle  seems  to  confirm  the  proper 
motion  given  to  A  in  G.  C.  Part  II.  The  only  other  measures 
are  my  own  in  1903. 

Schroeter    o'/325    in     io6?5 


974.     2i75-     (8. 2... 8. 5) 
R.  A.  i*  44"'  25'        Decl.  +  20°  31' 

A  and  B 
1909.818  348?2  I7'.'57 


.821  348.7 

.838  348.4 


17-51 
17-44 


1909.83              348.4  17.51 

B  and  C  (12.5) 

1909.802              37?3o  I7o"9i 

•838              37-55  I7I-I3 


1909.82 


37-42 


171.02 


Third  star  measured  to  determine  which  of  the  nearly  equal 
components  has  the  proper  motion.    The  apparent  motion  of 
A  from  the  measures  of  AB  (1830-1909)  is  : 
o".io8>    in     ig6?o 


990.     0259.     (8.  7.  ..it.  2) 
R.  A.  i"  46'"  20"        Decl.  —  10°  19' 


1909.649 
.703 
-780 


236^8 
236.1 
237.3 


4.58 
4-85 


1909.71 


236.7 


4.69 


No  material  change. 

Following  72?4  and  91^4  n  is  h   160  (==  h  2442)  ;  faint  and 
diffused;  elongated  in  50°. 


997.     2i8ir<?/.     (8. 5... 9.1) 
R.A.  i"47m32'        Decl. +  37°  3»' 

A  and  B 
1907.542  I25?6  26^98 


.562 
.581 


124.7 
124.9 


26.87 
27.10 


1907.56  125.1  26.98 

B  and  C  (ii.o) 

1907.542      8i?l  26"  16 

•562      79.3  26.70 

.581      80.7  26.08 

1907.56      80.4      26.31 

The  angles  by  Miller  are  180°  in  error.    There  is  a  12  m  star 
from  A,  279°  :  25". 

1008.     56  Andromedae.    24,  App.  I.     (6.0... 6.0) 

R.  A.  i"  49m  i '        Decl.  +  36°  40' 

A  and  a  (11.4) 


1909-496 

-512 
-515 


77°8 
78.2 
79-2 


:8"oi 
18.27 
18.41 


1909.51  78.4  18.23 

B  and  b  (9.2) 

1909.496  257?40  203*64 

.512  257.73  203-77 

.515  257.57  204.09 

1909.51  257.57  203.83 

The  9.2m  star  measured  from  B  is   DM  (36°)  349.     The 
measures  of  this  tend  to  show  that  B  has  no  proper  motion,,  and 
that  the  change  in  AB  is  wholly  due  to  the  proper'^poifsjiJoJ,' 
the  principal  star.    The  observations  should  be  continued. 

1880.30  257?55  2O3l'73  2B '*•>'' -T'Bt, ,;;""' 

For  the  proper  motion  of  56  Andromedae  we  have : 
Auwers  o".i(a    in    83?3 

Porter  0.157    in    83.0 

Boss  0.181     in    86.5 

The  proper  motion  of  B  is  given: 

Auwers         0^057    in  275^0 

Porter  0.025    "n  276.8 

Boss  0.005     in  309.8 

1014.     A.G.26.     (8. 8...  ii.o) 

R.  A.  i"  49m  37'        Decl.  +  14°  31' 

1906.964  3io?o  3i"i6 

7.022  310.5  31.27 

7.540  309.8  30.95 


1907.18 

310.1 

3I.J3 

1911-835 

3o8?6 

31^36 

.870 

309-4 

3L50 

.928 

309-7 

31.28 

1911.88          309.2  31.38 

The  distance  may  be  increasing  if  the  measure  of  1895  is 
correct. 


Burnham:   Measures  of  Proper  Motion  Stars 


1015.    (9.2...  9.5) 
R.  A.  i*  49-  41'       Decl.+  i°is' 

This  is  the  new  pair  referred  to  in  the  note  to  2  186.    As  the 
measures  show  no  sensible  motion,  it  can  not  be  the  pair  meas- 
ured by  Hall,  unless  there  is  a  large  error  in  his  position-angle. 

1906.964              3i?7                  o?77 

1025.    8404.    (7.  6...  8.  6) 
R.  A.  ihsom49i       Decl.  +  40°  48' 

A  and  B 
1912.262              77°ss              24*83 
.564              76.23              24.22 
•583              76.55              24.52 

7.67S              34-9                 0.74 
7-750              30-5                  0.91 

1912.57                76.78              24.52 

1907.46                32.4                 0.81 
The  following  is  of  2  186  : 

and  (_  (12.9) 
1912.564              09?7                81^98 
.622             100.8                81.21 

1907-675             32?2                 oT63 

1018.    A.G.27.     (9.  3...  10.7) 
R.  A.  i"  50"  31'       Decl.  +  14°  30' 

1906.964           a63?o               17^62 
7.022            262.8               17.52 
7.540           263.2               17.85 

1912.59              100.2                81.59 

The  measures  of  AB  (1879-1912)  give  the  apparent  motion 
of  the  larger  star  : 
o"o52    in    2o8?s 

I  have  connected  a  faint  star  to  show  whether  or  not  there 
is  any  change  in  B.    No  proper  motion  found  of  either  in  the 
star  catalogues. 

1036.    48  Cassiopeiae.    (5  513.     (50      75) 

1907.18             263.0               17.66 

1911.813            264.7               17-54 
.835            264.2               17.38 
.870           264.2               17.51 

R.  A.  i"  52™  7'       Decl.  +  70°  19' 

A  and  C  (13.6) 
iQii-775             52°o               23^74 

1911.84             264.4               17-48 

•  777              52-4                23.36 
•813              52-3                23.66 

Change  is  still  uncertain. 

•       > 

•::•::  : 

1911.78                52.2                23.59 

As  the  first  measure  of  the  faint  star  is  on  a  single  night, 
other  observations  of  C  are  required  for  a  good  value  of  the 

::•':•./ 

::    :  .*.  '        1020.   H  1098.    (io...i2) 

•  -        •****• 

R.A.i'  50™  33'       Decl.  +  59°  35' 

1909.438           343°6               i6?72 
•515            343-1                16.41 
•570            344-9                I7-03 

proper  motion  of  AB.    This  is  given  from  the  meridian  places  : 
Auwers         0^069    in    2&4?2 
Boss             0.061    in    275.6 

1037.     2192.     (8.  2...  9.0) 

1909-51              343-9                16.72 

H  1098  is  one  of  the  principal  stars  of  A  170.    No  other 
neasures. 

R.  A.  i"  52™  23'       Decl.  +  57°  57' 

A  and  C  (9.0) 
1908.518            145^82             76"o2 
•  556            146.12             76.10 
•559            145-94             75.85 

1023.    H  noo.    (6.  3...  10.  6) 
R.  A.  i"  50"  47-       Decl.  +  64"  2' 

1910.684            3io?40              39?33 
•703            310.60             38.78 
•739           310.47             39-34 

1908.54             145.96             75.99 

C  is  DM  (57°)  448.    The  only  measure  is  : 
1881.46            I45?47           77715           3n            Bl 

There  is  an  apparent  change  in  the  distance. 

1910.71             310.49             39-15 

The  time  interval  is  too  short  to  show  whether  or  not  there 
s  common  proper  motion. 
The  motion  of  A  is  given  : 
Boss             0*049    in    ioo?7 

1044.    47  Cassiopeiae.    Sh  22.     (5.  5...  9.  5) 
R.  A.  i"  53™  6'       Decl.  +  76°  42' 

1912.408            io8?25             95?42 
•  427            198.33             95-32 
.4.30            108.67             95.i6 

Batterman    0.031    in    117.0 

1012.42                 108.42                 QS.30 

102 


Burnham:   Measures  of  Proper  Motion  Stars 


From  the  p  measures  (1881-1912)  the  proper  motion  of  47 

Cassiopciae  is: 

o"i28    in     ios?9 

From  meridian  observations  we  have: 

Auwers         o"i25    in     114^6 
Boss  0.143    in     112. 2 


1048.     Si&rej.     (8.5... 8. 7) 
R.  A.  i"  S3"1  52'       Decl.  +  6°  7' 

My  early  measures  are  omitted  in  the  General  Catalogue. 
rhere  is  no  change  in  25  years. 
1879.88 


117.2 


45-47 


2n 


1050.     2i97.     (7-3-.. 8. 3) 
R-  A.  i"  S3™  59'        Decl.  +  34°  43' 

A  and  C  (13.2) 

1909.802  68^70  5«"92 

.818  68.40  50.55 

.838  67-95  50-49 


1909.82 


68.35 


50.65 


Measured  for  an  independent  determination  of  the  proper 
motion  of  A.    This  from  the  measures  of  AB  is  o"io8  in  53^0. 


1051.    49  Cassia feiae.    P  785.     (5-5---!3-o) 

R.  A.  i"  S4m  4s        Decl.  +  75°  32' 

A  and  B 


1911.775 

243.4 

5-5° 

•  777 

243-7 

5-34 

.835 

246.2 

5-32 

1911.79          244.4 

A  and  C  (14.2) 
1911.775  I28?s 


-777 
.813 


128.8 
127.9 


5-41 

28'.'00 

28.68 
27-45 


128.4 


28.04 


1911.79 

There  is  no  sensible  change  in  AB  since  1881.  The  proper 
motion  of  49  Cassiopeiae  is  very  uncertain  in  direction  and 
amount  from  the  catalogues;  I  have,  therefore,  measured  an 
exceedingly  faint  third  star. 

Auwers         o"o4i     in    242?2 

Boss  0.018    in    205.0 


1074.     10  Arietis.  2  208.     (6.2. .  .8.4) 

R.  A.  i»  56™  50'  Decl.  +  25°  21' 

AB  and  C  (13.5) 
1912.562 


No  other  measures  of  the  faint  star.    The  proper  motion  of 
the  binary  system  is  given : 

Auwers  o"i23    in    83?9 

Bossert  0.163    in    9O.o 

Boss  0.139    in    83.4 

1083.    61  Ceti.    HV.  102.     (6.0... 9.0) 
R.  A.  i"  57"1  39'        Decl.  —  o°  55' 

A  and  B 
1908.652  193^50  42"68 


.671 


193-57 
193.58 


42.96 
43.16 


1908.67 


193-55 


42-93 


A  and  C  (11.9) 

1908.652  325°75  83^27 

.671  325-88  82.71 

.689  325-68  83.58 

1908.67  325-77  83.19 

The  measures  of  C  should  be  continued.   The  motion  of  A  is ; 
Boss  o:'o88    in     i:6?i 

Auwers         0.081     in     135.5 
Bossert         0.144    in     123.7 

1094.     S405-     (6.0... 6. 2) 
R.  A.  i"  59m  14"        Decl.  +  79°  7' 

A  and  B 
1912.545  274^60  55"84 


.562 
.564 


275-08 
274.83 


55-99 
55-71 


1912.55      274.84      55.85 
B  and  C  (i3-5) 


1912.562 

.564 


224.70 


50-94 


1912.56 


224.62 


51.05 


.622 
.638 


I43°55 
143.13 
144-30 


98.44 
98.77 


1912.61 


143.66 


98.94 


The  large  stars  are  Groombridge  445  and  443.  As  there  is  no 
relative  change,  the  proper  motions  must  be  the  same.  From 
the  Groombridge  catalogue  we  have : 

A        o"o4O    in    4?2 

B        0.057    in     1.9 

The  meridian  positions  show  no  relative  change : 

1810  271^8  55"3  Groombridge 

1842  276.2  56.2  O.  Arg.  N. 


1103.     A.G.3I-     (9-5-.- 12. 8) 
R.  A.  2"  om  25'        Decl.  +  14°  5' 

1908.785 
.788 
.824 


I47°2 
146.1 
146.9 


31.59 
32.37 


1908.80  146.7  32.29 

Disagrees  with  former  positions  in  angle  and  distance. 


103 


Burnham:   Measures  of  Proper  Motion  Stars 


1110.    H2ii4 
R.  A.2"imsi'       Decl.  —  26°  i' 

No  description  by  Herschel  as  a  double  star,  but  said  to  be 
involved  in  a  "nebulous  atmosphere,"  referring  to  h  196 
(=^2460).  This  has  a  central  point  which  may  be  a  star,  or 
only  a  condensation  of  the  nebula.  It  is  probable  that  this  and 
a  near  star  make  H  2114. 

Star  (11.5)  and  h  196  (12.7) 
1910.678  286?o  14^30 


1111.    Espin  48.     (7. 5... it. 8) 
R.  A.  2"  2"  ii-        Decl.  +  42°  17' 


1907.542 
.562 
•  578 


189.9 
190.4 


9788 
9-95 

10.00 


1907.56  190-3  9-94 

The  only  other  measure  is  in  G.  C.  Part  I. 


1116.     14  Arietis.    HVI.69-  (5. 2. ..8. 5) 

R.A.2"2m35'        Decl. +  25°  22' 

A  and  B 

1911.564      36?so  93'-4i 

•583      36.43  93-09 

.625      36.28  93.18 

-644      36.38  93.18 


1911.60 


36.40 


A  and  C  (7.7) 

1911.564  278?83 

•583  278.23 

•625  278.35 

.644  278.40 


93-21 


105788 
106.15 
106.14 
105-55 


1911.60 


278.47 


106.06 


There  is  no  change  in  either  star,  and  the  proper  motion  of 
B  given  in  G.  C.  Part  II  is  obviously  wrong.  For  the  large 
star  we  have: 


Auwers         07072    in     119^2 
Boss  0.087    in     115.2 


1119.     H2II3.     (9. 5. ..12. 5) 
R.A.2-2m55'       Decl. +  70°  43' 


1907.731 
•  750 


199°  I 
198.1 


18762 
18.62 


1907.74 
No  other  measures. 


198.6 


18.62 


1121.     H  noo,     (9- 5-.. 9. 7) 
R.  A.  a"  3'"  6"        Decl.  +  38°  37' 

173-5  267o8 

173-4  26.12 


1909.725 
•  742 


1909-73             173-4  26.10 

H  1109  and  h  197 

1909.706            283?!  177776 

.722            283.6  178.82 


1909-71  283.3 

Bisection  of  h  197  not  very  exact. 


178.29 


1124.    H2ii6.    (9.1. ..12. 4) 
R.  A.  2"  3m  33'        Decl.  —  10°  45' 

A  and  B 
1909.802  i6o?2  28719 


.838 


i6o?2 

158.2 


28.50 


1909.82          159.2  28.34 

H  2116  (A)  and  h  199 
1909.703     338?  o      186798 


.722 


337-2 


185.92 


1909-71      337-6      186.45 

H  2116  and  h  200 
1909.703     354°6      163744 


.722 


354-2 


163.64 


1909-71      354-4      163-54 

H  2116  and  h  201 
1009.703      56?2      227752 


.722 


56.4 


226.96 


1909.71  56.3  227.24 

H  2116  and  h  202 
1909.703  92  ?4  253710 


92.7 


253-43 


1909.71  92.5  253.26 

h  200  and  h  199 

1909.703  278?o  56^9 

279-6  56-1 


1909.71 


278.8 


56-5 


Small,  round  and  very  much  alike. 

The  only  other  measures  of  AB  are  recent. 


1131.    02(APP.)24.     (6.7... 8.0) 
R.  A.  2"  4™  31'       Decl.  +  56°  39' 

A  and  B 
1907.675  33i°78  63755 


.692 
.695 


332-00 
331.63 


63.89 
63-65 


1907-69 


331-80 


63-70 


104 


Burnham:   Measures  of  Proper  Motion  Stars 


A  and  C  (10.6) 
1907.692            2is°9              102*41 
.695            215.9              102.68 

A  and  C(ii.8) 
1908.824             6i?29            172*92 
.843             61.09            172.78 
.862             61.00            172.36 

1907.69              215.9              102.54 

B  and  C 
1907.692             I92?o              142*62 
.695             192.1              142-47 

1908.84               61.13            172.69 

The  large  common  proper  motion  of  the  bright  stars  is  well 
known.    For  future  use  I  have  connected  the  nearest  outside 
star. 
Auwers           0*358    in    o8?2 
Porter             0.346    in    99.6 
Boss                0.374    in    °8.3 

Hd  56  (No.  1142)  should  be  in  the  field.    There  must  be  a 
large  error  in  the  Harvard  place.    I  could  not  find  it  any  where 
in  the  vicinity. 

1163.     02(App.)2S.     (6.  i...  7.  i) 
R.  A.  2"  8m  29'        Decl.  +  56°  30' 

1907.657            204?43             102*93 
.692            204.50            102.62 
.695            204.36            102.68 

1907.69              192.0              142.54 

The  relative  motion  of  A  and  B  is  known  with  great  accuracy. 
From  the  measures  of  AB  the  apparent  motion  of  A  is  : 
0*251     in     Il8?5 

The  third  star,  measured  from  each,  will  show  hereafter  how 
this  motion  is  to  be  divided  for  the  bright  stars. 
The  proper  motion  of  A  from  meridian  positions  is  given  : 

Stumpe                o"337    in     I26?o 
A.   G.    Hels.        0.347    in     124.3 
Porter                   0.319    in     126.3 

1136.     2225.     (8.0...  ii.  2) 

R.A.2b5m5'        Decl.  +  53°  39' 
A  and  C  (10.4) 
1908.597            i6i?25             150*45 
.613            161.00            150.32 
.633            161.16            150.26 

1907.68             204.43            102.74 

The  proper  motion,  if  any,  is  very  small,  and  probably  com- 
mon to  both  stars. 

Greenwich           0*030    in    126^9 
Boss                     0.015    in      90.0 

1164.    2234-     (7-8...  8.  7) 
R.A.2"8m34s        Decl.  +  60°  48' 

AB  and  C  (10.9) 
1910.608            239?  90              82*59 
.627            239.78              82.17 
.666            239.95              82.69 

1908.61              161.14            150.34 

An  earlier  position  is  : 
1881.09           i6i?oo           149*29           3n           Bl 

The  proper  motion  of  A  is  given  : 
A.  G.  Harv.      0*034    in    270° 

This  is  confirmed,  except  as  to  direction,  by  the  measures 
of  AC. 

1148.     223o.     (7.  5...  8-7) 
R.  A.  2"  6ra  28'        Decl.  +  57"  56' 

1907.657            257?9                23*97 
.675            257.6                24.02 
.692            257.7                23.90 

1910.63              239.88              82.48 

For  proper  motion  of  AB  ;  conditions  not  good  enough  for 
close  pair. 

1174.     8  Trianguli.     (5.  1.  ..13.  8) 
R.  A.  2"  9m  36'        Decl.  +  33°  41' 

1907.675            336?70              65*45 
.692            337-40              65.54 
•  772            336.77              65.22 

1907.67              257.7                23.96 
Relatively  fixed. 

1149.    66  Ceti.    2231.     (6.0.  ..7.  8) 
R.  A.  2"  6m  39'        Decl.  —  2°  57' 

A  and  B 
1908.709            232^0                15*82 
.711            231.1                16.01 
.766            231.4                15.88 

1907.71              336.96              65.40 

The  only  prior  measures  are  my  own,  given  in  the  General 
Catalogue.    The  interval  is  too  short  at  this  time  to  make  any 
correction  to  the  large  proper  motion  of  8  Trianguli. 
Auwers         1*144    in     ioi?2 
Boss              I-I79    'n     102.0 

05 

.     1908.73              231.5                15.90 

1 

Burnham:   Measures  of  Proper  Motion  Stars 


1175.     xPcrsci.    0  1170.     (6.3...) 
R.  A.  2"  9™  39'       Decl.  +  56°  57' 

A  and  BC  (n.o) 
1910.971             353?77              69?9i 
Ji-529            353-83              69.93 
II  -545            354-09              69.87 

1198.     loTrianguli.    H  1115.     (6.0...  12) 
R.A.2"nm59'       Decl.  +  28"  5' 

1908.766            204?9                57^27 
.788            204.8                57.51 
.804            205.2                57.43 

1908.79              205.0                57.40 

The  large  star  has  no  sensible  or  certain  proper  motion  : 
Auwers         0*015    in    344^2 
Boss              0.012    in      99.5 

The  measures  of  the  small  star  should  be  continued. 

1206.     11327.     (8.  7...  10.2) 
R.  A.  2"  13™  10*       Decl.  —  7"  24' 

1909.802            3is?34             23fo6 
-838           315.47             23.55 

1911-35              353-90              69.90 

From  the  four  sets  of  measures  on   ion   (1879-1911)   the 
sroper  motion  of  the  large  star  is  : 
0^052    in    281  ?3 

Most  of  the  meridian  values  arc  discordant  and  too  small. 
Auwers               oTo68    in    261  ?5 
Groombridgc       o.on     in    206.8 
Boss                     0.007    'n    277.8 
Van  Maanan       0.022    in    285.9 

A  and  D  (8.8) 
1910.971            I36?33            123^09 
11.529            136.13            123.85 
n.545             136.17            123-21 

1909.82             315-40             23.75 

H  327  (A)  and  h  215 
1909.802            355?4              202?9 
•838            355-1              202.4 

1911.35              136.21             123.05 

1181.     2  242  re;.     (6.7...io.o) 
R.  A.  2"  iom  20"       Decl.  —  10°  23' 

1907.692            236?3               55^67 
.788           236.1               55.46 
.791            234.9               55-43 

1909.82             355.2             202.6 

For  the  last  we  have  : 
1899.92           354?9           203^2           Kobold. 

In  the  General  Catalogue  for  the  Dreyer  number  823  read  883. 

1209.    oCeti.    HVI.  i.    (Var...i3.o) 
R.  A.  2"  I3m  17'        Decl.  —  3°  31' 

A  and  C  (9.3) 
1909.627             79?28            H7"22 
.630             79.40            116.71 
.649             79.05            117.47 
.666             79.20            117.18 

1907.76             235-8               55-52 

The  five  sets  of  measures  (1877-1907)  give  for  the  corrected 
proper  motion  of  A  : 

Measures      0^265    in    105^8 
Porter           0.300    in     102.7 

1193.    O2(App.)26.     (6.  i...  6.  5) 
R.  A.  2"  1  1"  2-       Decl.  +  59°  28' 

A  and  B 
1910.971            I99?9O             63^26 
11.529            199.73             63.47 
"•545            199-73             63  23 

1909.64               79-23            117-14 

From  the  five  positions  cited,  by  O2,  Eng.  and  P  on  i6n 
(1864-1909)  we  have  for  the  corrected  proper  motion  of  o  Celt: 
o"222    in     I79?6 

The  later  measures  will  not  sensibly  change  this  result. 

AandC 
1911.622              79?03             H7"20 
.625              78.95             117-53 
.644              78.88            117.02 
.663             79-11            117-59 

I9II-35              199-79             63.32 
A  and  C  (10.2) 
1910.971             133?  10              71^99 
11.529             132.85              72.33 
"•545            132.97             72.35 

1911.35              132.97             72.22 

B  and  C 
1910.971             8i!83             74*75 
11.529             81.70             75.16 
11.545             81.98             75.64 

1911.64               78.99            "7-33 

A  and  B 
1911.644             85^23             73"o8 

1911.35               81.84             75-i8 

As  these  large  stars  are  relatively  fixed,  and  have  a  common 
proper  motion,  if  any  at  all,  I  have  connected  a  third  small 
star.  The  bright  stars  arc  not  in  Boss'  General  Catalogue. 


.663 
720 


84.83 
84.95 


73-33 
72-74 


1911.67 


85.00 


73-05 


106 


Burnliain:   Measures  of  Proper  Motion  Stars 


B  and  C 
1911.720              69?02              45'!  53 
•  775              69.17              45-62 
•  777              68.77              45-22 

1260.    £517.    (7-5-..  12.5) 
R.  A.  2"  18'"  54s        Deed.  —  4°  26' 

A  and  C  (11.5) 
1912.675            289?38             55"83 
.695            289.57              56.35 
.717            290.60              56.18 

1911.76               68.99              45-46 

Some  of  the  proper  motions  from  star  catalogue  positions 
are: 
Auwers         o"23i     in     185^9 
Boss               0.237     in     180.4 
Newcomb     0.229    in     179.2 

1217.    9  Persei.    P  875-     (5-5---I2-3) 
R.  A.  2"  14™  o"        Decl.  +  55°  18' 

1911.813            162^8                ii"23 
.931             161.5                II-4I 
.942            161.4                11.51 

1912.69              289.85              56.12 

It  is  evident  from  the  measures  of  both  companions  that  the 
principal  star  (Lalande  4486)  has  no  material  proper  motion. 

1262.     t  Cassiopeiae.    2  262 
R.  A.  2"  19™  io'       Decl.  +  66°  52' 

C  and  D 
1908.520             56?ox>           2o6"i2 
•537             56.88           206.20 
.556             57-00           205.83 

1911.89              161.9                "-38 

If  the  principal  star  has  any  proper  motion,  it  is  very  un- 
certain.   There  is  no  material  change  in  the  place  of  the  faint 
companion. 
Auwers                0^023    in    242?! 
Boss                     0.005    in      90.0 
Groombridge       0.013    in    212.1 

1224.     2254.     (8.S-..IO.O) 
R.  A.  2"  14-°  48'        Decl.  +  23°  5' 

I9I2.6I9                 35I°I                       I2"l2 
.638                 352.9                      12.10 
-678                 352.2                       12.  08 

1908.54               56.93           206.05 

For  comparison  we  have  : 
1880.42           s6?7o           205^66           2n           Bl 

The  proper  motion  of  the  large  star,  if  any,  is  very  un- 
certain from  meridian  positions: 
Auwers         o''o28    in    27o?o 
Boss              0.014    in    345.9 
Newcomb     o.oio    in    350.5 

1269.    O2(App.)27.    (6.  7...  7.  7) 
R.  A.  2"  20™  19'        Decl.  +  10°  2' 

A  and  B 
1910.950              3i?oo              73:42 

10.971              31-97              73-19 
11.088              31.83              73.76 

1912.64                   352.1                       12.10 

The  measures  of  the  small  star  give  the  proper  motion  of  A 
with  the  greatest  accuracy,  as  the  time  base  is  more  than  eighty 
years.    The  four  positions  by  2,  A  and  f),  on  n  n  (1831-1912) 
give  for  this  movement: 
0*051    in    27o?6 

1239.    A.G.38.    (8.7...  8.  9) 
R.  A.  2"  i6m  45"        Decl.  +  14°  52' 

A  and  B 
1908.709            26o°s8              34'-44 
.728            260.73              34-53 
.766            260.90              34.48 

1911.00                31.90              73.46 

A  and  a  (11.4) 
1910.971             I54°85              62"i2 
ii.  088            154.65              62.22 

1911.03              154-75              62.17 
No  certain  change  in  AB  since  1875. 

1280.    2270.    (7.  2...  9.0) 
R.  A.2h22m2i'       Decl.  +  55°  i' 

A  and  C  (10.6) 
1910.739            337?9                36"i8 
.742            338.2                36-46 
•  760            337-9                36.27 

1908.73              260.74              34.48 

A  and  C  (11.5) 
1908.709            i8o?i2            I26:'i6 
.766            180.63             126.10 

1910.75              338.0                36.30 

Since  the  proper  motion,  if  any,  is  common  to  both  stars,  only 
measures  of  the  third  star  are  needed. 

A.  G.  Harv.     0^138    in     127^6 

1908.74              180.37             126.13 

The  larger  components  are  supposed  to  have  some  proper 
motion.    So  far  the  measures  of  B  show  no  change.    No  other 
measures  of  the  distant  star. 

107 


Burnham:   Measures  of  Proper  Motion  Stars 


1289.    227i.    (6.5...H.O) 
R.  A.  2*  23"  38'       Decl.  +  24°  42' 

A  and  C  (12.7) 
1911.813              34°40            112^42 
•835              34-60            112.70 
.870              34.83             111.64 

1317.    2277.    (7.7--.II-0) 
R.  A.  2"  27"'  57s        Decl.  +  59°  22' 

A  and  C  (10.0) 
1908.537              22?45             i6i'.'oo 
.556              22.20            161.66 
.559              22.14            161.74 

1911.84                34.61             112.25 

For  the  proper  motion  of  AB. 
Boss                     0*109    in     139^5 
A.  G.  Berlin        0.106    in     140.1 
Kustner               0.097    'n     146.7 

1291.     P304-     (7-5-..  II-  5) 
R.  A.  2"  24"  5-       Decl.  +  36°  56' 

1908.520           283^0               20*26 
.613            282.7               19.94 
.636           283.4               19-90 

1908.55                22.26            161.77 
No  evidence  of  change. 
1881.48           22?43            i6i"i9           3n            Bl 

1329.     O2(App.)28.     (6.  i...  7.  i) 
R.  A.2h29m37'        Decl.  +  62°  4' 

1910.684            I47?oo              68710 
.720            147.70              67.73 
.739            147.40              67.73 

1908.61              282.9               19.96 

Distance  increasing  from  proper  motion  of  the  large  star 
of  about  o"o8  in  102°. 

1294.    Ku  10.    (9.  4...  9.  8) 
R.  A.  2"  24™  14'        Decl.  +  32°  23' 

1908.613            355°9                 3*30 
.636            358.5                  3-42 
•692            355-0                3.38 

No  relative  motion  since  1875. 

1341.     2282.     (8.  3...  8.  3) 
R.  A.  2"  31°  8'       Decl.  +  65°  8' 

1907.791            295?  i                 7*01 
.807            293.7                 7-o6 
.810           295.1                 6.90 

1908.65             356.5                 3-37 

1299.    0242.     (7.0...  7.  5) 
R.  A.  2"  25™  6'        Decl.  +  51-47' 

AB  and  C  (10.4) 
1909.627            348?oz             91*21 
.649           347-73             91-48 
.666           347.85             91.08 

1907.80             294.6                6.99 
Without  change. 

1350.     A.G.43-     (9-4--.  9-4) 
R.  A.  2"  32™  20'        Decl.  +  14°  55' 

1909.65             347-87             91-26 
The  close  pair  has  no  certain  proper  motion. 

1906.906              59?2                  2*70 
6.964              58.9                 2.72 
7.675              60.4                 2.67 

Groombridge       0*002    in    241^9 
Battermann         0.017    in    229.7 

From  the  astrographic  positions: 
1903.96           348":o          90*63           Catania. 

AB  and  DM  (51°)  589  (9.  5) 
1909.627             82^80            125:58 
<i,             82.65            125-39 
.666              82.90            125.84 

1907.18                59.5                  2.70 
Prior  measures  discordant  in  distance. 

1366.     A.G.45-     (9-4-  --9-  5) 
R.  A.  2*  33™  49'        Decl.  +  7°  22' 

1909.65                82.78            125.60 
The  relation  of  these  stars  from  transit  and  photographic 

1907.636            342?i                  4''&9 
.638            342.1                  4-64 
-675            342.2                 4-85 

positions  is  given  : 
1875                83?3           124*7           A.  G.  Harv. 
1903.95           83.5           125.1           Catania. 

1907.65              342.1                  4.73 
No  other  measures. 

108 


Burnham:   Measures  of  Proper  Motion  Stars 


1369.    II 

2151.     (6.9.. 

13.1) 

1384.    | 

5  521.     (6.2. 

..II.2) 

R.  A.  2"  34m 

Is        Decl.  + 

74°  54' 

R.  A.  2"  34" 

59'        Decl 

+  47°  45' 

1912.564 
.622 
.638 

H4°3 
112.7 
112.7 

I5"8i 
16.11 
15.01 

1911-813 
-835 
-931 

I53?8 
150.3 
151-6 

5.96 
6.01 

1912.61 

113.2 

15.64 

1911.86 

I5I-9 

5-99 

The  later  measures  compared  with  the  single  position  by  112 
in- 1885  gives  for  the  proper  motion  of  the  principal  star: 
o"oS4    in     2Ol?i 

No  motion  found  in  the  star  catalogues.    The  companion  is 
ery  faint. 

1374.    2291.    (7.4-.. 7-7) 
R.  A.  2"  34"'  23"        Decl.  +  18°  17' 

A  and  B 
1907.692  ii8?6  3? 19 


.695 
.769 

117.4 
118.9 

3-39 
3-14 

1907.72 

118.3 

3-24 

A  and  C 

1907.692 

.695 

.769 

241^2 
241.2 
241.2 

6s?55 
65.35 
65.26 

1907.72 

241.2 

65.39 

B  and  C 

1907.692 
.695 

243-9 

67.35 

1907.69 

243-85 

67.44 

South's  angle  of  AC  is  31^5  sp.    This  was  erroneously  re- 
duced as  sf;  therefore  in  Part  I  of  G.  C.  for  I2i?5  read  238^5. 


1378.    0245.    (7.0...  9.  2) 
R.  A.  2"  34m  39"        Decl.  +  4°  21' 


1909.649 
.666 


20o?6 
292.1 


1.31 


1909.66  291.3  1.30 

h  263  and  star  10.7  m 
1909.627  191 °32  145^64 

.630  192.00  145.30 

1909.63  191.66  145-47 

h  263  is  about  2l/2m  f  and  6'  n  of  O2  45. 

1379.    Hii22     (9. 5... 10. 2) 
R.  A.  2"  34m  42'        Decl.  +  63°  39' 


1908.597 

.633 
-636 

2i6?5 
216.0 
217.6 

I0''26 

10.31 
10.18 

1908.62 

216.7 

10.25 

No  other  measures. 
8 


Change  uncertain.     The  large  star  has  no  sensible  proper 
motion : 

Groombridge       o"oi5     in     317^3 


1389.    2293.    (8. 5. ..it. 7) 
R.  A.2h35m3is        Decl. +  56°  33' 

A  and  B 

1909.802  84?!  9"33 

.818  83.8  9.04 

.821  84.2  8.95 

1909.81  84.0  9.11 

The  four  sets  of  measures  by  2,  A,  A  and  ft,  each  on  3  n, 
give  for  the  proper  motion  of  A : 

o'.'o54    in    3O5?8 

A  and  C  (12.5) 

1909.802     335°o7  79"64 

.818     335.03  79.72 

•838     334-97  79.42 


1909.82  335-02      79.59 

A  and  DM  (56°)  702 
1909.818     342?5o     i89"i4 
.821     342.60     189.09 
.838     342.50     188.84 

1909.83  342-53     189.02 

No  other  measures  of  C.    For  the  other  we  have : 
1872.1  341^9  i9i'-5  A.  G.  Hels. 

As  might  be  expected,  these  positions  give  substantially  the 
same  proper  motion  of  A : 

o?o86    in.   305^4 


1393.     0  Persei.    2296.     (4.2...io.o) 

R.A.2h35m59s        Decl. +  48°  43' 

A  and  C  (9.5) 


1910.739 

225^70 

73"89 

.742 

226.01 

74-28 

•  777 

225.78 

74-21 

.780 

225.81 

74-44 

1910.76 

225.83 

74-20 

The  proper  motion  of  6  Persei  from  measures  of  AC  (1853- 
1903)   is: 

Measures  o''352  in  iO4?2 
Auwers  0.340  in  105.2 
Boss  0.350  in  104.9 


109 


Burnham:   Measures  of  Proper  Motion  Stars 


1398.    P3o6.    (6.4-..H.O) 
R.  A.  2"  36™  53'       Decl.  +  25°  8' 

A  and  C(i2.l) 
1910.818             89?so             soTss 
.838             90.31              50.21 
.931             89.93             50.22 

1428.     Espin  120.     (8.  8...  13.  4) 
R.  A.2"4im6'        Dec!.  +  53°  26' 

1907.807              72?3                  4"27 
8-559              72.4                 4-45 
8-597              72.9                 4-  ii 

1908.32                72.5                 4.28 

1434.     Espin  51.     (9.  3...  10.  4) 
R.A.2"4im36'        Decl.  +  53°  26' 

AandB 
1907.807            3o8?4                67772 
7.867            308.5                68.05 
8.559            308.3                67.75 

1910.86               89.91              50.33 

For  an  independent  value  of  the  proper  motion  of  AB. 
Bossert     0^163    in    90" 

1406.     Espin  9.     (8.0...  n.  6) 
R.  A.  2'  37"  55'       Decl.  +  52°  39' 

A  and  B 
1907.807             29?9                2:45 
7.867             27.8                 2.70 
8.5S9             25-  1                 2.49 
8.573             26.1                 2.42 

1908.08              308.4               67.84 

B  and  C  (10.6) 
1907.807            257?3                  2734 
7.867            256.4                  2.44 

8.559                257.5                       2.20 

1908.20               27.2                 2.52 
A  and  C  (13.5) 

1907.867                 302?9                       I0''22 

8.597            305.3               10.37 

1908.08           257.1               2.33 
No  other  measures. 

1435.    A.G.52.     (9.  5...  9.  8) 
R.  A.  2"  41"  38'        Decl.  +  7°  3' 

1907.692              5i?9                17761 
•  695              50.9                17-28 
.769              50.3                17-33 

1908.23             304.1               10.30 
The  faint  star  not  previously  seen. 

1410.    2303.    (8.5..-  9-5) 
R.A.2b38m35'        Decl.  —  2°  28' 

1908.898            I79°2                 5"97 
9.630            180.4                 5-65 

9.703        179-9            S-TO 

1907.72                51.0                17.41 
The  distance  given  in  G.  C.  Part  I  is  much  too  large. 

1450.    41  Arietis.    O2  47  rej.    (4.1.  ..11.2) 
R.  A.  2"  42"  55'       Decl.  +26°  46' 

A  and  B 
1912.675            275?!               23762 
.695            273.1               23.65 
.717           274.8               23.36 

1909.41          179.8            5.77 

No  change. 

1417.    Hn64.     (8.2...  12.0) 
R.  A.  2'  39™  20-        Decl.  +  i°  3' 

1906.796           2i6?o                4*85 
7.636            218.5                 5-22 
7.638           219.7                 S-39 

1907.36             218.  i                 5.15 
Probably  fixed. 

1427.     2305-     (7-  3-..  8.  2) 
R.  A.  2*  40-  41'       Decl.  +  18-52' 

A  and  €(12.9) 
1910.931             34?i8             88769 
•933             33-63             88.80 
•971             33.67             88.35 

1912.69             274.3               23.54 

AandC  (n.o) 
1912.675            2ii?4               31756 
.695            210.8               31.62 
.717            210.4               3i-5o 

1912.69             210.9               31-56 

A  and  D  (9.5) 
1912.675            23i?75            125712 
.695            231.80            125.03 
.717           231.88            124.55 

1910.94               33.83             88.  61 

For  proper  motion.    No  other  measures  of  C. 
Battcrmann         0^174    in     I5O?2 
Porter                  0.221     in     140.2 

1912.69             231.81            124.90 

no 


Bnrnham:   Measures  of  Proper  Motion  Stars 


The  distant  star  is  DM  (26°)  470.    From  the  measures  of  the 
small  stars  (1852-1912),  we  have  for  the  proper  motion  of  41 
Arietis: 
AB        R.  A.  +  o"o8s        Decl.  —  o"ii3 
AC                     0.073                      0.105 
AD                     0.043                      o.iu 

1478.    A.  G.57-     (9.  3-  •  -io.  5) 
R.  A.  2"  46-"  55'        Decl.  +  1  1  °  49' 

1906.706            348^7                io"78 
7.022            347.5                10.58 
7.636            348.3                10.82 

+  0.067                 —  o.iio 

Therefore  the  corrected  proper  motion  is  : 
o''i29    in     I48?6 

Some  of  the  prior  determinations  from  the  catalogue  are  : 
Newcomb      o"i3O    in     u8?7 
Auwers         0.117    in     I54-I 
Boss              0.131     in     149.4 
Hussey          0.139    in     145.3 

The  last  value  is  from  measures  of  AB  and  AC  to  1898. 

1907-15              348.2                10.73 
Measures  discordant. 

1489.     2324^;.     (6.  7.  ..12.  2) 
R.  A.  2"  48™  27'        Decl.  +  46°  41' 

1910.931            203?4                24*74 
•933            203.0                24.49 
.950            201.9                24.19 

1457.    2312.    (7.  i...  8.0) 
R.  A.  2"  44™  IIs        Decl.  +  72°  24' 

A  and  C  (9.2) 
1912.564            I28?93             42"6o 
.583            128.57             42.38 
.619            128.55             42.31 

1910.94              202.  8                24.47 
The  other  measures  are  of  late  date. 

1506.     Ho  219.     (8.  1...  12.  2) 
R.  A.  2"  5  im  57'        Decl.  +  37°  24' 

TOO7    6O2                   2AQ°A.                          6"74. 

1912.59             128.68             42.43 
As  there  has  been  no  change  in  the  small  star  in  80  years,  it 

.695            250.4                7.02 
.772           248.6                6.93 

is  safe  to  say  that  the  Struve  pair  has  no  proper  motion.    There 
probably  is  an  error  in  the  R.  A.  sign  in  one  of  the  Greenwich 
catalogues  : 

Groombridge       o'.'o82    in     127^7 
Gr.  (1900)            0.082    in    232.3 

1463.     2316.     (8.5...  8.7) 
R.  A.  2"  44™  34"        Decl.  +  36°  48' 

1907.692            I34°6                I4"29 
.695             134-7                14-33 

1907.72           249.5              6.90 

The  declination  of  this  star  in  Part  I  of  the  General  Cata- 
logue is  printed  +  34°  24'  instead  of  +  37°  24'. 

1519.    112167.   (8.5...  9.0) 
R.  A.  2"  53™  7'        Decl.  +  44°  25' 

A  and  B 
1909.706              33  °2                37"65 
.722              33.0                37.42 
.725              33-4                37-60 

.711             134-8                14-31 

1909.72                33.2                37.56 

1907-70              134-7                M.SI 
Very  little  change,  if  any. 

H  2167  (B)    and  h  277 
1909.706              89^6                48"2 
.722              89.5                47-3 
.725              89.6                49-2 

1474.     A.G.56.     (9.  i...  9-0 
R.  A.  2"  46'"  24'        Decl.  +  10°  11' 
1906.796            io8?5                  6"62 

1909.72                89.6                48.2 

H  2167  (A)  and  h  277 
1909.722              64^2                75"8 
.725              64.7                77-4 

7.022             109.7                  6.78 
7.636            110.4                6.90 

1909.72                64.4                76.6 

1007.15              109.5                 6.77 
Earlier  measures  discordant. 

The  Rosse  nebula  in  the  field  with  h  277  is  large,  very  dif 
fused,  and  with  no  central  condensation. 

Burnham:   Measures  of  Proper  Motion  Stars 


1525.    A.  G.6o.    (9.0...  9.  2) 
R.A.2»S3™43t       Decl.  +  i4°3' 

1907.636            i6o?2                6?54 
.638            161.1                 6.67 
.675            160.0                6.39 

1559.    52  Arietis.    2346.     (6.0.  ..6.0) 
R.  A.  2"  58'"  24"        Decl.  +  24°  47' 

AB  and  E  (12.3) 

1911.870            I9i°47            I34"4i 
.931             191.00            133-61 
•947             I9I-53             133-01 
•950            191.40            133-44 

1907.65                I<«M                    6.53 
Prior  distances  discordant. 

1539.     H2I09.     (9.  3...  9.  4) 
R.  A.  2"  55™  25'       Decl.  +  52°3' 

1908.785            3"°3                  7"93 
.788            311.4                 7.99 
.804            3"-7                  7-91 

1911.92              I9I-35             133-62 

Faint  star  for  the  proper  motion  of  AB.    This  is  very  un- 
certain from  meridian  positions  : 
Auwers         0*032    in    245?6 
Boss              0.015     in     163.7 

1575.    2354^;.     (8.  6...  9.  4) 
R.  A.  3"  i™  4'        Decl.  +  24°  7' 

1911-813              53°i                34-'32 
•835              53-7                34-49 
•870              52.5                34-07 

1908.79              311.5                  7.94 
Only  late  measures. 

1544.    Y  Persei.    H2I7O.     (3.o...ii.o) 
R.A.2»s6"6'       DecI.  +  53°2' 

1909.802           325?02             56^70 
.818           325.18             56.86 
.821            324-84             56.91 
•  838            325-23             57-24 

1911.84                53.1                34.29 

If  the  A.  G.  proper  motion  of  A  is  correct,  the  companion  is 
moving  with  the  other. 

A.  G.  Berlin      0^096    in    238?7 

1583.    26,  App.I.    (7.0...  7.0) 
R.A.3"2m47'       Decl.  +  7°o' 

1908.671            i63?o7             8i?2o 
.689            162.75             81.31 
.692            162.95             80.93 
.709            162.89             80.94 

1909.82             325.07             56.93 

The  amount  and  direction  of  the  proper  motion  of  y  Persei 
as  derived  from  meridian  observations  seem  to  be  very  un- 
certain, and  they  only  show  that  the  motion  if  any  is  small. 
Some  of  the  results  are: 

Auwers               o"on    in    236?4 
Groombridge       0.023    in     161.7 
Newcomb            o.oio    in    115.0 
Boss                    o.oio    in    158.2 

Nothing  can  be  inferred  from  values  so  contradictory.    The 
measures  of  the  small  star  show  that  the  movement  of  the  large 
star  is  substantially  all  in  R.  A.  The  three  positions  (1879-1909) 
give  for  the  proper  motion  of  y  Persei: 

oTo53    in    261  ?3 
The  measures  of  the  small  star  should  be  continued. 

1550.    £341.     (7-7-..  9-7) 
R.  A.  2"  56"  57'       Dccl.  —  2°  23' 

I9I0.933            225?8                8T82 
n.  088           227.9                8.55 
11.720           226.4                8.71 

1908.69             162.91             81.09 
No  relative  change. 

1586.    Hii32.     (9.3...  9.  4) 
R.  A.  3"  3™  48'       Decl.  +  66°  33' 

1907.711             23?8                 7'ri8 
.791             23.2                7.19 
.807             22.3                 7.28 

1907.77                    23-1                       7-22 

No  other  measures. 

1590.     II  V.  117.     (7.  5...  8.  5) 
R.A.3h4mi7'        Decl.  +  21°  58' 

1908.845            320?6                32':s4 
.862            320.2                32.97 
.884            319.8                32.90 

n,(vS.X(,              3^.2                32.80 

These  measures  show  that  the  companion  has  the  same  proper 
motion  of  0^113  in  i6s?8. 

1911.25             226.7                8.69 
Apparently  fixed. 

112 


Burnham:   Measures  of  Proper  Motion  Stars 


1597. 

Ho  501.     (8.O.. 

12.  0) 

There  seems  to  be  no 

relative  motion. 

The  proper  motion 

of  the  large  star  is  : 

R.  A.  3" 

4m  52'        Decl.  + 

34°  32' 

Battermann          o"oi9    in 

I39°8 

1907.772 

207?! 

#38 

Schroeter 

0.022    in 

140.9 

.807 
.810 

203.5 
205.6 

9.40 
9-43 

Boss                     0.035    in 
Groombridge       0.031     in 

88.4 
109.0 

1907.80 

205.4 

9.40 

Prior  measures  very 

discordant  in  distance. 

1642. 

2368.     (8.  5...  8 

•5) 

R.  A.  3"  10 

m  30'        Decl.  +  68°  4' 

A 

and  C  (12.7) 

1614. 

O252.     (6.4.. 

-7-0) 

1911-835 

36?27 

66724 

•931 

36.45 

65-71 

R.  A.  3"  7™  2"        Decl.  +  65°  13' 

.942 

37-20 

65-06 

AB  and  C  (12.7) 

1911.90 

36.64 

65.97 

1911.950 

222?40 

8o788 

B  and  C 

12.564 
12.269 

223.00 
222.93 

79.72 
80.82 

1911.870 

64:64 

65.63 

1912.38 

222.78 

80.47 

•  y4^ 

oV  • 

1911.90 

38.69 

65.08 

No  other  measures  of  the  small  star. 

The  proper  motion  of 

the  close  pair  is  somewhat  uncertain.    In  addition  to  the  values 

given  in  the  General  Catalogue  we  have : 

Auwers  o"o32    in    277?! 

Greenwich  0.018    in    293.2 

Boss  0.018    in    337.9 


1617.    0530.     (7-0... 9- 7) 
R.  A.  3"  7m  18"        Decl.  +  22°  30' 

A  and  B 
I9".835  39°43  47"o6 


.870 
•  931 


40.10 
40.03 


47-17 
47-45 


1911.8 


39-85 


47-23 


From  the   four  sets  of  p"  measures  (1879-1911)  the  proper 
motion  of  the  principal  star  is: 

o"o6s    in    8o?o 

From  the  star  catalogue  places : 

A.  G.  Berlin      o"o55    in    ox>?o 


1628.    H  1133.    (6. 9... ii. 3) 
R.  A.  3"  8m  35'        Decl.  +  69°  19' 

1006.813  203?8  30764 

7.562  203.9  30.88 

7.578  204.0  31-14 

7.581  203.8  31.11 


1907.38 

1908.845 
.862 


203.9 

203?8 
204.4 
204.7 


30-94 

30777 
30.78 

3i.3i 


1908.86 


204.3 


30.95 


For  the  proper  motion  of  AB. 

Schroeter      0^152    in     155^0 


1655.    P  1294.    (8.  8...  9.0) 
R.  A.  3"  I2m  24'        Decl.  +  46°  15' 


1906.813 
7.562 
7.58i 


228^5 
228.7 
229.6 


6.42 
6.41 


1907.32  228.9 

The  components  are  red  and  green. 


6.35 


1663.    2375.    (8.0...  10. i) 

R.  A.  3"  13™  19'        Decl.  +  23°  15' 

A  and  C  (13.2) 


1911.777 
.813 


1911.81 


289.90 
200.03 

289.85 


64783 
65.06 
64.88 


64.92 


For  the  proper  motion  of  AB. 

A.  G.  Berlin     o'.'oSi     in     170^2 


1668.    2377.    (8. 3..- 8. 7) 

R.  A.  3"  13™  43"        Decl.  +  18°  45' 

A  and  C(n.s) 

1912.678  22I?2  24'f53 

.695  222.7  24.47 

.717  222.6  24.84 


1912.69 


24.6l 


Very  little,  if  any,  change  in  the  faint  companion,  and  only  a 
little  motion  in  the  close  pair. 


Burnham:   Measures  of  Proper  Motion  Stars 


1698.   2384          (7.  8...  9.0) 
R.  A.  3"  18™  46'        Decl.  +  59°  29' 

A  and  C  (10.6) 
1908.845  340?6o 


For  the  proper  motion  of  AB.    This  has  been  given  : 


.862 


340.35 
339.95 


i\7".o2 
116.62 
116.72 


1908.86  34O-30 

No  sensible  proper  motion. 
I879-39  339°9S 


116.79 


117^09 


Bl. 


1704.     Holmes.     (8.8...  11.2) 
R.  A.  3"  20™  2"       Decl.  +  59°  30' 


1907.711 
.772 
•791 


53?3 
52-6 
53.9 


5^03 
5.05 
4.78 


I907-76 


53-3 


4-95 


Prior  distances  discordant.    This  is  DM  (59°)  661,  the  place 
of  which  for  1880  is  as  given  here. 


1711.    2390.     (4.8...  9.2) 
R.  A.  3"  20"  51'        Decl.  +  55°  2' 

A  and  C  (10.0) 

1910.818  171^87  109*95 

.838  172.45  109.95 

.856  171-63  110.26 


1910.84 


171.98 


iio.os 

For  proper  motion.  The  values  from  the  meridian  observa- 
tions are : 

A.  G.  Harv.         0^079    in    287^6 
Kustner  0.050    in    247.7 

Groombridge       0.028    in    284.6 
Boss  0.033    in    266.6 


1712.    H3574 
R.  A.  3"  20"  57'       Decl.  — 21  "56' 

Lack  of  description  makes  it  impossible  to  identify  this  with 
certainty.  The  "cometic  nebula"  referred  to  by  Herschcl  is 
I.  60;  and  h  2534  is  i"  40"  />  the  place  of  II  3374. 


1720.    66  Arietis.    3878.     (6.0... 12. 2) 
R.  A.  3"  21"  28'        Decl.  +  22°  23' 

A  and  C  (12.4) 

1911.625     226?oo  150*75 

.644     226.30  I5I-55 

.663     226.10  151.72 


1911.64 


226.13 


151-34 


Auwers 

Porter 

Boss 


o"i20 
0.115 
o.in 


i8s?3 
186.9 

175.7 


1724.    (?879.    (6.5... 12. 5) 
R.  A.  3"  22'"  3'        Decl.  +  10°  58' 


1912.675 
.678 
•695 


7o?75 
70.82 
70-43 


24^50 
24.80 
24.63 


1912.68 


70.67 


24.64 


No  sensible  change  since  1878.    No  proper  motion  found  in 
the  catalogues.    The  large  star  is  Lalande  6400. 


1729.    0256*7.     (6.5...IO.O) 
R.  A.  3"  23""  6"       Decl.  +  47°  27' 


1910.950 
11.529 
11-545 


3S'°97 
352-08 

352.53 


25.83 
25.93 


I9II-34 


352.19 


25.89 


The  four  positions  by  A,  Hu  and  fJ  on  ion  (1867-1911)  give 
for  the  proper  motion  of  A : 

0*072    in     i69?5 

The  meridian  value  is  too  small : 

Greenwich      o"o45     in     143^8 


1730.     H  IV.  89.     (8.0... 9. 2) 

R-  A.  3"  23"'  35'        Decl. +  19°  41' 

A  and  B 


1909.744 
.760 


146.35 


20.28 


1909-75 


146.45 


A  and  C  (12.2) 
1909.742     203?ss 
.744     203.86 
.760     203.95 


20.18 

sol'62 
50.36 
50.96 


1909.75  203.79  50.65 

As  the  components  have  a  common  proper  motion,  I  have 
connected  a  third  star.    The  proper  motion  of  A  is  : 
Porter     o".203    in    io8?o 


1731.    27,App.I.     (6.9...  7.4) 
R.  A.  3"  23™  48'        Decl.  +  27°  19' 


1910.838 
-856 
•876 


233?st 
233.23 
233.58 


44^03 
43.90 
44.07 


1910.86 
No  change  since  1836. 


233.44 


44-00 


"4 


Burnham:   Measures  of  Proper  Motion  Stars 


1732.    2396.    (6.  3...  8.0) 
R.  A.  3"  23™  55s        Decl.  +  58°  22' 
A  and  C  (10.8) 
1908.845             I02?o7             i64"53 
.862             101.72             165.04 

1748.    Hn65.     (9.4.-  -9-8) 
R.  A.  3"  25™  24'        Decl.—  6°  6' 

1907.788                7°8                  3"89 
.791                6.7                  3.96 
.845                9-8                 4-13 

.882             101.93             165.55 

1907.81                  8.1                  3-99 

1908.86              101.91             165.04 

The  early  measures  of  1879  differ  among  themselves  in  dis- 
tance by  as  much  as  z"3,  but  there  is  no  evidence  of  any  change. 

1879.64           ioi?88           i6s"55           4"           Bl. 
No  proper  motion  found  for  the  large  star. 

Apparently  unchanged. 

1750.    A.G.68.     (7.  5...  9-  5) 
R.  A.  3"  25m  37'        Decl.  +  11°  8' 

1906.772            248?9                17"  19 
.796            248.2                17.09 
.813            249.3                17.06 

1737.    2407.     (8.  2...  10.  7) 
R.  A.  3"  24™  16'        Decl.  -n°  33' 
A  and  €(12.7) 

1912.675                 20I?82                  I42"05 

.735            201.  20            142.29 

1906.79              248.8                17." 
No  motion. 

I?1?!      R  787      (8  o      12  o) 

1912.71              201.51             142.17 
No  change  in  AB,  but  common  proper  motion  : 
Porter      o"i4i     in    200^7 

R.  A.  3"  25™  49'        Decl.  +  48°  13' 

A  and  C  (n.o) 
1912.622            I76?o8             36"20 
.638            175.44             36.13 
.675            176.05             36.07 

1745.      H2I90.       (I2.0...I2.9) 

R.A.3B24m52'        Decl.  +  72°  1  1' 

1909.627            320?9                I4"93 
.649            3I5.7                H.22 
.706            320.2                14.87 

1912.64             175-86             36.13 

It  is  certain  now  that  there  is  no  intermediate  companion  at 
12"  distance.     The  only  other  measure  of  C  is  that  given  in 
G.  C.  Part  II. 

1909.66              318.9                14-67 

H  2190  and  h  300 
1909.627            i62?3               54''24 
.649            160.7               S4-5I 
706            55-15 

1755.    O257-     (7-5-  ••"•o) 
R.A.3b26m2o'       Decl.  +  22°  58' 
A  and  B 

inn?  602               ^2O°2                     Q//CSO 

1909.66             161.5               54.64 

.769               319.7                     9-45 
.778               320.3                     9.58 

No  other  measures,    h  300  is  some  brighter  in  the  middle,  but 
bisection  not  very  exact. 

1747.    2400.     (7-0...  8.0) 

1907.75                 320.1                     9-51 

A  and  C  (7.0) 
1907.692            2  14?  9                7o"74 
.753            214.4                70-88 
.769            214.6                70.45 

R.  A.  3"  25™  12'        Decl.  +  59°  38' 

AB  and  C  (10.3) 
1908.845            238^87              92".2i 
.862            237.28              92.27 

1907.74              214.6                70.69 

C  and  c  (i3-5) 
1907.692            I7o!8               34"86 
.788            168.5               35-05 

.882            237.30              92.22 

1907.74             169.6               34-95 

1908.86              237.82              92.23 

Probably  without  change. 
1879.40           236^97           92"68           2n            Bl. 

The  angle  of  AC  in  O2  is  180°  in  error.    It  is  correctly  given 
by  Dembowski,  but  was  changed  in  Part  I  of  the  General  Cata- 
logue to  conform  to  the  other. 

115 


Burnham:  Measures  of  Proper  Motion  Stars 


The  proper  motion  in  R.  A.  of  the  following  one  of  the  two 
principal  stars  is  given  o!oo46,  but  by  error  in  reducing  this  to 
arc  it  was  taken  as  o?O46.  The  proper  motions  by  Rechenberg 
should  read: 

A       0^073    in    241  ?2 
C        0.057    in    256.8 

There  are  no  other  measures  of  the  faint  companion  to  C. 


1759.     P  788.     (8.3...  10.  5) 

R.  A.  3"  27™  9-        Decl.  +  42°  1  1' 

A  and  B 


1907.807 
.810 

.845 

306.1 
305-6 

276i 
2.52 
2.59 

1907.82 

306.0 

2-57 

A  and  C  (8.8) 

1907.791 

82?3 

34^17 

.807 

82.1 

34-15 

.810 

81.7 

33.78 

•845 

82.6 

34-23 

1907.81  82.2  34.08 

No  sensible  change  in  either  since  1881. 

1761.    yTauri.    2412.    (6. 6... 6. 7) 
R.  A.  3"  27™  20-       Decl. +  24°  4' 

A  and  B 

1908.709  146^0  o"iS 

.824  148.0  0.17 

1908.77  147.0  0.17 

The  proper  motion  is  small : 

Auwers         0^035    in     i8o?o 
Boss  0.032    in    146.6 

1771.    24i6 rej.     (8.8... 9.7) 
R.  A.  3*  28™  2-       Decl.  +  19°  24' 

A  and  a  (12.0) 

1910.893  292?3  22^65 

.895  291.9  22.4! 

•931  293.0  22.72 


1910.91  292.4 

No  early  measures  of  this  star. 


22.59 


1772.    2415.     (8.3...io.o) 
R.A.3»28m7'        Decl.  +  26°  27' 


1907-772 
8.636 
8.652 


52.9 
52.4 


15*27 
15.36 
15.37 


>9o8.35  52.6  15.33 

No  change  since  1866.    There  is  a  13  m  star,  o".6:  37^4. 


1781.     02(APP.)36.     (6.3...  7-3) 
R.  A.  3"  29™  26"        Decl.  +  63°  29' 

1007.578 
•58i 
.657 


7o?2 
70.2 
70.2 


45.79 
45.91 


1907.61 
No  change  since  1875. 


70.2 


45.84 


1801.      0I23I.       (8.  2...  12.  5) 

R.A.3"32m45'        Decl.  +  65°  36' 


1909.744 
.782 


A  and  B 
13  ?6 
16.7 


2.04 


1909.76 


15.1 


A  and  C  (8.3) 

1909.744  253?37 

.760  253.13 

.780  253.25 


2.44 


84^44 
84.76 
84.48 


1909.76 


253.25 


84.56 


Further  measures  of  C  will  give  an  independent  value  of  the 
proper  motion  of  AB. 

Schroeter     0^072    in     157?8 


1802.     Piazzi  III.  97.     (6.  6...  13.0) 
R.  A.  3"  32™  50'        Decf.  +  59°  35' 

A  and  B 

1909.589     95?9      20^68 

20.85 


.627 
1909.61 


c>4-2 
05.0 


A  and  E  (10.8) 
1908.939     i6o?25 
9-573     160.68 
9.589     160.75 


20.76 


168740 
168.09 
168.19 


1909.37 


160.56 


168.23 


The  only  other  measure  of  the  distant  star  is  : 
1879.40  i6o?i7  i6;:'24  2n 


Bl. 


In  my  measures  in  G.  C.  Part  II  for  CD  read  AD.  The 
proper  motions  of  the  two  principal  stars  are  given  in  Groom- 
bridge  : 

A        0*009    in    3H?l 
D        0.021     in      52.3 

From  meridian  observations  we  have  for  AD  : 

1810  33?2  54^4  Groombridgc 

1875  37-0  55-6  A.  G.  Hels. 

1893  35-2  55-8  Gr.  (loyear) 


I  If, 


Burnham:   Measures  of  Proper  Motion  Stars 


1816.   2433n?;.    (8. 4... 9. 5) 

R.  A.  3"  34'"  19"        Decl.  —  8°  28' 


1911.720 

•  755 

•  775 


332.90 
333-50 
332-73 


36^03 
36.13 
36.05 


I9II-75  333-04  36.07 

The  only  other  measures  are  my  own  in  1904. 

1821.    2436.     (7.0... 8.2) 
R-  A.  3"  35'"  1 1 '       Decl.  —  13°  o' 


1908.671 
.692 

•  750 


236^2 
236.1 
236.2 


37"i7 
37-35 
37-40 


1908.70  236.2  37.31 

The  apparent  motion  of  A  from  the  measures  is : 
o"n6    in    69^4 

No  third  star  near  enough  for  the  micrometer. 


1825.    p  1182.    (6. 4... 14.2) 
R.  A.  3"  35m  30s        Decl.  +  48°  8' 

A  and  C  (13.5) 

1910.627            244°4i  18757 

.660            244.33  18.68 

.701            244.20  18.71 

1910.66  244.31  18.65 

The  proper  motion  of  A  is : 

Battermann    07028    in    i86°i 


1839.    31041.     (6. 2... 6. 3) 
R.  A.  3"  37™  19"        Decl.  +  27°  3 1' 

A  and  B 

1908.692      42?03  125714 

.728      41.85  125.36 

41.80  124.79 

41.80  125.11 


•  750 
.766 


1908.73  41.87  125.10 

B  and  C  (12.8) 

1908.692            334?6  1 1  "69 

•  750            334-7  "-97 

.766            333-8  11.94 

1908.74  334-4  "-87 

The  four  sets  of  measures  of  BC  (1888-1908)  give  for  the 
proper  motion  of  B : 

07232    in     I3i?2 

The  motion  from  meridian  positions  is  too  large : 
Rechenberg      07331     in     123^3 


1843.     Y  Camelopardali.    H  2200.     (4. 7... 12.0) 

R-  A.  3"  37"'  41'        Decl.  +  70°  58' 

A  and  B 


1009-742 
.76o 

•763 
.78o 


240.18 
239.78 
240.55 


55-90 
56.04 
56.60 


1909.76  240.22  56.22 

The  other  measures  of  this  are  of  recent  date. 


A  and  C  (8. 5) 
1909.742  84? 12 


.760 

.763 
.780 


83.95 
83.73 
84.07 


106741 
105.81 
106.79 
106.19 


1909.76  83.97  106.30 

C  is  DM  (70°)  260.    From  meridian  observations  we  have: 
1842  83^8  108"!  O.  Arg.  N. 

1900  83.9  106.9  Greenwich. 

The  proper  motion  of  the  large  star  is  given : 
Auwers  o7o59    in     156^9 

Newcomb  0.064    in     152.7 

Groombridge       0.054    in     155.1 
Boss  0.046     in     140.9 


1848.     19  Pleiadum.    H  3251.     (6.O...IO.O) 
R.  A.  3"  38'"  5"        Decl.  +  24°  6' 


1911.663 
.736 

•  755 


329.20 
329-I3 


68!' 1 1 
68.01 
68.02 


1911.72  329-39  68.05 

From  the  measures  of  the  faint  star  by  HI  and  (5  on  ion 
(1880-1911)  the  proper  motion  of  A  is : 
07047    in     i 28? 2 

The  meridian  observations  give : 

Auwers         07033    in     199^5 
Boss  0.049    in     167.1 


1854.    2443-     (8. 2... 8.8) 
R.A.3638m47"        Decl. +  41°  7' 

A  and  C 
1911.663  I72?35  20^84 


.720 

-755 


172.13 
172-73 


20.66 
20.49 


1911.71  172.40  20.66 

The  proper  motion  given  in  the  General  Catalogue  from  the 
measures  of  AC  to  1906  will  not  be  sensibly  changed  by  the 
later  position. 

Measures       17328    in     155^2 

Porter  1.358     in     155.0 

Kustner         1.437     in     148.7 


117 


Burnhatn:   Measures  of  Proper  Motion  Stars 


1859.    29  Tauri.    H  2004.    (5. 5...  12) 


1906.772 
.796 
.813 


64?! 
64.0 
63.8 


65.39 

65.74 


1906.79  64.0  65.28 

No  early  measures.    The  proper  motion  of  the  large  star  is 
uncertain : 

Auwers        0*014    in    239?6 
Boss  0.030    in     115.8 


1860.    H  1139.     (7. 4... 9. 1) 
R.  A.  3'  39"  20'       Decl.  +  70°  7' 


1909.742 
.760 
.763 


175°  i 
I75-I 
175-2 


47V24 
47-20 
47.09 


1909.75 


I75.I 


47.18 


B  is  the  9.3  m  star,  DM  (70°)  263. 

The  only  other  measure  is  of  late  date.    The  proper  motion 
of  A  is  given : 

Schroeter     0*056    in    2o8?9 


1881.    H  665-    (98...IO.O) 

R.  A.  3"  39™  23'        Decl.  +  30°  26' 

A  and  C  (11.3) 


1909.706 
.782 
.838 


255-9 
256.0 


14-79 
15." 
15.22 


1909.78  255.8  15.04 

The  only  other  measure  is  given  in  G.  C.  Part  I. 

1869.    2447.    (7-8... 9- 5) 
R.A.3'40-81       Decl.  +  37°  58' 


1911.663 
.720 
•  736 


167.42 
167.38 


28*23 

28.13 
28.13 


1911.71 


167.38 


28.16 


The  principal  star  has  a  small  proper  motion.     From  the 
measures  of  %  and  0  (1836-191  1  )  this  is: 
0*062    in    28i?o 


1877.    2446.    (7.0... 9. 2) 
R.  A.  3' 40"  25'       Decl.  +  52°  17' 

A  and  B 
1910.701  254?o  8*73 


•  703 
•739 


253.8 
253-9 


8.78 
8.37 


1910.71 


253.9 


8.63 


A  and  C(i3.5) 

1910.701  37?s  n  "60 

•703  39-5  11.69 

•739  39-4  11-82 


1910.71 


38-8 


11.70 


A  is  the  brightest  star  in  h  308;  the  others  much  smaller. 
No  change  in  AB. 

The  principal  star  is  given  a  small  proper  motion: 
Battcrmann      0*048    in    22i?7 


1882.    01184 
R.  A.  3"  41™  H'       Decl. +  22°  o' 

About  10'  distant  from  this  pair  sp,  is  a  nebula  discovered  by 
Lohse  (Dreyer  1456)  about  a  pair  of  faint  stars  130°  19"; 
"  companion  nebulous."  In  measuring  this  pair,  I  could  not  see 
any  trace  of  a  nebula  in  the  field.  The  magnitudes  of  the  stars 
were  estimated  10.8  and  11.5. 

1909.760  I3o?9  9*36 

.938  130.2  9.54 


1909-85 


130.5 


9-45 


1886.    30  Tauri.    2452.    (4. 5. ..9. 6) 
R.  A.  3"  41- 41-       Decl. +  10°  46' 


1911.947 
11.950 
12.008 


59-4 
59-0 
57-8 


9"  10 
9.18 
9.12 


1911.97  58-7  9-13 

The  proper  motion  of  30  Tauri  is  very  uncertain  in  amount 
and  direction.  From  meridian  positions : 

Auwers         0*022    in     I99?3 
Boss  0.042    in     121.9 

The  measures  of  the  faint  star  show  that  the  motion  of  A  is 
nearly  all  in  R.  A.  From  the  observations  of  2,  A  and  0  on 
12 n  (1830-1911)  we  have: 

0*004    in    283? 5 

1888.    24s6r«/.    (8. 5... 9.3) 
R.  A.  3"  42™  io-       Decl. +  1°  13' 


1909.936 
10.701 
10.739 


119:0 
119.9 
120.3 


22*05 
21.69 
21.60 


1910.46  119.7  21.78 

No  change  apparent  from  the  measures. 

1896.    A.G.74-     (9. 3... 9-5) 
R.  A.  3"  42""  49'        Decl.  +  12°  33' 


1907.772 
•  778 
.791 


I95°4 
195-9 
195-6 


".48 

11.91 
11.96 


1907.78  195.6 

Prior  distances  discordant. 


n.77 


1 18 


Burnham:   Measures  of  Proper  Motion  Stars 


1905.    2459.    (7. 8... 10. 7) 
R.  A.  3"  43'"  33s        Decl.  +  29°  18' 

A  and  B 

1911.931  33o?8  i8"io 

•947  330.6  18.49 

•  950  331-1  18.33 


1911.94 

B 
1911.947 
•  950 

330.8 

and  C  (13.0) 

293  °o 
292.6 

18.31 

53"48 
53-89 

1911-95 

292.8 

53-68 

A 

and  E  (10.0) 

1911.947 

i84?78 

"9-'73 

11.950 

184.80 

119.96 

12.008 

184.92 

119.74 

12.  Oil 

184.95 

119.76 

1911.98 


184.86 


119.80 


From  the  measures  of  AB  the  principal  star  has  a  proper 
motion  of  o"o6s  in  about  180°.  No  other  measures  of  the 
faint  star. 

1913.     245S-     (8.2... 8. 7) 
R.  A.  3"  44'"  57s        Decl.  +  69°  10' 

A  and  B 
1909.821  i66?3  ii"96 


.838 
•933 


166.1 
166.2 


11.84 
11.91 


1909.86 


166.2 


11.90 


No  change  in  AB.    The  principal  star  is  given  a  small  proper 
motion  : 

Schroeter     o"o97    in     I09?2 

To  determine  whether  or  not  AB  has  any  proper  motion,  I 
have  connected  two  small  stars. 


1909.838 
10.627 
10.666 


A  and  C  (14.2) 

33i?73 
331-49 
331-83 


58.42 
58.32 


1910.38  331-68  58.29 

A  and  D  (12.6) 

1909.838     2io?97  o6:'57 

.933     211.29  96.20 

.936     211.08  96.19 


1909-90 


211. II 


96.32 


1921.    t,  Persei.    2464.     (2. 7. ..9. 3) 

R.  A.  3"  46"' 35s        Decl. +  31°  32' 

A  and  C  (ii.i) 


1911.947 
11.950 

12.008 

286?S3 
286.25 
286.68 

33"22 

32.59 
32.68 

1911.97 

286.49 

32.83 

A  andD  (9.3) 

1911.947 

196^98 

9o".8i 

11.950 

197.17 

91.22 

12.008 

196.93 

9i.iS 

12.  Oil 

197.02 

91.08 

1911.98 

197-02 

91.06 

The  proper  motion  of  £  Persei  is  wholly  uncertain,  so  far 
as  meridian  observations  are  concerned: 

Auwers  o"oos  in  2i2?6 
Newcomb  0.033  in  163.2 
Boss  0.021  in  143.1 

The  measures  of  the  distant  companions  show  that  the 
proper  motion  of  the  large  star  is  very  small,  if  any  at  all,  but 
further  measures  are  necessary  to  give  a  definite  value. 


1925.    Hn66.    (8.0... 12. 2) 
R.  A.  3"  46m  48s        Decl.  — 8°  51' 

A  and  B 
1910.701  35?8  2"os 


•  739 


37-2 


2.12 


1910.72 


36.5 


2.08 


A  and  C  (10.7) 

1910.678  I3°90  ii7"oo 

.739  14.03  117-48 

.760  14.00  117-49 

1910.73  13.98  117-32 

For  the  proper  motion  of  AB,  if  any,  I  have  connected  a  third 
star.  Three  small  nebulae  by  Stone  sf  are  too  diffused  for 
good  measures. 


1933.    43  Persei.    8440.     (5. 5. ..10.3) 
R.  A.  3"  47™  41'        Decl.  +  50°  21' 

A  and  C  (11.4) 
1908.843  133  ?28  I02:'24 


.845 
.862 


133-57 
132.88 


102.90 
102.66 


1908.85 


102.60 


133-24 

No  other  measures  of  this.    This  principal  stars  have  a  com- 
mon proper  motion. 

Auwers         o"i46  in  149^0 

Porter           0.155  in  147.6 

Rogers          0.151  in  141.8 

Boss              0.158  in  145.3 


1936.    Ho  325.     (6. 5... 13-0) 
R.  A.  3"  47m  53'        Decl.  +  30°  41' 


1910.893 
.895 
•  931 


I2°4 

10.7 
11.7 


22:93 
22.91 
23.32 


1910.91  ii. 6  23.05 

Change  doubtful.    No  proper  motion  found  in  the  catalogues. 


119 


Burnham:   Measures  of  Proper  Motion  Stars 


1961.    OSgSnr;.     (7.0...  8.  i) 
R.  A.  3b5iln3'        Decl.  +  47°  48' 

A  and  B 

1912.619            175-33              39"i4 
.622            175-70             39-42 
•638            i75-8o             39-24 

A  and  a  (12.5) 

1910.739            249?7                sS'/pi 
.760            250.5                39.38 
.770            250.6                39.41 

1910.76              250.3                39.23 

The  only  other  measures  of  the  faint  star  are  by  Doolittle 
in  1899. 

1983.    2476.     (7-  5-  --8.  7) 
R.  A.  3"  53™  36'        Decl.  +  38°  20' 
A  and  B 

I9I0.72O                 286?O                      2l"29 

.739            286.4                21.35 
.760            286.1                21.15 

1912.62              175.61              39-27 

No  sensible  change  since  1867.    No  proper  motion  found  for 
the  principal  star.    I  have  connected  an  exceedingly  faint  star, 
which  was  difficult  to  measure  on  each  night. 

B  and  C(i3-7) 
1912.622            i86?o               3i"54 
.675            182.3               32.23 
.678            183.4               30.94 

1910.74              286.2                21.26 
The  measures  show  rectilinear  motion  in  AB. 
B  and  C  (11.7) 

1910.720                 2I3?2O                   &9"72 

.739           212.90             69.48 
.760           212.93             69.29 

1912.66              183.9                31-57 

1969.    2475.    (8.  2...  10.  6) 
R.  A.  3"  52°  3'       Decl.  —  7°  28' 
1910.933             20?9                 7:59 

10.971                   22.2                       7.59 

11.088           21.5              7.59 

1910.74             213.01             69.50 

Third  star  measured  to  show  whether  there  is  any  proper 
motion  in  B. 

1999.     H22I7.     (12.  3...  13.0) 
R.  A.  3"  55™  15'       Decl.  +  52°  18' 
1910.818            287?8                  7"43 

H  2217  is  in  the  sf  part  of  h  310,  which  Herschel  calls  a 
"curious  knot  of  stars."    There  are  several  small  pairs  here; 
the  one  measured  corresponds  in  all  respects  to  the  description 
inH. 

2008.    Espin  55-     (8.  3...  12.  9) 
R.  A.  3"  56m  12'        Decl.  +  58"  58' 

1909.742            265^3                  9?9l 
.744           264.0               10.21 
.780           264.0               10.40 

1911.00              21.5                7.59 
Probably  unchanged. 

1975.    Y  Eridani.    H  3608.     (3  .  1  ...  13  .0) 

R.  A.  3"  52™  24'        Decl.  —  13°  51' 

1908.692           24i?8o             52*58 
8.750           242.53             52.96 
9-703            242-98             52.75 
9.725            242.53             52-79 

1909.22             242.46             52.77 

From  the  three  sets  of  measures  (1877-1909)  we  have  for  the 
proper  motion  of  y  Eridani: 
o"i24    in     137?! 

From  meridian  positions: 
Auwers         oTiio    in     I5l?9 
Newcomb      0.130    in     148.1 
Boss              0.132    in     148.4 

1977.     01042.     (7.  5...  8.  7) 
R.  A.  3'  52"  36'       Decl.  —  3°  o' 
A  and  BC 
1910.739              93°23              55'6g 
•760              93.53              55-84 
.770              93-08              55.47 

1009.76             264.4               10.17 

2013.    36  Tauri.    fJ  544-     (6.0...  12.  5) 
R-  A.  3"  57m  1  1'        Decl.  +  23°  46' 

1908.785            258?4                26T02 
.824            258.2                25.36 
.826            258.0                26.11 
.882            257.4                25.52 

1908.83              258.0                25.75 

It  is  probable  that  the  companion  does  not  share  in  the  small 
proper  motion  of  A. 
Auwers         oToi2    in    2I4?5 
Boss              0.022    in     190.6 

1910.76               93-28              55.67 

120 


Burnham:   Measures  of  Proper  Motion  Stars 


2014.   2485.    (6.1... 6.2) 

R.  A.  3"  S7m  i8s        Decl.  +  62°  o' 

A  and  a  (13.1) 

1910.678  256^7  6:'99 

.681  256.9  6.65 

.701  256.3  6.36 


1910.69 


256.6 


A  and  b  (12.7) 

1910.678  359-9 
.681  3S8.I 
.701  359-1 


6.67 


1 1  .10 
II. 01 

10.93 


1910.69 

1910.678 
.681 
.701 


359-0 

A  and  c  (13.2) 
I32°8 
130.4 
129.7 


ii.  01 


I4"44 
14.32 
14-42 


1910.69 


131.0 


14-39 


These  small  companions  are  not  in  2.  The  large  stars  not 
given  in  Boss'  General  Catalogue. 

A  and  d  (9.4) 

1910.666  76=63  I39''o9 

.678  76.80  138.60 

.681  76.77  138.79 


76.73 


138.83 


1910.67 

For  this  we  have  only : 

1881.48  76?I2  I39"3i  2n  Bl. 

These  stars  are  in  the  brilliant  Herschel  cluster,  VII.  47. 

2022.    0271.     (7-0... 9-0) 
R.  A.  3"  59'"  16*        Decl.  +  33°  7' 

A  and  C  (12.5) 
1008.843  ii9°5 


.884 


II9-5 
118.6 


35"27 
35-00 
35-22 


1908.87  119.2 

No  proper  motion  in  AB. 


35-i6 


2028.    8443.    (9-0... 9-9) 
R.  A.  3*  59™  49'       Decl.  +  14°  2' 

A  and  B 
1908.920  no?2O  42'' 07 


8.974 
9.071 


I 10:20 

109.55 
109.68 


42.32 
41.82 


1908.99 

1908.920 

8.974 
9.071 


109.81 
A  and  C  (8.0) 

305.15 
305-13 


42.07 


184.92 
184.89 


1908.99 


305.09 


184.88 


The  A.  G.  positions  of  A  and  C  give  303^0 :  183^6  (1875). 
The  three  stars  are  W  III.  1133,  "35  and  1127;  the  relative 
positions  in  that  catalogue  are  inconsistent  with  other  observa- 
:ions. 


2040.    2495.    (6.0... 8.8) 
R.  A.  4"  om  54"     Decl.  +  14°  50' 


1906.796 
.813 
.964 


219.4 
220.  i 
223.2 


3-70 
3-96 


1906.86 


220.9 


3-93 


Probably  unchanged.    No  proper  motion  found  for  the  large 
star.    Not  in  Boss'  General  Catalogue. 


2073.    vPersei.    0273.     (4. 5. ..12.0) 
R.  A.  4"  6m  5"        Decl.  +  48°  6' 

A  and  C  (10) 
1908.709 


.711 
.728 


231 °75 
231.62 

23L95 


84"34 
84.14 
84.33 


1908.72  231.77  84.27 

The  proper  motion  of  the  large  star  is  small : 
Auwers         o"o28    in     io8?5 
Newcomb     0.033    in     151.2 
Boss  0.030    in     154.3 


2081.    P  1278.     (6. 5...  13- 7) 
R.  A.  4"  7™  o'        Decl.  +  8°  35' 

A  and  C  (12.5) 

1908.884  253^39  54?73 

9-763  253.23  54.90 

9-838  253.10  55.15 

1909.49  253.24  54.93 

No  proper  motion  found  for  the  large  star. 


2102.    39  Eridani.    2  516.     (6.0... 9.0) 

R.  A.4h8"'4i"        Decl.  — 10°  33' 

A  and  C  (10.6) 

I9IL775  159°  15  149"  15 

.813  I59.30  148.87 

.832  I59.40  148.58 


159-28 


148.87 


1911.81 

The  large  stars  have  a  common  proper  motion.    No  change 
in  AB.    No  other  measures  of  the  small  star. 
Auwers         o"i64    in     193^0 
Boss  0.157    in    184.0 

Newcomb     0.151     in    184.6 


121 


Burnham:   Measures  of  Proper  Motion  Stars 


2103.    OZ(App.)44.    (6.2.  ..7.2) 

R.  A.  4"  8™  42'       Decl.  +  4S°S5' 

1908.709            322?os              58:35 
.711             322.00              58.29 

A  and  b  (11.5) 
1907.845                7?93            2io78i 
7-865                7.93            210.53 
8.000                8.12            211.09 
8.  022                8.20            211.43 

.728            321-95              58.19 

1907-93                  8.05            210.96 

1908.72              322.00              58.28 
No  relative  motion  since  1875. 

2106.    H  VI.  98.    (6.2...  6.  7) 

R.A.4'9-7'       Decl.  +  s°55' 
A  and  B 
1907.845            3I5°23              64774 
•865            315-15             64.85 
•879           315-23             64.91 

The  most  probable  value  of  the  proper  motion  of  the  large 
star  from  the  ten  sets  of  measures  of  Ao  and  three  of  A6 
(1850-1907)  is  as  follows: 

Aa        R.  A.  —  2:235        Decl.  —  37411 
Afr                      2.247                      3-409 

Taking  the  mean,  the  corrected  proper  motion  of  40  Eridani 
.is: 
4:080    in    2I3?3 

Other  values  from  meridian  positions  are  : 
Auwers         4:054    in    2ii?9 
Porter           4.108    in    212.6 

1907.86             315-20             64.83 

These  measures  give  a  smaller  distance.    The  meridian  posi- 
tions in  A.  G.  Leip.  give: 
1884.0              3I5?3                64:9 

The  proper  motion  of  A  is  given  : 
Bossert         0:175    in    2io?8 
Porter           0.169    'n    221.4 

Newcomb     4.081     in    212.7 
Boss              4.082    in    212.7 

Band  C 
1907.675              44?9                 2:62 
.810              42.0                 2.43 
.845              44.2                  2.51 
.865              44.2                  2.40 

AandC 
1907.865              47?42            215:78 
.879              47.45            215.67 
•974              47-43            215.57 

1907.80                43.8                 2.49 

1908.709                   42?2                         27&S 

.750             40.4                 2.62 
.824             45.3                 2.47 

1907.91                47.43            215.67 

.974             41.8                2.36 

The  A.  G.  Leip.  relation  is  : 
1885.3              47°4              21373 
implying  a  proper  motion  for  A  of  o"ii5. 

C  and  D  (9.3...  9.  4) 
1907.865            I38?40             52:71 
.879            138.85             52.64 
•974            138.75             52.83 

1908.83               42.6                2.57 

2118.    02(App.)46.     (7.0...  7.  3) 
R.  A.  4"  i  im  25"        Decl.  +  55°  14' 

1907.578            I59?57             98:93 
.581            159.80             98.86 

1907-91              138-67             52.73 

-638            159.75             99-10 

C  and  D  arc  DM  (5°)  616  and  617.    Repeating  the  measures 
of  these  stars  after  a  proper  interval  of  time  will  furnish  an 
accurate  and  independent  value  of  the  proper  motion  of  AB. 

2109.     40  Hridani.    2  518. 
R.A.4"9m52'       Decl.  —  7"  47' 
A  and  a  (n.o) 

1907.810              si?43            113:67 
7.845              51.20            II3-/6 
7.865              51.28            113.89 
8.000              51.60            "4.87 
8.022             51.33            114.67 

1907.60              I59-7I             98.96 

A  and  a  (12.0) 
1907.581             i88?6                33:67 

No  relative  motion. 
The  proper  motion  of  A  is  given: 
A.  G.  Harv.     0:09    in     180° 

2121.    S445.     (6.  5...  7-  2) 
R.  A.  4'  1  1™  56-       Decl.  +  49°  58' 

A  and  B 
1007-578            327°2S              73"7S 
•58r            327.47              73.56 
.638            327-55              73-92 

190;               51.  .17         "4-17 

1907.60              327.42              73.74 

122 


Burnham:   Measures  of  Proper  Motion  Stars 


The  four  positions  (1841-1907)  give  for  the  relative  motion 
of  A: 
o"o27    in    3io°2 

As  B  is  nearly  7  m,  this  motion,  wholly  or  in  part,  may  belong 
to  that  star.    To  determine  that  hereafter,  I  have  measured  a 
third  small  star: 
A  and  C 
IO°7-57S            260^70             150736 
.581            260.87            150.67 
.638            260.88             150.33 

2143.    Knott  2.     (9.  6...  9.  6) 
R.  A.  4"  I4m  49s        Decl.  +  19°  32' 

1907.022            202?4                 2"75 
.102            205.2                  3.20 
.118            205.0                 2.00 

1907.08              204.2                  2.95 

This  star  has  been  thought  to  be  variable. 
When  the  foregoing  measures  were  made,  Hind's  variable 
nebula,  which  is  about  20'  s,  was  examined  and  found  to  be  still 
invisible.    In  1890  the  nebula  was  very  plain  with  the  36-inch 
at  the  Lick  Observatory,  with  a  length  of  4"  or  5"  in  the  direc- 
tion of  about  150°  (Monthly  Notices  LI,  94).    The  9.4  m  star, 
DM  (19°)  705,  is  in  the  centre.    This  may  be  only  the  nucleus 
of  the  nebula.    The  magnitude  now  is  about  10.8.    The  faint 
nebula  in  the  field  sf>,  photographed  by  Keeler  with  the  3-foot 
reflector  (Monthly  Notices  LX,  424)  was  not  seen.    This  is  too 
faint  to  be  visible  with  the  largest  apertures  except  under  the 
most  favorable  conditions.    Nothing  seems  to  be  known  as  to 
the  period  of  Hind's  nebula.    (See  Pub.  L.  O.  II  p.  175.) 
The  8.7m   star,    DM  (19°)  704,   which   was   connected   by 
measures  with  the  nebula  in  1890,  has  a  small  companion' 
1907.102              40?o                59"39 
.118              40.7                59.04 

1907.60              260.82             150.45 

2126.    2523-    (7-2...  9-2) 
R.  A.  4"  I2m  34'        Decl.  +  23°  27' 

A  and  B 
1908.613             i62?3                io?37 
.633             162.9                10.36 
.636             162.2                10.36 

1908.63              162.5                10.36 

A  and  C  (8.0) 
1908.613             48^23            io8"49 
.633             48.03            108.48 
.636             48.20            108.38 

1907.11                40.3                59.21 

2150.    Ho  329-     (6.0...  13) 
R.  A.  4"  ism  19'       Decl.  —  o°  23' 

A  and  B 
1909.091              64?o                35-74 
.703              63.5                35.83 

1908.63               48.15            108.45 

The  only  other  measure  of  the  distant  star  is: 
1893.03           48?  13            109"  i  i            2n           Gla 

2128.    O2(App.)49.    (7-0...  7-2) 
R.  A.4hi2m4is        Decl.  +  i  °  29' 

I9II.93I                  I44?70                 I02"9I 

11.942            I44-63            103.07 
12.008            144.58            103.38 

1909.40                63.7                35.78 

As  A  and  B  appear  to  have  a  common  proper  motion,  I  have 
measured  a  third  star. 
Porter      0:138    in     I95?7 

A  and  C  (n.o) 
1909.071            279?4O            198":  i 
.091            279.20            197.82 
.703            279.28            197.41 

1909.29              279.29            197.78 
h  313  is  about  40'  distant  sp  Ho  329. 

I,     ->T>    tnA    T\A/T     (             t°1    £T"7 

1911.96              144-63            103.12 

There  is  no  third  star  for  comparison. 


2134.     ssTauri.    0279.     (7.0... 8. 8) 

R.  A.  4"  13™  3'        Decl.  +  16°  14' 
1908.709  3o8?o  of  27 

The  proper  motion  of  the  binary  system  is  given: 
Auwers         0^107    in     106^4 
Weersma      0.095    m     103.4 

This  belongs  to  Boss'  group  of  Taurus  stars  with  common 
proper  motion. 


1909.785  241 ?7  I72?23 

.838  242.6  172.15 


1909.81 


242.1 


172.19 


2158.    2537-    (8.  i...  1 1. 2) 
R.A.4hi6m2i'        Decl.— 10°  14' 


1908.750 
.824 


342.0 
341-6 
342-1 


i6"43 
16.25 
16.52 


1908.82  341.9  16.40 

The  five  positions  by  'S,  A  and  fJ  (1832-1908)  give  for  the 
proper  motion  of  A: 

o"o4O    in    209^7 


123 


Burnham:   Measures  of  Proper  Motion  Stars 


2160.    2533-    (6.0...  7.  5) 
R.  A.  4"  l6m  37"        Decl.  +  34°  2' 

B  and  C  (10.5) 
1908.671            216?!                 3"oi 
-750           218.4                2.57 

A  and  B 
1908.613              6o?83              I9"S4 
.633              60.45              19-50 

1908.71              217.2                 2.79 
The  only  other  measures  are  given  in  Part  I  of  the  General 

1908.62                60.64              19-52 

A  and  C  (10.8) 
1908.597             I9i°33            I09"66 
.613             191.13             109.59 
.633             191-13             109.89 

2183.     b  Tauri.     11  VI.  101.     (4.  4...  9.0) 
R.  A.  4"  18'"  33'       Decl.  +  17°  38' 

1908.61               191.20            109.71 

No  change  in  AB  since  1831.    The  only  other  measure  of  the 
distant  star  is: 

1907.673            233?2                77?ip 
-675            233.3                76.8i 
.692            233.4                77-23 
•7"            233-3                77-02 

1880.47            189^93            lio''8s           an            Bl 
No  proper  motion  found  for  the  large  star. 

2182.    62  Tauri.    2534.     (6.  2...  8.0) 
R.  A.  4"  i6ra  45"       Decl.  +  24°  i' 
B  and  C  (11.4) 

I9II-7S5            336?33            iio?33 
•  775            336.33            "0.36 
-777            336-27            110.79 

1907.69             233.3               77-o6 

The  proper  motion  seems  to  belong  to  both  stars. 
Auwers         o!'oo6    in     io6?4 
Newcomb     0.112    in     105.5 
Boss              o.no    in     103.1 

2193.    2  538. 
R.  A.  4"  19™  17'       Decl.  +  63°  58' 
About  40'  directly  n  of  2  538  is  the  comet-like  nebula,  II. 

I9II-77             336.31            "0-49 

For  the  proper  motion  of  AB.     The  proper  motion  of  62 
Tauri,  which  is  that  of  the  Struve  companion,  is  given  : 
Auwcrs         o"o2O    in     187^8 
Boss              0.029    in     142.3 

768,  extended  in  no°. 

Dreyer  1569  and  star  9.  5m 
1909.722                i?4                5o"26 
.725               1.6               50.36 
.763               i-i               50-06 

2163.    s(>Persci.    O28r.     (6.0...  8.  8) 
R.A.4hi6-5i'        Decl.  +  33°  41' 

1908.652              36?3                  4:32 
.671              36.8                 4.49 

1909.74                 1.4               50.23 

The  comparison  star  is  DM  (64°)  450.     Eng.  gives  A  Decl. 
52^(1884.17). 
Dreyer  1569  and  star  12.  4m 
1909.722             iio?3                87^5 
.725             109.3                84-8 
.763             108.9               85.9 

.689              38.0                 4.42 
.709              39-1                  4-49 

1909.74              109.5                86.1 

1908.68                37-5                 4-43 

There  is  retrograde  motion  in  angle,  with  no  sensible  change 
in  the  distance. 
The  proper  motion  of  56  Persci  is  : 
Auwers         0^077    in     is8?2 
Boss              0.093    in     152.0 

2166.    Doolittle7.     (9.5...io.o) 

For  the  last  we  have  : 
1884.17           io6?8           85^2           in           Eng. 

2198.    2  547.     (8.  5...  n.  5) 
R.  A.  4"  19"'  48'        Decl.—  i  °  40' 

1906.890             ss!i                 i?82 
.906             57-0                 1.83 
.964             58.1                 1-84 

R.  A.  4"  16™  59'       Decl.  +  33°  36' 

A  and  B 
1908.671            2i2?o               46^71 
.689            2i2?o               46.22 
.750            211.9               46.82 

1906.92               56.7                 1.83 

1908.709             6o?i                 i"o6 
.750             58.6                 1.92 
.824             60.6                 1.79 
.974             61.9                 i.  80 

1908.70                  212.0                    46.58 

1908.81               60.3                 1.87 

124 


Burnham:   Measures  of  Proper  Motion  Stars 


The  proper  motion  of  A  given  in  the  General  Catalogue  from 
the  measures  of  AB  (1831-1902)  will  not  be  sensibly  changed 
by  the  later  positions : 

o"o49    in    3i5?o 

A  and  DM  (—  i°)  641 

1006.890  2S8?4  2Il'.'24 

.906  258.3  211.09 

.964  258.5  211.15 

1906.92  258.4  211. 16 

A  comparison  of  this  position  with  Lament  and  A.  G.  indi- 
cates a  proper  motion  of  o"o6i  in  declination  for  one  of  the 
stars.    The  7.6m  comparison  star  has  a  13  m  companion : 
1906.964  233?!  26"o9 


2201.     2545-     (7-S... 9- 3) 
R.  A.  4"  20™  8s        Decl.  +  17°  56' 


B  and  C  (10.5) 

1908.597  215-38  I49''78 

.613  215.10  150.00 

.633  214.97  149-00 

1908.61  215.15  149.89 

Earlier  measures  of  the  distant  star  are: 

1879.48  2i4?s8  I5°"i7  2n 


Bl. 


1910.895 
-931 
-933 


S7°8 
58-6 
57-4 


18.33 
18.78 


1910.92  57.9  18.58 

Perhaps  a  little  diminution  in  distance.    The  proper  motion 
of  A  is  given: 

Weersma     o"o2i     in    241^7 


2210.     2548.     (6.0... 8.0) 
R.  A.^'ai"1  18'        Decl. +  30"  6' 

A  and  C 
1908.597  i95°23  121^29 


.613 
-633 


195-00 
195-03 


121.14 
121.28 


1908.61  195-09            121.24 

C  and  c  (10.3.. .13.0) 

1908.597  52?3                i6"67 

-633  51.7                16.48 


No  change  in  AB.    The  proper  motion  of  the  large  star  is 
small : 

Auwers         o"oi7    in     122^3 
Boss  0.008    in     128.8 

Newcomb      0.022    in      37.0 


2230.    80  Tauri.    2554.     (6.5-.-9-O) 
R.  A.  4"  23™  17'        Decl.  +  15°  23' 


1908.709 

.824 


41  .2 
36.8 


0.76 


1908.77  39-0 

The  proper  motion  of  80  Tauri  is : 


0.69 


Auwers  0^072    in    93^2 

Newcomb       0.087    m    97-3 
Boss  0.106    in    96.5 


2232.     2  556  rej.     (9-5... 9-5) 
R.  A.  4"  23™  50'        Decl. +  5°  2' 


1906.796 
6.890 
7.022 


289^6 
288.5 
289.7 


4*28 
4.27 
3.96 


1908.61 


52.0 


16.58 


The  other  measures  of  the  distant  star  are : 
1880.50  I94°35  121^55  2n 

1893.02  194-34  121.03  211 

No  proper  motion  found  for  the  large  star. 


Bl 
Gla. 


2220.     i  Camelop.    2550.     (5.1. ..6. 2) 
R.  A.  4"  22m  32'        Decl.  +  53°  39' 

A  and  B 

1908.597  307?o  io"22 

.613  306.5  10.18 

-633  307-5 


1908.61 


307.0 


10. 16 
10.19 


1906.90  289.3  4- '7 

The  only  other  measure  is  on  a  single  night. 

2237.     H  1146.     (8. 2... 10.3) 
R.A.4"24m39'        Decl.  71°  13' 


1907.711 

.791 
.807 


40.7 
38.9 
40.2 


26.05 
25.96 


1907-77  39-9 

No  early  measures  of  this. 


26.11 


2239.     57  Persei.    Sh  44.     (5. 2... 6. 2) 
R.  A.  4"  24™  58'        Decl.  +  42°  48' 

A  and  B 
1908.652  io8?25  ii5"56 


.671 
.673 

1908.67 


198-52 
198.56 

198.44 


115.48 
115-37 

115-47 


125 


Burnham:   Measures  of  Proper  Motion  Stars 


BandC  (12.5) 
1908.671            3I4°83              51:32 
.692            314.13              51.44 

2248.    HVI.64.    (6.0...  9.4) 
R.  A.  4"  26m  27'       Decl.  —  3°  28' 

1911.775             n7°43             I24"S5 
.796             117-47            124.31 
•813             "7-33             124.53 

1908.68              314.48              51.38 

AandC 
1908.671            224?93             103^86 
.692            224.45             103.52 

»                      1911.79              117-41             124.46 

The  only  other  measures  are  my  own  of  late  date,    h  320  is 
2™  /  and  4'  M;  small,  and  a  little  brighter  in  the  center;  no  good 
comparison  star.    I  do  not  find  any  proper  motion  for  the  large 
star  which  is  5.6m  in  SD. 

2269.     2  570.     (7.0...  8.0) 
R.  A.4°29m3i'        Decl.  —  9°  59' 

1908.709            259?8                12^84 
.750            259.6                12.85 
.824            259.3                12.78 

1908.68              224.69            103.69 

A  and  D  (11.2) 
1908.671            353?87             76T4I 
•673            353.85             76.60 
.692            354-23             76.22 

1908.68             353.98             76.41 

These  measures  continued  will  show  the  separate  proper 
motions  of  the  large  stars. 
We  have  for  the  proper  motion  of  the  larger  star: 
Auwers         0*007    ">    221  ?5 
Newcomb     0.014    in      73.3 
Boss              0.007    >n      81.4 

The  motion  of  B  is  given: 
Auwers         oTo7O    in    155^7 
Boss              0.075    in     165.6 

2244.     X  560  rej.     (6.  8...  9.5) 
R.A.4»2S-53'       Decl.  -13°  54' 

1006.796             44°o               29739 
6.890             44.2               29.40 
7.022             43.3               29.46 

1908.76              259.6                12.82 
No  relative  motion  since  1830. 

2277.    2571-    (6.3...  n.  o) 
R.A.4h30m3'        Decl.  -3°  5  1' 

A  and  C  (12.6) 
1909.760            I99?i8              45^81 
.763             199.82              44.78 
.780            199.60              44.76 

1906.90               43.8               29.42 
No  early  measures  of  this. 

2247.    Hd- 

R.  A.  4"  26"  ii-       Decl.  +  i°  2' 

h  318  and  star  n.6  m 
1908.974             6i?i               6of9 
9.706             62.6               61.5 
9-722             62.3               62.0 

1909.77              199-53              45-12 

A  and  D  (12.6) 
1909.760           273?6s             6o"o2 
•763            273.92             59.01 
.780           273.75             59.6i 

1909.77              273.77              59-55 

A  and  SD  (3°)  832 
AR.  A.             A  Decl. 
1891            +  I3?45           +  274"3            A.  G.  Stras. 
1909                13-37                274.4           P 

The  proper  motion  of  the  principal  star   (Bradley  635)   is 
small  : 
Auwers         O?039    in    255?o 
Boss              0.044    in    223.1 

h  320  and  star  13.  om 
1009.760            I95?3              H5"02 
.763             195.5              114.28 
.780            196.3              114-27 

1909.47               62.0               61.5 

This  is  about  Yi°  sp  the  Hd  pair;  and  more  distant  are  two 
other  nebulae. 

h  316  and  h  317 
1008.974             8i?o               59?2 
9-706             79.2               57.9 
9.722             79.3               59.1 

1909.47               79-8               58.7 

A  prior  position  is  : 
1887.08           78?!           57:6           in           Eng. 

1909.77              195.7              "4-53 
This  is  about  30'  nf  2  571. 

126 


From  the  three  P  positions  of  the  faint  star,  each  on  3  n  (1888- 
1911)  the  proper  motion  of  A  is : 

o".io6    in     144^8 

Some  of  the  values  from  the  catalogues  are : 
Auwers  o"ioo  in  I55°.o 
Porter  o.ioo  in  153.2 

Boss  0.112    in     143.2 


2285.     O2  (App.)  53.     (7.0. .  .7.2) 
R.  A.  4"  31™  16"        Decl.  +  o°  20' 


Burnham:   Measures  of  Proper  Motion  Stars 


2279.     2  Camelopardali.    0  1295.     (5.0... 7.0) 
R.  A.  4"  30'"  27'        Decl.  +  53°  14' 

AB  and  D  (13.2) 
1911.720  2i4?9  22''78 


•  775 
.777 

1911.76 


215-5 
215.1 

215.2 


22.77 
22-34 
22.63 


1906.796 
.800 
.906 


172.6 
172.4 


77.71 
78.01 
77.81 


1906.86  172.5 

Without  material  change. 


77.84 


2296.    2575.    (8.8... 9. 8) 
R.  A.  4"  32™  32'        Decl.  — o°  38' 


1911.870 
12.046 
12.066 


159.0 
159.3 
159.3 


5"oo 
4-74 
5- ii 


1911.99 


159.2 


4-95 


No  material  change  since  1831. 

h  321,  which  is  about  30'  distant  up  2  575,  is  in  the  field, 
closely  p  the  8.3m  star,  DM  ( — o°)  730;  too  indefinite  for 
accurate  measures. 


2304.    11346.    (6.i...ii.o) 
R.  A.  4"  33™  49'        Decl.  +  28"  23' 


1911.663 
•  75} 
•775 


54°78 
54.63 

54-57 


43-19 
43-34 
43-32 


I9".73 


54-66 


43.28 


No  apparent  change  in  ten  years.    The  proper  motion  of  A 
is  given: 

Boss         o''o6o    in     134^0 


2312.     2583.     (7- 8... 9-4) 
R.  A.  4"  34m  45"        Decl.  +  o°  44' 

A  and  B 
1907.675  326?7  S''6S 


.692 
•772 


326.2 
325-8 


5-73 
5-66 


1907.71 


326.2 


A  and  C  (9.6) 
1907.675  264^80 

.692  264.97 

.772  264.60 


5-68 


99''56 
99-39 
99-54 


1907.71  264.79  99.50 

No  certain  change.    The  distance  of  C  by  South  is  too  large. 


2313.     T  Tauri.    S4S5-     (5-0... 7-2) 
R.  A.  4"  35m  2s        Decl.  +  22°  44' 


1909.627 
.640 
.666 


2I2?76 

212.55 
213.03 


62':6o 
62.55 
62.55 


1909.64 


212.78 


62.57 


No  relative  change  in  these  stars.  There  is  but  little  doubt 
that  the  principal  star  is  a  close  pair.  A  recent  examination  of 
the  Lick  Observatory  observing  books  shows  that  eleven  years 
before  the  occupation  referred  to,  I  observed  this  star  with 
the  12-inch,  Oct.  n,  1888,  and  entered  it  as  a  close  pair,  but 
it  was  forgotten,  and  apparently  not  looked  at  again.  No 
elongation  was  noticed  at  the  time  of  the  measures  given  here. 

The  proper  motion  of  T  Tauri  is  given : 

Auwers  o"oi6 
Newcomb  0.022 
Boss  0.023 


in  237:0 
in  153-9 
in  165.9 


2315.    H  348.     (6. 3... 10. 6) 
R.A.4h35'"  15"       Decl. +  33°  42' 


1910.950 
11.008 
11.622 


285?3 

285.5 
284.3 


29.82 
30.21 


1911.19 
No  early  measures. 


285.0 


30.  ii 


2322.     A.G.Si.     (9. 5-.. 9-5) 
R.  A.  4"  36™  18'        Decl.  +  6°  16' 


1006.796 
.964 


281  ?8 
282.4 


37"i2 
37-33 


1906.? 


282.1 


37-22 


127 


Burnham:   Measures  of  Proper  Motion  Stars 


2325.    Espin  13.    (7-4...  13) 
R.  A.  4"  36-  48'       Decl.  +  43034' 

1910.760           2i8°2               i6".i6 
10.931            215.8               16.30 
11.775            215.7               15.83 

No  other  measures.    These  stars  arc  SD  (5°)  1020  and  1021. 
h  330  is  about  5'  nf  H  27;  has  no  very  definite  central  con- 
densation. 
h  330  and  SD  (5°)  1024 
1910.678            353?s              191?! 

2357.     2598.     (8.  2...  9.7) 
R.  A.  4"  41"'  37'        Decl.  +  17°  36' 

1907.675            3i6?9                 9?34 
.772            316.9                 9.50 
•845            316.7                 9.31 

1911.15             216.6               16.10 

Disagrees  with  the  former  measures  in  distance.    There  is  a 
still  fainter  companion  14  m  about  the  same  distance  : 
1910.760           348^5               isT84 
"•  775           347-1               16.24 

1911.27             347.8               16.04 

2330.    55  Eridani.    2590.    (6.  2...  6.  7) 
R.  A.  4'  37™  50"       Decl.  —  9°  i' 

1910.895            3i7?4                9*29 
•931            3I7-7                9-31 

1907.76              316.8                 9.38 
No  change  since  1828. 

2358.    H  684.    (9.0...  10.  7) 
R.  A.  4-41'"  51'       Decl.  +  10°  43'    ^ 

A  and  B 
1909.859           263?8               24*07 
09.933            264.2               24.33 
10.678            263.7               24.16 

1910.91             317.5                9.30 
h  329  is  about  15'  distant  »/;  small  and  faint  ;  near  56  Eridani. 

56  Eridani  and  h  329 
1910.895             I09?5              290?  I 
.931             109.8              291.9 

1910.16             263.9               24.19 

A  and  C  (10.2) 
1909.859           2io?6               46:'69 
10.049           211.  2               46.16 
10.678           211.  2               46.54 

1910.91              109.6              291.0 

The  proper  motion  of  55  Eridani  is  given  : 
Auwers         0^024    in    2O5?2 
Boss             0.044    >n    126.2 

2333.    2584.    (7.  5...  10.  2) 
R.  A.  4'  38"  8'       Decl.  +  66°  19' 

1907.578                 I22?2                       I2?00 
.581                  122.0                      11.99 
.638                 I2I.4                      H.96 

I9IO.20                   211.  0                      46.46 

C  and  D  (11.2) 
1009.859           307?8               10745 
09.933            307.5               10.55 
10.678           306.8               10.63 

1910.16             307.4               10.54 

A  and  DM  (10°)  637 

1909.859            239°47              77"74 
09-933            239.36             77.68 
10.678           239.40             77.72 

1907.60                    I2I.9                      ".OS 

Unchanged. 

2339.    A.  G.82.    (9.  4...  9.  6) 
R.  A.  4'  38-  48'       Decl.  +  66°  24' 

1906.813           i2i?6              26^03 
7.581           121.3              26.54 

7.638                121.  2                    26.60 

1910.16             239.41              77-71 

No  other  measures  of  these  stars.    They  make  the  principal 
part  of  h  332;  the  other  stars  small  and  scattered.    For  the 
distant  star  the  meridian  positions  give: 
1875           23g°8           77^9           A.  G.  Lcip. 

2363.    2599.    (8.0...  9.3) 
R.  A.  4"  42™  24'       Decl.  +  44°  46' 

A  and  B 
1907-638           336?!               io?45 
.657           336.1               10.55 
•791            335-6               10.25 

1907.34                  "1-4                    26-39 

No  motion. 

2346.    H27.    (9.4..-  9-5) 
R-  A.  4"  39"  37'       Decl.  -5°  27' 

1910.678              si?o7              3^44 
.701              S'.io              39.59 
•  720              50.83              39.05 

1907.70             335.9               10.42 
No  change  since  2. 

1910.70               51.00              39.36 

128 


Burnham:   Measures  of  Proper  Motion  Stars 


A  and  C  (13.5) 
1907.791  2p?6 

No  other  measures  of  C. 


17-77 


2379.    HVI.83.    (7.0... 8.5) 
R.  A.  4"  48m  50"        Decl.  +  6°  44' 


1912.675 

•755 
.791 


4:20 
4.08 
4.18 


95^58 
95-73 
96.09 


1912.74 


4-15 


95.8o 


Herschel's  distance  of  8o''g7  in  1783  would  seem  to  be  much 

too  large.    The  only  other  measure  is  my  own  in  1900.    Further 

neasures   are   required  to   show  whether  there  is  any  con- 

iiderable   proper   motion.     The   place   given   in   the    General 

Catalogue  from  Herschel  is  in  error;  it  should  be  as  given  here. 


2383.    p  552.    (6. 9...  10. 2) 
R.  A.4h45m4s        Decl. +  13°  27' 

AB  and  C  (13.0) 

1906.796            213?!  44^97 

.006            212.8  44.93 

.964            213.0  45.11 

1906.89  213.0  45-00 

No  sensible  proper  motion  in  the  close  pair. 

2415.     O2oo.     (7.0... 9.0) 

R.  A.  4"  48™  25'        Decl. +8°  24' 

A  and  B 


1909.112 

.128 

344°o 
344-8 

i?90 
1.83 

1909.12 

344-4 

1.86 

A  and  C 

1909.071 

.112 

94°9 
95-1 

38:01 
38.24 

1909.09  95.0  38.12 

C  and  D  (12.2.. .13.0) 

320?5  u".6s 

320.1  11.85 


1909.071 

.112 


1909.09  320.3  11.75 

No  other  measures  of  the  small  stars. 

Closely  preceding  this  is  another  pair  not  previously  seen. 
This  is  DM  (8°)  793;  the  magnitudes  are  8.3  and  13.0. 


1909.071 

.112 
.128 


259°4 
257-3 
260.3 


2'73 
2-59 
2.76 


1909.10  259.0 

The  place  of  this  (1880)  is: 


2.69 


R.A.     4"  46™  43') 
Decl.       +  8°  21'  [ 


2424.    H  2243.    (10.0..  .10.0) 
R.  A.  4"  49m  23'        Decl.  — 5°  2' 


1909.722 

-763 
.780 


M7°6 
148.0 
149.4 


5-48 
5-93 


1909.75 


148-3 


5-70 


No  other  measures.    About  25'  distant  nearly  /  H  2243  is 
h  336". 

h  336  and  SD  (5°)  1096 
1909.722  223?7o  I54''io 

.763  223.58  154-29 

.780  223.37  155-00 


1909.75  223.55 

The  only  earlier  measure  is  : 

1886.97     223?4     I55"i5 


I54-46 


Lv. 


2426.    o"  Orionis.    f5  553.     (5.O...I3-5) 
R.  A.  4"  49'"  37'        Decl.  +  13°  19' 


1912-675 
.717 

-755 


49°8S 
49.66 
49-85 


31-95 
31-58 
31-75 


1912.71 


49-79 


31.76 


The  proper  motion  of  the  principal  star  is : 
Auwers  o"oo7  in  241  ?9 
Boss  .0.102  in  233.3 

From  the  four  {5  measures  of  the  faint  star  on  ten  nights 
(1877-1912)  the  corrected  proper  motion  of  o2  Orionis  is: 
0:097    in    248? 3 


2432.    62  Eridani.    Sh  48.     (5. 6... 9.0) 

R.  A.  4"  50™  30'        Decl.  —  5°  22' 


1909.722 
•763 
•  933 


74-57 
74-58 
74-53 


66:37 
66.46 
66.20 


1909.81 


74-56 


66.34 


The  proper  motion  of  62  Eridani  is  uncertain : 
Auwers         o'JoiS    in    3o6?4 
Boss  o.oio    in    245.9 


2433.     99  Tauri.    P  1045.     (6.1...  12. 3) 
R.  A.  4"  50m  32'        Decl.  +  23°  46' 

A  and  C  (13.0) 

353?oo  I03''20 

353.27  103.84 

352.67  103.62 


1912.755 
•793 
.810 


1912.78 


352.93 


103-55 


129 


Burnham:  Measures  of  Proper  Motion  Stars 


No  other  measures  of  this  star.  The  proper  motion  of  99 
Tauri  is  uncertain : 

Auwers         o"o2i  in    238^4 

Boss  0.026  in    167.6 

The  following  star  (98  Tauri)  was  measured  by  mistake  in 
the  first  instance  for  99  Tauri. 

98  Tauri.     (6.0... 13. 7) 
R.  A.  4"  50™  49*       Ded.  +  24°  53' 

A  and  B 

1912.791     358?o  4i?6i 

•  793     356.8  42.19 

.810     357.7  41-51 


1912.80  357.5  41.77 

A  and  C  (10.3) 
1912.793  289?43  94^46 


.810 


J.03 


94.84 


1912.80 


289.23 


94.65 


The  proper  motion  of  98  Tauri  from  the  star  catalogues  is 
given : 

Auwers  07051  in  163^0 
Newcomb  0.069  >n  152.5 
Boss  0.067  in  153.5 


2435.    o>  Aurigae.    2  616.     (4.0...  7.  9) 
k5im6§       Decl.  +  37°43' 


164^48 
164.96 
164.56 


A  and  C(n.s) 
1912.675  233?22 

•695  233-50 

•7'7  233-58 


1912.69 


233.43 


164.67 


For  the  proper  motion  of  to  Aurigae.  In  most  of  the  star 
catalogues  this  is  designated  as  4  Aurigae  only.  For  the 
motion  we  have: 

Auwers         o'ooxj    in    I78?6 
Boss  0.115    in    154.4 


2442.    2624.    (8. i... 8. 6) 
R.  A.  4' 51"  44'       Decl.  — s°56' 


1906.796 
.906 


88?4 
88.6 
89.2 


28757 
28.44 
28.54 


1906.88 
No  change  since  1831. 


88.7 


28.52 


2446.    2619.    (8. 7... 8. 7) 
R.  A.  4'  52™  5'       Decl.  +  50°  5' 


1907.638  I26?2 
.657  127.2 
.769  124.5 


1907.69 


126.0 


4-47 
4-57 

4-55 


The  four  sets  of  measures  by  2,  A,  A  and  P  (1830-1907)  give 
for  the  apparent  motion  of  B : 

o"o24    in    234?4 

This  proper  motion  is  as  likely  to  be  in  one  component  as 
the  other. 

2450.     II  2244.     (8. 6... 9.0) 
R.  A.  4"  52m  16'       Decl.  +  69°  12' 


1908.939 
9-589 
9.666 


i65?35 
165.77 
165.93 


io6"go 
106.76 
106.92 


1909.40 


165.68 


106.86 


No  early  measures.    These  stars  are  Groombridge  902  and 
903.    The  proper  motions  in  that  catalogue  are : 
A        o"o24    in     178^7 
B       0.016    in    131.8 


2451.    2  618.     (7.0... 7. 3) 
R.  A.  4"  52™  18'       Decl.  +  62°  54' 

The  proper  motions  are  given  by  Porter : 

A        0^317    in     is?3 
B        0.291     in    23.4 

Of  course  the  motions  are  exactly  the  same,  as  there  has 
been  no  change  since  1831. 


1908.939 
9.589 
9.666 


B  and  C 

183^83 
183.88 
184.05 


87^3 
87.02 
87.14 


1909.40 


183.92 


87.06 


There  being  no  relative  motion,  I  have  connected  a  third 
star  II. 2m. 


2456.    2  626  rej.    (8.0...  10.5) 
R.  A.  4"  53m  5'        Decl.  +  10°  13' 


1910.666 
.678 
.720 


241?! 
241.5 
241-3 


24.12 
23.87 


1910.69  241.3 

No  early  measures  for  comparison. 


24-13 


2480.     ii  Camclof.    2  13,  App.  I.     (5.0... 6.0) 
R.  A.  4"  55™  43'       Decl.  +  58°  48' 

B  and  C 
1908.920  i8?6s  I73"58 


•939 

-''71 

1008.04 


18.18 


18.42 


174.02 
173.84 
173.81 


130 


Burnham:   Measures  of  Proper  Motion  Stars 


C  and  D  (10.4..  .12.9) 
1908.939               8?8                i&'.22 
.974                9-3                16.09 

2556.    H  3268.    (10.6...  10.  9) 
R.  A.  5"  3™  46"        Decl.  +  16°  22' 

1910.627            267?6                 9"74 
.678            265.0                 9.88 
.780            266.8                 9.67 

1908.96                 9.0                16.15 

The  prior  measures  are  : 
1879.16            i8°6o           I73''43            m            Bl. 
1879-71            17-95            172.59           m            Bl. 

B  is  12  Camelopardali.    There  is  little  or  no  relative  change 
since  1836  and,  therefore,  the  proper  motions  are  really  the 
same. 
For  A  we  have  : 

Auwers         o"ois    in    2is?S 
Boss              0.007    in     108.4 
For  B: 
Auwers         o"oi2    in     I94?5 
Boss              0.039    m     166.2 

2495.    9  Aurigae.    P  1046.     (S.5---I2-7) 
R.  A.  4"  S7ra  17'        Decl.  +  51°  26' 

A  and  C  (9.1) 
1908.939              6o?6s              89"8o 
8.974              61.13              89.89 
9.071              61.23              89.79 

1910.69              266.5                  9.76 

The  components  of  H  3268  form  a  part  of  h  348;  mostly 
small  stars.    No  other  measures. 

2558.     ^  629.     (8.  2...  ii.  2) 
R.A.s''4m4'        Decl.  +  83°  18' 

1907.807                6?7                15^70 
8.636                7.8                16.01 
8.652                6.7                15.74 

1908.36                  7.1                15.82 

The   proper   motion   of   the   principal    star    from   the   five 
positions  by  2,  A,  O2,  A  and  (5  (1832-1908)  is  : 
Measures             0^087    in    241^0 
Greenwich           0.054    in    243.4 

2568.     H  3269.     (9.  2...  11.  2) 
R.  A.  5"  5™  4'        Decl.  +  16°  36' 

1910.678              62?o                I9"82 
.780              61.2                19.75 

1908.99               61.00             89.83 

C  and  D  (13) 
1908.974            I25?8                47"6g 
9.071             124.8                47.65 

1910.73                61.6                19.78 

Closely  following  H  3269  is  h  349,  with  several  small  pairs, 
one  of  which  was  measured  for  H  3269: 
1910.627           72^8           23^47            ii.  o...  11.  i 

The  principal  star  of  H  3269  is  DM  (16°)  721. 
On  the  night  of  Nov.  18,  1909,  comet  Halley  passed  through 
h  349- 

2579.    H  2253.    (8.  3...  12.  8) 
R.  A.  5"  6m  37"        Decl.  +  51°  49' 

A  and  B 
1908.766             23?8               26"  10 
.769             23.4               26.30 
.788             25.0               26.28 

1909.02              125.3                47.67 

C  is  DM  (51°)  1026.    As  this  appears  to  be  moving  with  AB, 
I  have  connected  a  fourth  star. 
The  proper  motion  of  A  is  : 

Auwers               o"i6g    in    ioo?5 
A.  G.  Harv.        0.146    in     192.9 
Boss                     0.178    in     184.9 
Porter                 0.171     in     192.3 

2515.    H  3265.     (9.  6...  9.  6) 
R.  A.  4"  59™  55'        Decl.  +  36°  54' 

1910.739            136^5                15^12 
.760            136.3                15-04 
.780            136.9                15-16 

1908.77               24.1               26.23 

A  and  C  (9.6) 
1908.766             io?9               51:87 
.769             10.6               52.00 
.788             10.5               52.25 

1910.76              136.6                15.11 

The  components  of  H  3265  are  among  the  brighter  stars  of 
h  344.   The  only  DM  stars  are  (36°)  1010  and  1012,  respectively 
9.2  and  9.0  m.    There  is  a  12.5  m  star  from  A,  22?8:is"5. 
There  are  other  pairs  in  the  group,  one  of  which  was  measured 
by  mistake  for  H  3265  : 
1910.780              62?9               8"52 

1908.77               10.7               52.04 

The  principal  star  is  given  a  small  proper  motion  : 
A.  G.  Alb.         0^059    in    90° 

131 


Burnham:   Measures  of  Proper  Motion  Stars 


2591.    14  Aurigae.    2653.     (S.O...II.Q) 
R-  A.  5"  7™  36'       Decl.  +  32°  33' 

A  and  B 
1908.766           3S2?7               11*19 
•  769           3S2.7               10.98 
•  788           353-8               11.  10 

2605.     P  Orionis. 
R.A.5"8ra47<        Decl.  —  8°  20' 

A  and  D  (13.5) 
1912.755                o?07              44^7 
.810                0.40              44.67 

.813                       1.02                    44.71 

1908.77             353-1               11-09 

A  and  C  (7.  2) 
1908.766           225?2               14*42 
.769           224.4               14-50 
.788           224.5               14-67 

1912.79                        0-50                   44.72 

From  the  p"  measures  of  the  faint  star  on  ten  nights  (1878- 
1912)  we  have  for  the  proper  motion  of  |3  Orionis: 

o"o22    in     IO3?9 

1908.77             224.7               14-53 

A  and  D  (10.3) 
1908.747            320?97             184714 
.766            320.78            183.97 
.769            320.53             183.73 

changed,  but  the  small  star  is  not  easy  to  measure,  and  the 
motion  is  small,  and  therefore  the  measures  should  be  con- 
tinued.   The  results  from  meridian  observations  are  singularly 
discordant  in  amount  as  well  as  direction: 

Auwers                              o!'oi8    in    293?2 
Newcomb   (F.  C.)            o.ooi     in      97.7 

1908.76              320.76            183.95 

The  only  prior  observation  of  the  distant  star  is  : 
1880.50           320?43            184*52           2n            Bl. 

According  to  Auwers  the  proper  motion  of  the  large  star  is 
nearly  all  in  Decl.;  while  the  measures  of  AB  and  AD  agree 
in   placing   it   principally   in   RA.     A   continuation   of   these 
positions  should  give  the  real  motion,  which  is  certainly  much 
larger  than  the  meridian  value. 

Measures  of  AB       0*040    in    291^6 

Newcomb    (Stand.)         0.007    in    213.3 
Boss                                    0.002    in     124.0 

2606.    2667.    (7-5...  9.0) 
R.  A.  5"  8m  52'        Decl.  —  7°  13' 

1908.750            3i4?5                  4?04 
11.088            315.0                 4.17 

Measures  of  AD        0.042    in    258.5 
Auwers                       0.014    in    334.1 
Boss                            0.015    in    305.4 

2597.    a  Aurigae.    HVI-3O 
R.  A.  5"  7™  49'       Decl.  +  45°  53' 
A  and  F  (10.0) 

I9II-793             I44°43             I45"76 
.813            144-57            145  80 

1909.  gj              314.7                  4.10 
No  change. 

2627.    X  Aurigae.    2  3,  App.  II.    (4.  8...  13.5) 
R.  A.  5"  10™  42'       Decl.  +  39°  59' 

A  and  D  (8.  7) 

1908.709               5°45            138*42 
.7"               5-6o            138.35 
.728               5.23            138-17 

.832            144.37            145.98 
.835            144.10            146.03 
.870            I44-38            145.64 

1908.72                 5.43            138.31 
A  and  C  (12.2) 

1911.83             144.37            145-84 

1908.769            236.5                34-!7 
.824            235.1                33.93 

This  position  when  compared  with  that  of  O2  from  measures 
on  27  n  (1854-1911)  should  give  the  proper  motion  of  the  bright 
star  with  the  highest  degree  of  accuracy. 

0*414    in    i6s?6 

This  will  be  confirmed  later  when  the  nearer  and  fainter  stars 
are  sufficiently  measured. 

Auwers         0*435    in     I7O?3 
Newcomb     0.438    in     168.0 
Boss              0.437    in     168.7 

1908.80              235.8               34.05 

My  three  sets  of  measures  of  the  small  star  C  (1879-1008) 
give,  as  they  should  do,  practically  the  same  value  of  the 
proper  motion  of  the  bright  star  as  that  given  by  the  measures 
of  AD: 

Measures  of  AC        0*852    in     140^8 
Measures  of  AD       0.856    in    140.6 
Auwers                       0.833    'n     I4I  -9 
Newcomb                    0.845    'n     141.0 
Boss                            0.843    in     141.1 

132 


Burnham:   Measures  of  Proper  Motion  Stars 


2634.    2678.    (8.  3...  8.8) 
R.  A.  5"  iim  17'        Decl.  +  4°  33' 

A  and  B 
1908.709              97°2                 3?45 
.884              99.2                 3.35 

Another  set  of   measures  a  few  years  hence  will  settle  the 
matter.    There  is  a  third  14.  5m  star  about  the  same  distance 
from  A  ;  BC  =  99^4  :  14". 

2680.    2691.    (8.  5...  9.0) 
R.  A.  5"i5m2r        Decl.  +  31°  3' 

1908.747            300?2                25*66 
.750            299.8                25.56 
.766            300.0                25.47 

1908.80                98.2                  3.40 

A  and  C  (n.o) 
1908.709            338?8s              7s:'S9 
•884            338.40              75.63 
.898            338.63              75-14 

1908.75              300.0                25.56 
No  other  measures  since  1866. 

2690.     a  Aurigae.    0  888.     (6.0.  ..12.0) 
R.  A.  5"  i6ra  30'        Decl.  +  37°  16' 

A  and  B 
1908.750            i6s?5                  8"59 
•  769            165.7                  8.59 
.974            166.8                 8.46 

1908.83              338.63              75.45 
No  change  in  the  1  1  m  star  since  1893. 

2654.     A  53-     (8.5...  12.  5) 
R.  A.  5"  13™  6'        Decl.  —  3°  12' 

A  and  B 

1906.796              46?5                  4"30 
.906              48.2                 4.87 
•  928              45-9                  4-43 
.964              46.4                 4.61 

1908.83              166.0                8.55 

The  small  star  appears  to  be  moving  with  the  other,  if  there 
is  any  proper  motion.    The  meridian  positions  prove  nothing. 
Auwers         0^027    in    272?2 
Boss              0.027    in     182.5 

2699.     26g8.     (6.2...  7.  7) 
R.  A.  5"  17™  14'        Decl.  +  34°  45' 

1908.766            346^9                3  i  "22 
.824            346.4                31-09 
.843            346.9                31.08 

1906.90                46.8                 4.55 

A  and  C  (10.1) 
1906.928            i82?4              I96':6i 
.964            182.4              196.80 

1906.95              182.4              196.70 

Common  proper  motion  in  AB. 
Kustner      o"6oo    in    77?5 

Distant  star  for  an  independent  value. 

2658.     2684.     (8.0...  9.  8) 
R.  A.  5"  I3m  24'        Decl.  +  44°  58' 

1907.657            I39?6                  i?4i 
7-791             137.2                  1.62 
8.214            140.4                  1-37 

1908.81              346.7                31.13 
Not  fully  measured  since  1866. 

2704.     2699.     (7.  3...  8.0) 
R.  A.  5"  I7m  26'       Decl.  +  37°  56' 

1908.788           343?7                 8':6s 
8.845            344-5                  8.72 
9.109            344.0                 8.85 

1907.89              139.1                  1.47 

No  motion. 

2660.    See  50.    (5.0...  12.  8) 
R.  A.  5"  13™  30'       Decl.  —  18°  16' 

1907.022                 220°0                      3I?32 

8.159           221.6               31.77 
8.750           221.7               32.16 

1908.91              344.1                  8.74 
Probably  unchanged. 

2727.    8483-    (7.0.  ..8.6) 
R.  A.  5"  20™  9'        Decl.  +  33°  41' 

A  and  B 
1907.848              50^82              o6"o2 
8.025              50.38              06.  01 
8.044              50.50              95.96 

1007.98                  221.  1                     31.75 

Unfortunately  the  original  position  of  1897  depends  upon  a 
single  night,  and  therefore  cannot  be  safely  used  with  regard 
to  relative  motion.    If  this  measure  is  correct,  the  large  star 
has  a  proper  motion  of  i"i6i  in  io6?7,  which  is  more  than  three 
times  the  movement  from  meridian  positions  of  o"356  in  90°. 

1907.97                50.57              96.00 

133 


Burnham:   Measures  of  Proper  Motion  Stars 


A  and  C  (10.5) 

1907.848     340?92  103^48 

8.025     340.77  103.23 

8.044     340.87  103.49 

1907.97      340.85  103.40 

A  and  D  (10.5) 

1907.848     318^63  io8?42 

8.025     3i8.77  108.33 

8.044     3i9-io  108.93 


1907.97 


318.83 


B  and  b  (i3-5) 
1907.848     349°8 


108.56 


iSl'68 


The  proper  motion  of  A,  derived  from  the  several  measures 
of  B,  C,  and  D,  is  as  follows : 

AB        R.  A.  —  o"os  i        Decl.  —  o"  194 
AC  0.033  0.207 

AD  0.057  0.204 


—  0.047 


—  0.2O2 


Therefore  the  corrected  movement  of  the  principal  star  is : 
07207    in    193?! 

From  the  star  catalogues: 

Stumpe         07192  in  204^2 

Porter          0.171  in  180.0 

Kustner        0.182  in  187.9 


2729.    115  Tauri.    02107.    (6.0. ..10.8) 
R.  A.  5"  20™  10'       Decl. +  17°  51' 


1908.769 
9.109 


A  and  B 
306?  i 
307-1 


10.09 


1908.94 


306.6 


A  and  C  (12.5) 

1908.769  339°4 

9.109  342.1 


10. oo 


9755 
9-73 


1908.94 


340.7 


9.64 


The  proper  motion  of  A  is  doubtful: 

Boss  o7oi6    in     148^5 

Auwers         0.016    in    259.2 


2732.    H  699.     (10.8... 11.2) 
R.A.s»20"2i' 


1911.720 
•  736 


215-4 
215-7 


978 1 
9.72 


2IS-5 


9.76 


No  other  measures.    H  699  is  in  the  field  with,  and  closely 
following,  h  354. 


2738.    2704.    (7. 2... 9. 5) 
R.  A.  5"  20™  48'        Decl.  +  69°  34' 

1912.638 

.675 
.678 


15-3 

14.8 
15-0 


20:29 
20.38 
20.25 


1912.66 


15.0 


20.31 


No  proper  motion  found  for  the  principal  star  in  the  several 
catalogues  examined.  This  Is  given  from  the  measures  of  the 
small  star  with  a  high  degree  of  accuracy.  The  four  sets  of 
measures  by  2,  A  and  0  on  13  n  (1831-1912)  give  for  this 
motion : 

07084    in    348?2 


2745.     2711.     (7. 5... 9. 2) 
R.  A.  5"  2im  38'        Decl.  +  54°  35' 

B  and  C 
1908.613  245?so  ioo:'73 


.636 
.671 


245.43 
245.40 


100.66 
100.50 


1908.64 


245-44 


190.63 


C  and  D  (10.0.. .13.1) 

1908.636  305?6  15748 

.671  309.9  15.37 

.689  307.6  15.38 

-750  306.8  15.19 


1908.69 


307.5 


15-35 


The  large  common  proper  motion  of  A  and  B  is  well  known. 
Of  the  other  stars  the  only  prior  measure  is : 

1881.46     243?oo     197708    2n     Bl. 

The  two  positions  give  for  the  annual  motion  of  AB : 
07386    in     192^3 

Further  measures  are  needed  before  this  can  be  substitute 
for  the  meridian  value. 
Some  of  the  prior  values  are : 

Porter          0*434    >n    200^9 
Kustner        0.425    in     198.3 

The  small  star  C  is  an  exceedingly  difficult  and  close  pair. 
On  only  one  night  could  it  be  seen  well  enough  to  properly 
measure. 

C  and  c  (10.5.. .10.7) 
1908.750  I73°6  o:'59 


2751.     118  Tauri.    2716.     (5.8... 6.6) 

R.  A.  5"  2  im  53"       Decl. +  25°  3' 

A  and  C  (12.0) 


1912.675 
.695 
.717 


99-15 
99.06 


141.90 
141.47 
140.51 


1912.69 


98.82 


141.29 


134 


Burnham:   Measures  of  Proper  Motion  Stars 


Very  little  change  in  the  large  stars.    For  the  proper  motion 
of  A  we  have  : 

Auwers         0*019    in     163^2 
Boss               0.040    in     149.1 

2830.     2745.     (8.  5...  8.  7) 
R.  A.  5"  28™  57'        Decl.  —  6°  5' 

A  and  B 
1912.810            346?8                28"73 
•  813            345-7                28.75 
.867            346.7                28.56 

2764.    H  701.    (7.  2...  10.  9) 
R.  A.  5"  22"'  50"        Decl.  +  31°  25' 
1912.675             136^52              35"o2 

1912.83              346.4                28.68 

A  and  C  (9.0) 
1912.810           288?93             78"o6 
.813            289.22              77.69 
.867            289.13              77-79 

.717            136.83              35-52 

1912.83              289.09              77.85 

1912.69              136.72              35.12 

The  only  other  measure  is  that  given  in  Part  II  of  the  General 
Catalogue. 

2770.    2718.    (7.2...  7.2) 

No  change  in  AB  since  1831.    C  is  SD  (6°)  1230;  no  other 
measures. 

2846.    H  3276.    (10.5...  10.  7) 
R.  A.5h29ra4i'       Decl.  +  16°  59' 

1909.859             65  °6               26".  17 
09-933             65.6               26.61 
10.128             65.3               26.19 

A  and  B 

1910.605             74°o                7"58 
.608             74.0                7.62 
.627             72.6                 7-6o 

1909.97               65.5               26.32 

About  this  time  (1909.85)  the  Halley  comet  passed  very  near. 
There  is  a  large  error  in  the  measures  of  distance  in  1904. 

1910.61               73.5                 7-6o 
No  sensible  change  in  AB. 

A  and  C  (9.6) 
1910.605             i8s?2i             ii8"87 

2853.     Weisse  9.     (8.  5...  9.  8) 
R.  A.  5"  30m  39'        Decl.  —  13°  54' 

1906.006             isi?9                44^50 
.964            151.8                44.28 

.608            185.07             118.47 
.627            185.15             119.08 

1906.93              151.8                44.39 

1910.61              185.14            118.81 

The  only  other  position  of  C  is  : 
1881.47            184^56            H9?98           2n            Bl. 

These  measures  imply  a  proper  motion  of  A: 
o"oss    in     141  ?s 

If  these  positions  have  the  usual  accuracy,  the  motion  from 
meridian  observations  is  erroneous  : 

2871.    2755.    (8.  3...  9.0) 
R.A.sh3im52'        Decl.  +  23°  13' 

A  and  B 
1907.731            316?!                  6"27 
.769            3i6.5                  6.15 
.772            314.7                  6.02 

Groombridge      o!'o42    in    224?4 
2809.    Espin  63.     (8.  4.  ..ii.  8) 

1907.76              3IS-8                 6.15 
No  change  in  these  stars. 

A  and  C 
1907.769              33?os             I46?44 
•772              33-13             146.51 

R.  A.  5b27m  15'        Decl.  +  41°  13' 

I9°7  -731             I72°9                 8"o2 
.769            173.9                8.10 
.791            171.6                8.09 

1907.77                33-09            146.47 

C  and  D  (8.0.  ..10.5) 
1907.769            176?  12              79^6 
.772            175-80              78.97 

1907.76              172.8                8.07 

1907.77              175-96              79.i6 

135 


Burnham:   Measures  of  Proper  Motion  Stars 


The  only  prior  measures  of  the  distant  stars  are : 
AC       1879.85         34?3        M6"oi        an 
CD        1879.85        175.5          79-H        an 


2888.    H  2274 
R-  A.  5'  33m  S3'       Decl.  +  55°  44' 

This  could  not  be  identified  with  absolute  certainty.  There 
is  no  lack  of  small  pairs,  but  none  fully  answering  the  descrip- 
tion. H  2274  should  be  in,  or  closely  preceding,  h  364. 


2901.    2771-    (9.0... 9.2) 
R.  A.  5"  34™  42'       Decl.  +  19°  29' 


1911.947 
12.046 


234-60 


24-03 
23.88 


1912.00 


234-75 


23-9S 


One  of  these  nearly  equal  stars  has  a  small  proper  motion. 
The  apparent  movement  of  A  from  the  measures  (1829-1912) 
is: 

07030    in    240^8 

To  show  whether  or  not  there  is  any  motion  in  B,  I  have 
connected  a  13  m  star : 

B  and  C 


1911.947 
12.046 


209?54 
209.45 


100*43 
100.49 


1912.00 


209.50 


100.46 


2907.    S  773 

R.  A.  5"  34m  55"       Decl.  +  33°  19' 

A  and  B  (Doolittle) 
1910.627  254?8  I9"84 

.931  256.0 


1910.78 


255-4 


A  and  CCS  773) 
1910.627  2i8?5 

.720  217.4 

.931  219.1 


20.00 


19.92 


27.17 
26.70 


1910.76 
No  change  in  AC. 


218.3 


26.99 


2912.    Kr  27.    (8.6...io.o) 
R.  A.  5'  35"  381        Decl.  +  56°  45' 

1907.657 
•  731 
•791 


330.5 
328.5 


2709 
2.26 
2.13 


1007.73 
No  change  since  1890. 


328.9 


2.16 


2915.    2769.    (8.0...  10.  2) 

R.A.51'35m458        De 

A  and  C  (10.8) 


1909.840 
.859 
.936 


96.17 
95.82 


137.13 
136.54 


1909.88  95.96  136.90 

The  other  position  is  : 

1880.60     95?57     136^04     3n 

The  proper  motion  of  A  is  very  doubtful. 
A.  G.  Harv.      o"o69    in    360° 


2923.    2  782.    (7. 8... 8.3) 
R.  A.  5*  36™  47'       Decl.  — o°  2' 

A  and  C  (n.i) 

1909.859  i64?i4  131^37 

10.109  164.45  131.96 


Bl. 


10. 128 


164.50 


I3L74 


1910.03 


164.36 


131-69 


Observed  for  proper  motion  of  A;  no  other  measures, 
of  the  Struve  stars  has  a  motion  of  about  o7o6. 


2924.    2779.     (8.o...io.o) 
R.  A.  5"  36™  48'       Decl. +  27°  41' 

A  and  C  (11.7) 

I9IL947              35°77  5i"95 

11-950             35-70  52-35 

12.046 35-20 51-97 

I9".98  35-56  52-09 

For  the  proper  motion  of  A;  no  other  measures. 
Battermann       0^033    in    3O7?o 


2936.    O2  115.    (7. i. -.7- 9) 

R-  A.  5"  37™  40'        Decl. +  15°  i' 

AB  and  C  (n.o) 


One 


I9i i. 775 
.813 
.835 


256.60 
256.70 


92.82 
92.87 


1911.80 


256.56 


yj.S-S 


As  the  early  positions  of  the  faint  star  depend  upon  a 
night,  the  deduced  motion  of  AB  might  be  subject  to 
error.  Later  measures  will  correct  this. 

The  proper  motion  of  AB  is  given: 

Porter       0*035    in     135:4 


single 
some 


136 


2941.    2  785 

R.  A.  5"  38m  29'        Decl. +  25°  52' 

The  pair  measured  here  is  the  one  in  the  field  with  2  785 
observed  by  Tarrant. 

A  and  B  (10.0.. .11.7) 
1911.644  250?6  6".  1 7 

.720  252.3  5.86 

•  755  253.3 


Burnham:   Measures  of  Proper  Motion  Stars 


6. 20 


1911.71  252.1  6.08 

The  only  other  measure  is  that  given  in  the  General  Cata- 
logue. 

A  and  2  785  (A) 
1911.644  i89?83  201*40 


2943.     2  789  re/.     (7.0...IO.O) 
R.  A.  5"  38m  42"  '     Decl.  +  3°  57' 


This  is  in  h  368  (=M78).  No  change  in  AC  since  1879. 
The  following,  not  given  in  the  General  Catalogue,  is  derived 
from  A  R.  A.  and  Decl. : 

1891.20  203?2  51*36  m  Eng. 


2968.     i  Aurigae.    P  192.     (5.0... 12.0) 
R.  A.  5"  40'"  52'        Decl. +  39°  8' 

A  and  B 
1910.777  352°35 


1911.947 
12.008 
12.046 


149-3 
149-3 
149 -5 


I7.SO 
17.04 


1912.00  149-4  17-33 

The  only  other  measures  are  of  recent  date. 

2945.    2787.    (8. i... 8.5) 

R.  A.  5"  38m  50"        Decl. +  21°  16' 

A  and  C  (13) 


1910.933 
10.971 
11.720 


41.1 

39-4 


12.72 
12.88 
12.66 


1911.21  39.6 

No  other  measures  of  this  companion. 


12.75 


2959. 


29  Camelopardali.    H  IV.  25.     (6.  7...  9.  7) 
R.  A.  5"  40™  19'        Decl.  +  56°  53' 


1911.622 
.625 
.644 


131-2 
130.8 


25.14 
24.86 
25.00 


1911.63  130.8  25.00 

The  only  other  measures  are  of  late  date.  The  proper  motion 
is  small  and  uncertain.  The  measures  of  the  small  star  should 
be  continued. 

Auwers         o"o27    in    244?o 

Boss  0.007    in    145-7 


2964.     P559-     (9  5... ii. 5) 
R.  A.  5"  40™  36"        Decl.  +  o°  2' 

A  and  C  (9.0) 

1909.782     20i?95  50759 

09.859     202.40  50.31 

10.109     201.59  50.56 


1909.92 


201.98 


50.49 


.893 
•931 


352.21 
352.63 


39"38 
39.o8 
39.56 


1910.87  352.40  39-34 

A  and  C  (12.0) 

1910.720      34? 10      48"53 
•  777      33-52      48.21 

.835 34-01 48.82 

1910.78  33-88  48.52 

From  the  measures  of  the  two  companions  (1877-1910)  we 
have  for  the  proper  motion  of  the  large  star : 

AB        R.  A.  —  0*046        Decl.  —  0*019 
AC  —0.036  —0.004 

Hence  the  proper  motion  of  T  Aurigae  is : 

0*042    in    254?3 
From  meridian  observations : 

Auwers         0*043    in    239?4 

Boss  0.036    in    223.2 


2969.     133  Tauri.    H  3279.     (5. 4...  12. 4) 
R.  A.  5"  40™  54"        Decl.  +  13°  51' 

A  andB 
1911.775  297?5  17*69 


.813 
.835 


297-8 
297.8 


17.85 
17.84 


1911.81              297.7  17.79 

A  and  C  (12.2) 

1911.775             182?!  24*87 

.813             183.1  24.80 

.835             182.0  24.96 


1911.81 


182.4 


24.88 


The  proper  motion  of  133  Tauri  is  too  small  to  be  detected, 
even  with  the  micrometer,  in  the  time  involved.  The  meridian 
results  are  still  more  uncertain. 

Auwers         0*002    in     I24?5 
Boss  0.022    in     126.6 


2974.    (3  561.    (7.0... 13) 
R.  A.  5"  4im  i8s        Decl.  +  12"  22' 


1909.744 
.818 

.859 


3.0 
1.8 
2.8 


19.12 
19.07 


1909.81  2.5 

Very  little  change,  if  any,  since  1878. 


19.08 


137 


Burnham:   Measures  of  Proper  Motion  Stars 


2978.    2791-    (8.7... 9.3) 
R.  A.  s"  41"  42'       Decl.  +  39°  32' 

A  and  C  (10.1) 

1909.782            2I3?52  60^72 

.818            213.44  60.35 

•  933  213-06 60.47 

1909-84  213-34  60.51 

Evidently  the  2  star  has  no  sensible  proper  motion. 
1880.54  2i2?63  60*74  2n  Bl. 


2981.    8500.    (8. 5... 8. 5) 
R.  A.  5' 41™  53'       Decl. +  32°  56' 


1911.947 
11.950 

12. Oil 


89.70 
89.42 


59"76 
59-91 
59-88 


1911.97 


89.61 


59-85 


2996.     v  Aurigae.    H  V.  90.     (4. 2... 9. 5) 
R.  A.  5"  43™  10'        Decl. +  39°  7' 


1910.971 
11.088 
i i . 104 


206.27 
205.70 


54"58 
54-72 
54-49 


1911.05 


206.10 


54-6o 


No  certain  relative  change.    The  brilliant  cluster,  h  369,  is 
!4™  /  and  25'  s. 


2984.    2796.    (6.9... 8.0) 
.R.  A.  5" 42™  7'       Decl. +  31° 45' 

A  and  C  (10.7) 

1909.818     324^50  207*50 

•935     324-35  207.50 

•953     324-42  207.61 


Bl. 


Compared  with  my  measure  of  1878,  the  proper  motion  of  the 
large  star  is : 

0*020    in    291 ?9 

The  annual  change  from  transit  positions  is  uncertain : 
Auwers         0*030    in    3O4?8 
Boss  0.007    in    322.2 

Newcomb     0.013    in    353.4 


3000.    H  7i2.    (9.3-.. 9-7) 
R.  A.  5"  43™  21'       Decl. +  6°  3' 

The  following  component  is  obviously  the  smallest. 
1906.706  82?5  8"86 


1509.90 

324-42 

207.54 

No  motion. 

1880.51           324^2 

•4           207*48 

2n 

2990.    2794.    (8.5...  10.2) 

R.  A.  5"  42™  39'        Decl.  +  48°  42' 

B  and  C  (12.0) 


1009.782 
.818 

309?27 
309.53 

35"6i 
35.29 

•933 

309-I3 

.15.10 

1909.84 

309.31 

35.36 

Probably  unchanged. 
1880.60  309^85 


36*14 


3n 


Bl. 


A  and  DM  (48°)  1313 

1909.818  259?I3            116*95 

•  933  259.04            "7.25 

1909.88  259.08            117.10 

From  meridian  observations: 

1875  258^3  119*0  A.G.Bonn. 


7.022 


83.2 


8.80 


1906.91 


82.8 


8.83 


3006.    2  802.    (7. 9... 8. 5) 
R.  A.  5"  44™  6*        Decl. +  40°  7' 

A  and  C  (9.8) 

191*70 
191.64 


1909.782 
.818 
•936 


57-50 
57.50 
57-32 


I9L57 


1909-85  57-44  191-64 

No  change  in  AB.    C  is  DM  (40°)  1438. 
1880.53  58°3i  192*10  2n 

3023.    O2  120  rej.    (6. 7... 7. 8) 
R.  A.  5"  45™  52'       Decl.  +  53°  26' 


Bl, 


1907.657 
.711 
•  731 


136.27 
136.55 


44"97 
44.91 
45-04 


1907.70 


136.31 


44-97 


The  distance  is  increasing. 

No  proper  motion  found  in  the  catalogues  examined. 


3029.    P  95-    (8.0...  12.0) 
R.A.51146ni9'        Decl.  — 7°  20' 


I9II-775 
.832 
•942 


297°2 

296.7 
295.6 


14*02 
13.95 
13.73 


1911-85 


296.5 


13.90 


No  material  change.    About  12'  j  is  h  370;  small,  and  without 
any  definite  nucleus  for  measurement. 


138 


Burnham:   Measures  of  Proper  Motion  Stars 


3037.    S  502.    (7.  4--  -7-8) 
R.  A.  5"  47m  56'        Decl.  +  13°  50' 

1909.744            I30?70              46"iS 
.818            130.53              4S-Q6 
.821             130.33              45.64 
.838            130.70              45-37 

The  measure  of  1783  is  obviously  largely  in  error.    The  three 
positions  by  (?  (1879-1911)  give  for  the  proper  motion  of  the 
bright  star  : 
0^062    in    289^2 

It  is  not  probable  that  the  faint  star,  B,  has  any  sensible 
movement.    There  is  no  other  star  near  it. 

Auwers         o"o6o    in    263^3 
Newcomb      0.040    in     261.3 
Boss              0.047    in    263.9 

3073.     f»  1055.     (6.6...  II.  5) 
R.  A.  5"  5im  32'       Decl.  +  44°  35' 
A  and  C  (9.2) 

1911.931             329°03              33'-29 
11.950            328.68              33.31 
12.008            329.20              33-01 

1909.81              130.56              45-78 
Certainly  fixed. 

3039.    2815.    (8.  2...  10.  4) 
R.  A.  5"  48™  I21        Decl.  +  5°  19' 

A  and  C  (ii.o) 
1908.843            307?47              87':8o 
.884            306.75              88.26 
.898            307.43              87.50 

1908.87              307.22              87.85 

No  measures  since  1864.    Some  change  in  distance  is  implied, 
but  the  early  measure  is  on  a  single  night. 

3047.    2  816.    (6.  2...  8.  7) 
R.  A.5h48m3o'        Decl.  +  5°  50' 

1906.796            289^8                 4?'so 
7.022            290.9                 4.30 
7.120            291.1                  4.31 

1911.96              328.97              33.20 

The  distant  Herschel  companion  appears  to  have  the  same 
proper  motion  as  the  large  star.    The  values  of  this  movement 
from  meridian  observation  are  : 

Auwers         o"os8    in    222^6 
Boss              0.051     in    214.5 
Kustner        0.057    in    238.6 

3074.    6  Aurigae.    O2  545-     (3-O-.-7-5) 
R.  A.  5"  51™  32'       Decl.  +  37°  12' 

A  and  C  (10.5) 
1910.971            295?io              47"6o 
11.  088            295.13              47-22 
11.104            295.00              47.66 

1906.98              290.6                 4.37 
No  change  since  Struve. 

3048.    a  Orionis. 
R.A.5"48m4o'        Decl.  +  7°  23' 

A  and  D  (13.5) 
1911.947           346?97             76"24 
12.046            346-20              75.97 
12.162            346.80              75.84 

1911.05              295.08              47.49 

A  and  D  (9.5) 
1910.971            349-97             I29l'82 
11.  088            349-75             128.81 
11.104            349-70            129.83 

1912.05              346.66              76.02 

From  four  positions  on  iin  by  0  and  Doo  (1877-1912),  the 
proper  motion  of  a  Orionis  is  : 
o':o68    in    39?3 

A  continuation  of  the  measures  of  this  and  two  nearer  faint 
companions  will  confirm  this  value. 
From  meridian  observations  we  have  : 
Auwers           0^023    in    27^5 
Newcomb       0.022    in    72.1 
Boss                0.029    in    74.2 

3064.     P  Aurigae.    HVI.88.     (i.8...io.o) 
R.  A.  5"  50™  43'        Decl.  +  44°  5& 

1911.622              39?55             184768 
•625              39-45             184.15 
•644              39-51             184.99 
-663              39-78            184.65 

1911.05              349-8i             129-49 

From  all  the  measures  of  both  companions  (1840-1911),  the 
corrected  proper  motion  of  0  Aurigae  is  : 

AC       R.  A.  +  orosg       Decl.  —  o':o66 
AD                     0.043                      0.076 

+  0.041                 —  0.071 

Therefore  the  annual  movement  is  : 
o"o82    in    150^0 

From  the  star  catalogues: 

Auwers         o".ogo    in     153?!     " 
Newcomb      0.107    in     148.0 
Boss              0.105    >n     149.1 

1911.64                39.57            184.62 

139 


Burnham:   Measures  of  Proper  Motion  Stars 


3079.    59   Orionis.    H  V.  100.     (6.1...  9.  7) 

3095.     2  827  rej.     (8. 

i.  ..io.  4) 

R.  A.  5"  52™  io'       Decl.  +  i  "  49' 

R.  A.  5"  54"'  o'        Decl 

-o°3i' 

I9II.775            204?53              37''04 

1906.796                 222?  I 

25'.'66 

.813            205.33              36.78 

.906                 222.  0 

25.72 

.815            205.35              36.79 

.964                 222.4 

25.91 

1911.80              205.07              36.87 

1906.89                   222.2 

25.76 

The  proper  motion,  if  any,  is  very  small  and  uncertain  : 

No  other  measures. 

Auwers         0*015    in    I36?3 

Boss              0.013    in     159.4 

The  measures  of  the  companion  show  that  the  principal  star 
has  no  sensible  movement. 

3108.    2  832  rej.     (9 

0...9.9) 

R.  A.  5"  55"  38'        Decl 

-  14°  32' 

1906.796              87?o 

24*06 

.906              86.7 

24.24 

3088.    S  504.    (8.  5...  8.6) 

.964            86.8 

24.23 

1906.89              86.8 

24.18 

R.  A.  5"  53m  19'       Decl.  —  20°  io' 

No  other  measures.    There  is  a  13  m  star  nearer  A  : 

1907.022             7o?o             3^46 

ioo?s        I27o 

Probably  unchanged.     The  early  measure  by  South  is  too 

large  in  distance. 

3118.    Z  836.     (8.3. 

..10.8) 

R.  A.  5"  56m  29'       Decl 

.  —  2°  22' 

3090.     2825.     (7.  8...  9.0) 

1906.906             28?g 

I  "64 

R.  A.  5"  53ra  30'        Decl.  +  36°  3  1' 

7.102             26.2 

1.49 

1907.695             I45°7                  7^89 

7.120             25.0 

1.79 

.731             145.2                  8.01 

1907.04               26.7 

1.64 

.788            145.2                 8.15 

No  clisncfc 

1907.74              '154                  8.02 

No  change. 

3123.    2  834.    (8.0 

..8.8) 

R.  A.  5"  56m  52'       Decl. 

+  30°  14' 

3093.    HIV.  48.    (8.  6...  1  1.  9) 

1007.695            3o8?4 

22*96 

R.  A.  5"  53m  48'        Decl.  +  23°  20' 

-788            307.9 

23.02 

.848           308.0 

22.62 

A  and  B 

1907-78             308.1 

22.87 

1911.720            259?o                3  i  "30 

•  755            259.3                3i.6o 

No  measures  since  1866.      Fixed. 

•775            258.8               31-21 

1911-75             259-0               31-37 

The   large   change   in    distance   apparent    from    Herschel's 
measure  in  1783  is  not  likely  to  be  real. 

3127.     2  824.     (8.0. 

.  .10.0) 

B  and  C  (12.0) 

R.  A.  5"  57™  44"        Decl. 

+  76°  32' 

1911.720            2O7?3                  s"9° 

1908.769           20i?3 

i?6i 

.775            206.2                  5.67 

10.838           204.2 

1.30 

I     A  C 

IfiT  T    7C                          ''  <  >    7                              ^    78 

10.895           205.7 

•45 

j  y  i  i  i  /  $                     *\AJ  •  /                           j  •  /  ** 

1910.17             203.7 

1.45 

much  smaller. 


Change  in  angle?    No  other  measures  since  1869. 


140 


Burnham:   Measures  of  Proper  Motion  Stars 


3130.    283i.    (8.7...  8.  7) 
R.  A.  5"  s8m  18"       Decl.  +  68°  o' 

1908.636             75-7               ""76 
•  652             75.7               11.88 
.671             75-4               ii-77 

3179.    2852.    (8.7...  9.7) 
R.  A.  6"  2™  T       Decl.  +  7°  23' 

A  and  C  (9.3) 
1908.862             28?5o             43*71 
.884             29.00             44.01 
.898             29.27             43.93 

1908.65               75.6               ii.  80 
No  other  recent  measures. 

3135.     Skinner  2.     (8.  2...  9.  5) 
R.  A.  5"  58™  43'       Decl.  —  I5°40' 

1906.796            I7i°5                 5*14 
8.063            172.6                5.32 
8.159            172.1                 5-24 

1908.88               28.92             43.88 
No  other  measures  since  Dembowski. 

3186.    4  Monocerotis.    P  17.    (6.  5...  10.5) 
R.  A.  6"  2™  48'       Decl.  —  11°  8' 

A  and  B 
1906.906            i8i?3                3?O2 
7.102            184.8                3.24 
7.791            182.8                3.03 

1907.67             172.1                 5.23 

The  only  other  measure  is  that  given  in  Part  I  of  the  Gen- 
eral Catalogue. 

3167.    2850.    (8.5...  10.2) 
R.A.6"im24'       Decl.  —  3°  59' 

1906.906             I7?6                 i"88 
7.102             20.5                 1.98 

1907.27             183.0                3.10 

A  and  C  (11.5) 
1906.906           248^3                 9709 
7.102           247.9                9-ii 
7.791            247.4                8.90 

1907.27             247.9                9-03 

The  components  appear  to  have  a  common  proper  motion. 
Auwers       o"o29    in    84^2 

3197.    P  1242.    (8.  6...  8.  8) 
R.A.6"3m42'       Decl.  —  6°  18' 

AB  and  C(=H  2298).    (10.7) 
1909.760             93?i5             43"8o 
10.091             93-48             43.94 
10.093              93-12              43.71 

1907.00               19.0                 1.93 
No  other  recent  measures. 

3171.    2848.     (7.3...  8.0) 
R.  A.  6"  i"  42'       Decl.  +  13°  59' 

A  and  C  (12.0) 
1910.678           2o6?6               is?54 
.720           295.3               15-28 
•739           295.6               15.20 

1910.71             295.8               15.34 

A  and  E  (9.0) 
1910.678            l83?o7              43?47 
.720            183.50             43.11 
-739            183.38             43.30 

1909.98               93.25              43.82 

The  principal  star  of  H  2298  is  in  h  381.    The  Herschel 
nebula  IV.  19  is  2m  p  and  4'  s  and  surrounds  the  9.5  m  star  SD 
(6°)  1415- 
h  381  (star)  and  SD  (6°)  1414 
1910.091            I92?55             88"23 
.093            192.63             87.81 

1910.71              183.32             43.29 

The  several  components  of  2  848  are  some  of  the  principal 
stars  of  h  379. 
No  material  change  since  Struve. 

3176.    O2  134.    (7.0...  8.3) 
R.  A.  6"  i™  54'       Decl.  +  24°  27' 

1910.835            i88?9               31^18 
.838            187.5               30.85 
.856            188.2               30.90 

1910.09             192.59             88.02 

3219.    H  2301.    (II.O...H.3) 
R.A.6"5"'431       Decl.  +  5°  28' 

1911.164           353?g               io°oo 
.796           354-7               10.14 

1910.84             188.2               30.98 

In  h  377;  mostly  small  stars.    No  relative  motion. 
For  the  principal  star  we  have: 
A.  G.  Ber.     o':o87    in    6p?9 

1911.48             354-3               10.07 

The  components  of  H  2301  are  among  the  smaller  stars  of 
h  384.    The  angle  in  the  Hd  measure  of  1867  is  erroneous. 

10 


Burnham:   Measures  of  Proper  Motion  Stars 


3229.    02  (App.)  70.    (7.0. .  .7.5) 

R.A.6b6ra49'       Decl. +  24°  i' 


1910.971 
11.107 
11.142 


I78?oo 
178.00 
177-97 


"5.42 
115-69 

"5.71 


1911.07  177-99 

Perhaps  diminution  in  distance. 


115-61 


3238.    2872.    (6.0... 7.o) 
R.A.<?7"34'       Decl. +  36°  11' 

A  and  B 
1908.766  2i7?s  11719 


.788 
.804 


217.0 
216.8 


11.41 

II. 21 


1908.79 


217.1 


11.27 


A  and  C(n.o) 

1908.766           284?20  .203735 

.788           284.10  203.59 

.826           284.02  203.93 


1908.79 


284.11 


203.62 

The  only  other  measure  of  the  distant  small  star  is : 
1879-53  286!88  201703  2n  Bl. 

A  comparison  of  this  with  the  recent  measures  implies  a 
proper  motion  of  A  much  larger  than  that  given  by  meridian 
positions : 

Measures      07346    in      3O?3 

Auwers         0.076    in    270.0 

Boss  0.062    in    270.0 

The  proper  motion  of  B  is  given : 

Boss     07035     >n    240?7 

It  is  possible  that  we  have  here  an  excessively  rare  example 
of  a  small  star  with  a  sensible  proper  motion,  of  which  only  a 
few  instances  are  known  in  the  entire  heavens.  It  is  not 
probable  that  there  is  any  very  large  error  in  the  old  value, 
considering  the  magnitude  of  the  principal  star;  and  still  less 
probable  that  the  faint  comparison  star  is  moving  at  all.  There- 
fore, the  explanation  must  be  first  looked  for  in  errors  of  the 
micrometer  positions. 

It  may  be  suggested  that  the  first  measures  belong  not  to  AC, 
but  to  BC.  In  that  case  my  measures  reduced  to  BC  would 
stand,  287?! i :  199732,  which  would  still  leave  too  large  a 
change. 

To  show  hereafter  whether  there  is  really  any  motion  in 
C,  I  have  connected  a  third  star: 


1908.788 
.826 
.843 


C  and  D  (n.i) 
164? 10 
163.80 
164.15 


120-53 

120.21 
I2O.I7 


1908.82 


164.02 


120.30 


3239.    f\  Geminorum.    p  1008.     (4. 2... 8. 8) 
R.  A.  6"  7™  38'        Decl.  +  22°  32' 

1906.966  200?6  ll'24 

3241.     71  Orionis.    H  2302.     (s.3...n.o) 

R.  A.  6*  7™  46'       Decl.  +  19°  12' 

A  and  B 

202?53  28715 

202.30     28.15 
202.65 


1907.865 

7-997 
8.000 


1907.95 


1907.865 
7.997 
8.000 


202.49 

A  and  C  (11.3) 

267?47 
267.25 
267.05 


28.11 
28.14 

787os 
77-43 
77-39 


1907.95 

1907.865 

7-997 
8.000 


267.26 

A  and  D  (10.8) 
253^83 
253.62 
253.92 


77.62 


87.49 
87.61 


1907.95 


253-79 


87.61 


The  prior  measures  of  AB  are  given  in  the  General  Cata 
logue.    For  the  distant  stars  we  have  the  following: 

AC        1886.23        264^92        8o774        2n        Eng 
AD        1886.23       251.89       91.17       2n        Eng 

A  comparison  of  the  Eng  and  (5  positions  of  the  three  con 

panion  stars  gives  for  the  proper  motion  of  71  Orionis: 

AB        R.  A.  — ofo65        Decl.  — o7i66 

AC  0.133  0.159 

AD  0.116  0.179 

—  0.105  —  0.168 

Hence  the  proper  motion  of  the  large  star  is : 
07198    in    2i2?o 

Other  values  from  meridian  positions  are : 


Auwers 

Stumpe 

Porter 

Hedrick 

Boss 


07203 
0.283 

O.222 
0.213 
0.223 


213-4 
203.2 
212.5 
204.3 
205.9 


3250.    2876.    (8. 5.. .n.o) 
R.  A.  6"  8™  44-        Decl. +  53°  42' 

A  and  C  (7-5) 

1909.744     281^70  209739 

10.049     281.65  209.48 

10.128     281.83  209.19 


281.73 


209.35 


C  is  Groombridge  1122,  which  is  given  a  proper  motion 
o7oi6  in  35o?6. 


1875        28l?2      21074 

1880.48   280.09   209.73 


2n 


A.  G.  Harv. 
Bl. 


143 


Burnham:   Measures  of  Proper  Motion  Stars 


3267.    28;8.    (7.2...ii.o) 
R.  A.  6"  iom  13'        Decl.  +  62°  27' 

A  and  B 
1908.747            330?  10              23^77 
.788            330.75              23.89 

3284.    H  2307.    (9.  2...  10.  6) 
R.A.6hiim48"        Decl.  +  54°  6' 

1907.788             91  ?5               23^5 
.791             91.4               23.34 
.807             91.9               23.02 

.804            331-63              23.87 

1907.80               91.6               23.20 

1908.78              330.83              23.84 

rom  the  measures  of  AB  the  proper  motion  of  A  is  : 
o"i29    in     i82?6 

A  and  C  (11.2) 
1908.747              68?io            H4"8o 
.788              67.95             114-72 
.804              67.85             114.98 

Distance  disagrees  with  prior  measure. 

3287.    H  3845 
R.  A.  6"  i2m  o'       Decl.  —  22°  40' 
1907.022             I9?2               35^52 
Comparing  this  with  the  measures  by  Doolittle  in  1898  shows 

1908.78                67.97            «4.83 

he  other  measures  of  AC  are  too  discordant  to  be  used  for 
proper  motion  of  A: 
1880.22           69?23            H3"S7            in            Bl 
1880.74           68.32            112.07            m            Bl. 

3270.     2885.     (8.  5...  10.  2) 
R.  A.  6"  iom  26"        Decl.  +  6°  2' 
1910.739            297?2                io''27 

that  the  large  star  has  a  considerable  proper  motion.    Further 
and  later  measures  are  necessary  to  give  it  a  definite  value. 
Porter      0^324    in     I43?3 

3289.    2882.    (8.o...n.o) 
R.  A.  6"  I2m  6"        Decl.  +  64°  58' 

A  and  C  (10.5) 
1910.684             23?73            H9"56 
.701             24.07            119.25 
.703             24.08            119.36 

.835            298.9                10.05 
.856            297.2                  9.69 

1910.70               23.96            119.39 

1910.81             297.8               10.00 
i  h  385,  a  coarse  scattering  cluster. 

3277.    4  Lyncis.    2  881.     (6.  4...  7.  9) 
R.  A.  6"  1  1"1  24'        Decl.  +  59°  25' 

AB  and  C  (ii.o) 
1908.747            356°oo             ioo"oo 
-788            356-05             100.22 

apparent  change  is  impossible. 
1880.48            I3°23            H9"35           2n            Bl. 

3303.    O2(App.)74-    (6.  7...  8.  6) 
R.  A.  6"  13™  12'        Decl.  +  25°  15' 

A  and  B 
1910.971             264^35              57"92 
11.104            264.40              57-91 
11.142            264.37              57.71 

•843            356.25             100.14 

1911.07              264.37              57.85 

1908.80              356.17             100.12 

he  previous  measures  are  : 
1879.25           355°88           ioi"i4           in            Bl 
1879.71           355-68           100.38           in            Bl 

No  relative  motion. 

A  and  o  (11.9) 
1910.971            289?33              4i':36 
11.104            290.13              40.80 
11.142            289.93              40.82 

he  measures  of  this  star  should  be  continued.    The  proper 
ion  of  4  Lyncis  is  uncertain  : 
Auwers         o"o25    in    293?6 
Boss              0.006    in      20.9 

"here  is  a  faint  star  near  the  close  pair,  not  previously 
erved  : 
AB  and  o  (12.9) 
1908.788              96?3                261'37 
.824              96.3                26.45 
.826              95.9               25.47 
.843              97.2                26.26 

1911.07              289.80              40.99 
No  other  measures  of  the  faint  star. 

3313.     8513-     (7-2...  8.  5) 
R.  A.  6"  14™  4s        Decl.  +  21°  ii' 

B  and  C  (12.0) 
1910.971              84?9                I5"o6 
11.104              86.5                14.90 
11.142              86.1                14.98 

1908.82                96.4                26.14 

1911.07                85.8                14.98 

143 


Burnham:  Measures  of  Proper  Motion  Stars 


If  there  is  any  proper  motion,  it  seems  to  be  common  to  the 
three  components. 
The  principal  star  is  Piazzi  VI.  62. 

A.  G.  Berlin      oTioi    in    270° 

3327.    H  2315.    (n. 7... n. 7) 
R.  A.  6"  15™  6'       Decl.  —  7°  14' 


1910.933 
11.796 


3?  i 
3-4 


6:50 
6.41 


1911.36  3-3  6.45 

The  only  other  measures  are  my  own  in  1901. 
H  2315  is  in  h  386,  the  principal  star  of  which  is  SD  (7°)  1384. 
Most  of  the  stars  are  10  to  13  m. 

3339.    2896.    (8.3... 8.7) 

R.A.6M6-2I'  Decl. +  51°  56' 
A  and  C  (10.9) 

1910.684  324°30  40*89 

.701  323.70  40.71 

•  703  323.92 40-64 

1910.70  323.97  40.75 

The  proper  motion  given  A  from  meridian  observations 
seems  doubtful  from  the  measures  of  this  star. 

1880.48  324?42  40*36  2n  Bl. 

A.  G.  Harv.     0*047    in    90° 

3349.    SMonocerotis.    2  900.    (4.0... 6. 7) 
R.  A.  6'  17™  25'       Decl. +  4°  39' 


1911.775 
•  796 
.815 


A  and  B 

25°9 
27-3 
28.4 


13*25 
13.21 
13.15 


1911.79  27.2 

A  and  C  (12.2) 
1911.777     254°so 
.796     254.17 
.832     254.67 


13-20 


93*42 
94-30 
93-43 


1911.80  254.45  93-73 

Large  stars  relatively  fixed.    No  other  measures  of  C.    The 
proper  motion  of  A  is  small  and  uncertain: 

Auwers         0*021    in    299?! 
Boss  0.012    in    255.9 

Newcomb     o.on    in    325.7 

3375.    2904.    (9.0...  10.2) 
R.A.6»20-i6'       Decl. +  51°  51' 

A  and  C  (8.5) 

1910.684  92.60  237778 

•701  92.75  237.75 


1910.69  93.67  237.76 

Apparently  no  proper  motion  in  either. 

1880.59          92!30  237:24  3n 


Bl. 


3379.    2905-    (8.0... 10. o) 
R.A.6b20m3i'        Decl.  +  40°  12' 

A  and  C  (10.5) 

1908.884            I47?53  151*41 

.898            147.73  151-52 

.900            148.34  ISI.45 


1908.89 


147.87 


151-46 


From  the  earlier  positions  it  is  apparent  that  2  905  has  no 
sensible  proper  motion.  The  second  is  from  the  Astrographic 
Catalogue. 


1880.48 
1894.95 


147.52 
147-70 


151*54 
151.20 


Bl 

Donner 


3381.    2906.    (8.3... 9-5) 

R.  A.  6"  20m  34'       Decl.  +  37°  27' 

A  and  C  (10.2) 


1910.701 
.720 
•  739 


141:20 
141.17 
140.83 


155.58 
155.62 


1910.72  141-07  155-49 

In  the  early  measure  the  distances  are  discordant,  and  differ 
as  much  as  1*7,  hence  change  is  doubtful. 

1880.60  I40?78  154:57  3n  Bl. 


3383.    15  Geminorum.    Sh  70.    (6. 8... 8. 2) 
R.  A.  6"  20- 37'       Decl. +  20°  52' 

A  and  B 

1911.720  204?45  29"oo 

•755  204.65  29.08 

29.00 


•  775 


204.65 
204.78 


I9".7S  204.63 

A  and  C(i2.8) 


1911.720 

•  775 


34°28 
33-00 


29.03 

77*68 
77-73 


I9".75  34-09  77-70 

The   faint  star  for  the  proper  motion  of  A. 
measures : 

Auwers  0:058  in    237?8 

Hedrick  0.058  in    201.6 

Boss  0.063  in    206.6 


3402.    ii  Monocerotis.    fJ  570. 
R.A.6'23"o'       Decl.  — 6°  57' 

A  and  D  (5.0... 12. 5) 
1911.796  54°6  25:72 

11.942  55.1  25.82 

12.046  56.9  26.06 


No   other 


1911.93 


55-5 


25-87 


144 


Burnham:   Measures  of  Proper  Motion  Stars 


The  apparent  change  is  very  small,  and  later  measures  should 
be  made.  It  is  not  likely  that  the  faint  star  is  moving  with  the 
others.  The  value  of  the  proper  motion  is  somewhat  uncertain : 

Auwers         0*076    in    296^4 

Boss  0.037    in    270.0 


3418.     Spi6.     (8.5... 9.8) 
R.  A.  6"  24™  2"       Decl.  +  56°  44' 

A  and  C  (9.6) 

1908.882  338? 18  55*80 

.884  337-21  56.32 


.898 


337-21 
338.40 


56.15 


1908.89  337-93  56.09 

Change  doubtful. 

1880.48          336?30  56*17  2n 


3422.    O2  143.    (6. 8... 9.9) 
R.A.6"24mi2>       Decl. +  17°  i' 

A  and  C  (11.5) 
I9II-775  342^83  42:'s6 


Bl 


.796 
.835 


342.92 
342.93 


42.70 
42.38 


1911.80 


342.89 


42.55 

For  the  proper  motion  of  the  principal  star.    This  has  been 
given : 

A.  G.  Ber.      0*089    in    191?! 


3423.    Aurigae  229.    2  918.    (6. 7... 7. 7) 
R.  A.  6"  24°  21'       Decl. +  52°  33' 

B  and  C  (10.0) 

1908.884  26?87  135*80 

.898  26.85  135-62 

.900  26.95  135.93 

1908.89  26.89  I35-78 

Further  measures  are  needed  to  correct  the  proper  motion 
of  A: 

1880.48          27?i8  133-75  2n  Bl 

The  proper  motion  of  A  is  given : 

A.  G.  Harv.     0*033    >n    27o?o 


3449.    2928.    (7.4... 8.0) 
R.  A.  6*  26™  26'       Decl.  +  38"  38' 

B  and  C  (n.o) 
1910.701  I22?93  128*94 


.720 
•  739 
1910.72 


123.13 
122.60 

122.89 


128.00 
128.23 

128.39 


The  principal  star  has  no  sensible  proper  motion : 
Groombridge     0*011     in    2i8?o 

The  three  stars  are  relatively  fixed. 

1880.52  I22?73  128*84  2"  Bl 

3450.    2922.    (7.2...II.O) 
R.  A.  6*  26"  33'       Decl.  +  64°  50' 

A  and  B 
1912.066  I35?6  10*58 

A  and  C  (10.5) 
1912.066  5?4  25*46 

From  the  measures  of  AC  by  2,  A,  and  (J  (1831-1912)  we 
have  for  the  proper  motion  of  the  principal  star : 
0*022    in    323?7 

B  appears  to  be  moving  at  about  the  same  rate  and  direction. 
They  may  make  a  system  of  the  61  Cygni  type. 

3490.    2941.    (7.0... 8.0) 
R.A.6"30mii8       Decl. +  41°  41' 

A  and  C  (10.4) 

1909.703  133^82  82*76 

133-95 
133-63 


•  744 
.821 


83.02 
83.19 


1909.76 


133-80 


82.99 


From  the  Astrographic  Catalogue  we  have : 

1894.95  I34°3  82*56  Donner 

This  is  doubtless  the  star  observed  as  Sh  367,  and  given  with 
a  large  error  in  the  distance. 


3500.    Hosts.    (8.0...  12. 2) 
R.  A.  6"  30°  58'       Decl. +  9°  14' 

A  and  B 

1909.706  251?!  10*05 

.838  252.0  10.67 

.936  250.6  10.29 

1909.83  251.2  10.34 

A  and  C  (13.6) 
1909.838  I03?5  13*06 

C  has  not  been  previously  seen;  a  third  faint  star  more 
distant.  The  principal  star  was  wrongly  identified  by  Hough. 
It  should  be  DM  (9°)  1306  instead  of  1281.  The  place  is  sub- 
stantially correct. 

About  30'  distant,  sf  Ho  515  is  the  curious  object,  h  399, 
which  has  a  well-defined  nucleus,  with  a  comet-like  tail,  spread 
out  like  a  fan  in  the  direction  of  70°. 

h  399  and  DM  (8°)  1418 
1909.838  37°9  140*87 

.936  38.3  141-24 


1909.89 


38.1 


141.06 


145 


Burnham:   Measures  of  Proper  Motion  Stars 


3502.     Arg  15.     (8.  4...  9.0) 
R.A.6h3im7"       Decl.  —  24°  2' 
1907.022           233  ?8               37786 
No  other  measures  of  this  pair. 

3512.    2944.    (8.0...IO.O) 
R.  A.  6"  31"  44*       Decl.  +  48°  22' 

A  and  C  (9.3) 
1910.091            i8i?42            194724 
.093            181.45            194-79 
.109            181.58            194.82 

3559.     12  Lyncis.     ^  948 
R.  A.  6"  35m  38'        Decl.  +  59°  34' 
A  and  D  (5.2..  .10.8) 

1910.049            257?45             I73"53 
.091            257.52             172.43 
•093            257.35             172.79 

1910.08              257.44            172.92 

A  prior  measure  is  : 
1879.48           254^92            167701            2n            Bl. 

Further  measures  are  needed.    The  apparent  change  seems 
too  large  for  the  proper  motion  of  A. 
The  proper  motion  of  12  Lyncis  is  doubtful  : 
Auwers                0^085    in    275?4 
Boss                     0.015    in    273.8 
Groombridge       0.035    in    256.8 

3580.     2957-     (7  -5-..  9-0) 
R.A.6"37m27'       Decl.  +  30°  57' 

1907.791             92?7                3725 
.810             91.3                 3.40 
.848             92.1                 3.43 

1910.10             181.48            194.62 

No  change  in  AB.    C  is  DM  (48°)  1412. 
1875                 i8i?l              195^6                           A.  G.  Bonn 
1881.54           181.03            196.55           2n            Bl. 

3521.    H2.    (7.  8...  7.8) 

R.A.6'32m35"       Decl.  +  9°  45' 

1907.675           281  ?9                0^77 
7.694           275.2                 0.70 
8.709           276.4                0.78 

1907.82               92.0                3.36 

No  measures  since  1866.    Without  change.    Two  faint  stars 
following;  the  nearest  13.5  m  from  A,  loi?i  :  1879. 

3587.    2958.    (6.0...  6.0) 
R.  A.  6"  38™  1  1-       Decl.  +  55°  50' 

B  and  C  (10.9) 
1910.049            264?57            165700 
.091            264.48            164.97 
.109           264.72            165.53 

1908.02             277.8                0.75 
Probably  unchanged. 

3534.    2951.    (8.  5...  10.  7) 
R.  A.  6*  33"  Si'       Decl.  +  9°  56' 

A  and  B 
1908.884            309?4                21743 
9.071             310.1                21.33 
9.091            309.7                21-39 

1909.02              309.7                21.38 

B  and  C  (12.0) 
1908.884            229?4                11730 
9.071             230.2                11.31 
9.091            228.4               H-77 

1910.08             264.59            165.17 

The  only  other  measure  is  : 
1880.47           263?34            i63:'35           2n           Bl. 

From  these  measures  we  have  for  the  proper  motion  of  A  : 
07137    in    147^3 

From  meridian  positions  : 
Bossert         o7ii2    in    I53?2 
Boss              0.126    in     148.7 

3589.    A.  G.  120. 
R.  A.  6"  38™  31'       Decl.  +  3°  48' 

Not   double,   and   nothing  near  answering  the   description 
(1906.79). 

1909.02             229.3               11.46 

There  is  a  misprint  in  the  angle  of  BC  in  Part  II  of  the 
General  Catalogue;  for  2Op?9  read  229^9. 

3553.    H  2335-    (9-0...  n.  5) 
R.  A.  6*  34-  56'       Decl.  +  i°  18' 

I9II.947                 I02?8                      17757 

12.046            101.7               17-44 

1911.99             102.2               17.50 

No  other  measures,    h  400  is  I1"  40'  p  II  2335  ;  mostly  small 
tars. 

146 


Burnhatn:   Measures  of  Proper  Motion  Stars 


3596.     Sirius.     A.  G.  Clark  I. 
R.  A.  6"  39™  S3'       Decl.  —  16°  33' 

1908.750             94°67               8':s6 
.769             94.06               8.60 
.939              93.60                8.80 
•974              94-35                8.83 

3612.     Espin  15.     (6.  8...  10.  2) 
R.  A.  6"  41™  10'       Decl.  +  46°  19' 

1908.997            275?6                29"09 
9.091            275.8                29.09 
9-093            275.8                29.30 

distance 

Bl 
Bl. 

14  Lyncis 

1909.06              275.7                29.16 

No  proper  motion  found  for  the  bright  star.    The 
in  the  former  measures  appears  to  be  too  small. 

3625.     14  Lyncis.    2963.     (5.  9.  ..7.1) 
R.  A.  6"  42"  30'        Decl.  +  59°  35' 

AB  and  C  (H.I) 
1910.049            12  i?  50            180^75 
.091            121.55            180.66 
.093            121.25            180.98 

1908.86                94.17                8.70 

3600.    2960.    (7.3..-  9.2) 
R.  A.  6"  40™  i'        Decl.  +  53°  10' 

1908.747              66?7                2i:'79 
.788             66.8               21.90 
.824             68.2               21.80 

1908.79               67.2               21.83 

No  other  measures  since  1867.    The  principal  star  is  given  a 
small  proper  motion: 
A.  G.  Harv.      0^041     in    227?$ 

3604.     2965.     (8.  3...  10.3) 
R.  A.  6"  40m  36'       Decl.  +  11°  3' 

A  and  C  (13.0) 
1912.810            3iS?3                16*30 
.867            318.2                16.50 
.890            320.3                16.58 

1910.08             121.43            180.80 

The  other  measures  are  : 
1879.24           I2i?53            i8i:'6s            in 
1879.71            121.87            180.75            in 

Little  or  no  relative  change.    The  proper  motion  of 
is  small  and  uncertain. 
Groombridge       o"o37    in     199?! 
Boss                     0.047    m    270.0 
Auwers                0.047    in    220.9 

3626.     A  58.     (7.6...  8.3) 
R.A.6b42m39°        Decl.  —  3°  58' 

1906.796            148?!                  4"22 
.966            147-9                 4-35 

1912.85              319.0                16.46 

A  and  D  (8.7) 
1912.810              63?97              44;'59 
.867              64.67              44-35 
.890              64.93              44.16 

1912.85                64.52              44.37 

The  measures  of  the  two  more  distant  companions  are  now 
sufficient   for  a  very  accurate   determination   of   the   proper 
motion  of  the  two  principal  components.    From  the  measures 
of  AC  (1879-1912)  and  of   AD  (1829-1912)  we   have   for  the 
motion  of  A: 

Measures  of  AC        R.  A.  +  o"o55        Decl.  —  0^038 
Measures  of  AD                 +0.053                 —  0.045 

Therefore  the  annual  movement  of  A  and  the  near  com- 
panion, B,  is: 

o"o68    in     I27?9 

3606.    2962.    (8.  5...  8.  5) 
R.  A.  6"  40™  42'        Decl.  +  26°  50' 

1907.807            242?!               26"oo 
8.671            242.4               25.80 
8.692           242.2               26.10 

1906.88              148.0                 4.28 

The  only  other  measure  is  given  in  Part  I  of  the  General 
Catalogue. 

3627.    Espin  67.    (8.  7..  .10.0) 
R.A.6h42m49"        Decl.  +  40°  38' 

1907.807           307°8                 5''7» 
8.063            309.3                 S-9I 
8.671            310.0                5.91 

1908.18             309.0                5.87 

3633.    2968.    (8.0...  9.0) 
R.  A.  6"  43™  17"        Decl.  +  52°  50' 

A  and  B 
1907.120            287?!                2o"59 
.137            288.2                20.54 
.140            287.7                20.97 

1908.39             242.2               25.97 
No  late  measures;  unchanged. 

1907.13              287.7                20.70 

147 


Burnhain:  Measures  of  Proper  Motion  Stars 


These  stars  have  no  relative  motion.    The  principal  star  is 
given  some  proper  motion  : 
A.  G.  Harv.      o7i44    in    2d6?o 

There  is  a  13.5  m  star  not  previously  seen  : 

BandC 
1907.  120            59?8                8738 
7.137             59-6                8.19 
7.791             60.2                8.29 
8.633             61.9                8.46 
8.769             61.0                8.67 

This,  with  the  two  positions  by  O2  (1850-1907),  gives  for  the 
proper  motion  of  15  Lyncis: 
o"i30    in     i63?4 

Other  values  from  meridian  observations  are  : 
Auwers               07124    in    179^6 
Groombridge       0.126    in     190.7 
Newcomb             0.131     in    172.3 
Boss                    0.134    in    177-7 

1907.89               60.5                 8.39 

3653.    sgdurigae.    2974.    (6.7...io.o) 
R.  A.  6"  44°  46'       Decl.  +  39°  I' 
A  and  B 

3685.    2978.    (7.o...io.o) 
R.A.6"47ra22'        Decl.  +  38°  3' 

1908.728             oo?45              16742 
•747             00.55              16.84 
.766             89.43              16.82 

1908.636           223?9               22*34 
.652           224.0               22-43 
.671            223.3               22.40 

1908.75               90.14              16.70 

The  measures  of  2,  A  and  (5  (1831-1908)  give  for  the  true 
proper  motion  of  the  principal  star  : 

1908.65             223.7               22.39 

B  and  C  (13.3) 
1908.689           2i7?s               25778 
.824           219.3               25.74 
.843            219.8               26.01 

07039    in    222?s 

The  proper  motion  of  A  (Groombridge  1241)  is  given  from 
meridian  positions  : 

Greenwich        0*048    in    25o?4 

1908.79             218.9               25.84 

No  late  measures  of  AB,  and  no  other  measures  of  the  faint 
star. 
The  proper  motion  of  59  Aurigae  is  very  uncertain  : 
Auwers          0^035    in    86?7 
Boss               0.008    in    49.4 

3670.    2977.    (8.0...  9.5) 

3692.    38  Getninorum.    2982.    (5.  4...  7.  7) 
R.  A.  6"  47-  52'       Decl.  +  13°  20' 

A  and  C(n.o) 
1912.810           328!i7            109738 
.867            328.00            109.23 
.800           328.37            109.28 

R.A.6146m20<       Decl.  +  48°43' 

A  and  B 
1910.720            I27?4                 1797 
•739            129-0                2.00 

1912.85             328.18            109.30 

Faint  star  for  the  proper  motion  of  A;  no  other  measures. 
From  the  star  catalogues  we  have  : 
Auwers        0^087    in    H4?3 

1910.73              128.2                 1.98 

A  and  C  (10.7) 
1910.720           223?oo            152*29 
.739           222.47            152.64 
.770           222.82            153-07 

Boss             0.112    in    139.3 
3710.    2991.    (8.0...  9.0) 

1910.74             222.76            152.67 

No  proper  motion  in  A  : 
1881.50          222?47           152708           2n           Bl. 

3878.    15  Lyncis.    O2  159.    (5.1.  ..6.  2) 

R.  A.  6"  49™  40'       Decl.  +  25°  7' 

A  and  B 
1907.022            i67?2                3776 
.102            168.7                 3-73 
.118            166.8                3.63 

R.  A.  6'  46"  54'       Decl.  +  58°  35' 

A  and  D  (9.5) 
1907.848            i67?3o            199*33 
8.000            167.30            199.14 
8.025            167.58            109.11 

1907.08             167.6                3.71 
Possibly  slow  retrograde  motion  in  angle. 

C  and  D  (10.9..  .11.4) 
1907.022            359?5                13730 
.118            358.5                13-09 

1907.96             167.39            199.19 

1907-07             359-0               13.19 

148 


Burnham:  Measures  of  Proper  Motion  Stars 


The  principal  star  is  correctly  identified  in  Lewis'  "  Struve  " 
as  W*  VI.  I4S3-4,  and  the  correction  on  p.  XXIII  of  the  Intro- 
duction, changing  it  to  1449,  is  erroneous.  The  latter  is  not  a 
double  star.  The  pair  measured  by  Lewis : 

1904.22  358?5  6*30 

I  could  not  find  unless  it  is  the  faint  stars  CD  given  above. 


1907.022 


A  and  C 
?2  13474 


Single  dist. 


3725.    n  Cams  Min.    2997-     (4-7-  •  -8.0) 

R.  A.  6"  50™  36'       Decl.  — 13°  S3' 

A  and  C  (10.0) 


1912.810 

288?  lo 

87703 

.867 

288.30 

86.76 

.884 

288.07 

86.85 

1912-85 

288.16 

86.88 

A  and  D  (10.2) 

1912.810 

6i?3o 

I05"94 

.867 

61.87 

105.48 

.884 

6i.93 

105.57 

1912.85 


61.70 


105.66 


The  other  measures  by  Engelmann  (1673)  on  a  single  night 
are: 

AC       1865.18  288?4  9o"o 

AD        1865.18  60.7         107.0 

These  appear  to  be  rough  micrometer  settings,  and  the 
measures  should 'be  continued  for  the  proper  motion  of  the 
large  star.  This  is  uncertain  from  the  meridian  positions: 

Auwers         0*027    in    282^9 

Boss  0.007    in      97.8 


3752.    41  Geminorum.    O2  162  rej.    (6. 2... 11.7) 

R.  A.  6"  52™  57"       Decl.  +  16°  6' 


1912.810 
.890 


153-7 


21  "34 
21.62 


1912.85 


154-4 


21.48 


It  is  obvious  from  a  comparison  of  this  with  the  prior  meas- 
ures by  P,  Doo  and  Hu  that  the  principal  star  has  no  sensible 
proper  motion ;  and  this  appears  also  from  the  transit  positions. 

Auwers         0*033    m    293°3 

Boss  0.017    in    227.2 


3793.    2  1009.    (6. 7... 6.8) 
R.  A.  6*  56™  7'       Decl.  +  52°  56' 

B  and  C  (10.8) 

1910.703  133? 15  178772 

•720  133-57  178.32 

.739  133-28  178.65 


1910.72 


133-33 


178.56 


The  proper  motion  of  A  is  uncertain : 

Groombridge       0*055    in    222?o 
A.  G.  Harv.         0.046    in     188.9 

The  only  other  measure  of  C  is : 

1879.51  I33°5i  I79"62  2n 


Bl. 


3797.    t  Geminorum.    Sh  77.    (4.0... 10.5) 
R.  A.  6"  56™  59"       Decl.  +  20°  45' 

A  and  B  (10.8) 
1907.769  83?8a  86"oo 


.772 
.807 


83-87 
83.81 


87.25 
87.24 


1907.78 


83.83 


A  and  C  (8.5) 
1907.769  350?5o 

-772  350-23 

.807  350.45 


87.16 


95-05 
94.88 
95.28 


1907.78         350.39 

C  and  c  (12.3) 


1907.769 
.772 
.807 


166.40 
166.51 


95-07 


27.25 
27.13 
27.11 


1907.78 


166.21 


27.16 


The  apparent  motion  of  C  from  A  in  1875  and  the  position  of 
1907  is : 

07078    in    297^6 

Therefore  the  real  proper  motion  of  C,  assuming  the  motion 
of  A  by  Auwers  to  be  correct,  is : 

0*095    m    297 ?o 

It  is  evident  from  the  only  other  measure  of  AB  that  neither 
of  these  stars  has  any  sensible  motion : 

1880.01  83?6  87*22  2n  P 

Remeasurement  of  Cc  will  give  hereafter  an  independent 
value  of  the  motion  of  the  larger  star. 

It  should  be  noted  that  the  proper  motion  of  £  Geminorum 
from  meridian  observations  is  very  uncertain : 

Auwers  0*017  in  204^4 
Newcomb  0.007  in  198.6 
Boss  0.009  m  207.8 


3817.     H  749.     (10.6... 12. 7) 
R.  A.  6"  58™  30"       Decl.  — 11°  8' 

A  and  B 
1909.071  ii9?o  14*02 

A  and  C  (10.8) 
1908.974  92?6 


9.071 
1909.02 


92.2 
92.4 


83"7i 
84.66 

84.18 


149 


Burnham:   Measures  of  Proper  Motion  Stars 


A  and  D  (n.o) 
1908.974             8s?3              136794 
9.071             85.0             137-36 

The  three  positions  by  2,  A  and  f5  (1830-1908)  give  for  the 
apparent  proper  motion  of  A  : 

0"038    in    258?2 

1909.02               85.1              137-iS 

A  and  E  (n.o) 
1908.974             71  °9             156724 
9-071             71-7             156.85 

A  and  C  (n.o) 
1908.898            253?o7            236704 
.900            252.93            236.01 
•974            253.00            235.10 

1909.02               71.8             156.54 

H  749  is  in  the  central  part  of  h  428.    In  his  observations  of 
the  latter,  Engelhardt  has  compared  A  with  the  three  brighter 
stars  by  differences  of  R.  A.  and  Decl.  from  which  we  have  : 
AC           1887.06           9i?8            8373           in 
AD           1887.06           85.1            135.7            m 
AE            1887.06           71.8           155.6            in 

The  differences  in  distance  do  not  suggest  any  real  change, 
as  they  would  be  accounted  for  by  the  method  of  transists. 

1908.92              253.00            235.72 

The  change  in  this  is  explained  by  the  proper  motion  of  A. 
1880.54           252?8o           237785           2n            Bl. 

As  these  two  positions  give  an  apparent  movement  in  A  of 
about  07078,  it  is  very  probable  that  the  7.8  m  star  has  a  con- 
siderable motion  of   its  own.     This  will   appear   from   later 
measures  of  the  two  faint  attendants. 

C  and  c  (n.6) 
1908.900            250?4                 3708 
.994            249.6                  3.12 

3852.    2  1024.    (8.3...  8.8) 
R.  A.  7"  2m  3'       Decl.  +  38°  19' 
A  and  B 

1908.95              250.0                 3.10 
Cand  d  (12.9) 

1908.900                 2OO?9                      22"54 

.994           202.4               22.80 

1908.074           3i5°5                 i"22 
9.091            313.0                 1.24 

1908.95             201.6               22.67 

1909.03             314.2                 1.23 
No  change  in  AB. 

A  and  C  (11.2) 
1908.900            Ii6?23            107729 
8.074            116.23            106.80 
9.091            115.83            107.23 

3873.    2  1032.     (7.0...  10.  3) 
R.  A.  7"  4™  50'        Decl.  +  48°  42' 

A  and  C  (9.0) 
1908.826            3I9°'5             I32''55 

1908.99             116.10            107.11 
The  other  measures  do  not  indicate  any  proper  motion  in  AB. 

.843            319-24            132.11 
.845            3I9-47             132.79 
.862            318.98            132.06 

1880.55           "5°44           107703           2n           BI. 

3857.    H  3930.    (9.  7...  10.  6) 
R.  A.  7"  2-  48'       Decl.  —  12°  59' 

1910.835             73?!                is':o6 
•933             73-0               15-14 

1908.84              319-21             132.38 

For  comparison  we  have  : 
1879.1            3i8?6            13371                          A.  G.Bonn 
1880.52           318.83           132.98           2n           Bl. 

C  is  DM  (48°)  1488 

1910.88               73.0               15.10 
H  3930  is  the  largest  star  in  h  3073.    No  other  measures. 

3858.    2  1025.    (7.  5...  7.8) 

3905.    52  Geminorum.    Ho  343.    (6.2...H.6) 
R.  A.  7"  7™  22'       Decl.  +  25°  6' 

1910.760           262^7               23788 
.780           266.8               23.83 
.856           264.5               23.89 

R.  A.  7*  2"  56'       Decl.  +  56°  o' 

A  and  B 
1008.898            135?!               24^26 
.900            134.5               24-10 
•974            135-0               24.16 

1910.80             264.7               23.87 

From  a  2O-year  interval   in  the  micrometer  measures  the 
proper  motion  of  the  large  star  from  meridian  positions  appears 
to  be  too  small.    The  four  positions  by  Ho,  Doo  and  P  give  : 
Measures      o7i74    in    I45?3 
Boss              0.105    'n     151.4 

1008.92             134.9               24.17 

A.  G.  Ber.     o.in    in    160.7 

150 


Burnham:   Measures  of  Proper  Motion  Stars 


3906.     2  1042.     (8.  3...  10.  3) 
R.  A.7h7m25'        Decl.  +  42°  21' 

A  and  B 
1907.788              40^8                i  i  "84 
7.791              40.5                11.87 

8.063                    41-6                      12.20 

8.689             41-2               12.00 

3927.     2  1052.     (8.5...  8.  7) 
R.  A.  7"  8m  52"       Decl.  —  10°  4' 

1906.796             2i?4               19777 
.964             21.6               19-95 

1906.88               21.5               19.86 
No  change. 

3943.    ^  1050.     (7.  3...  8.0) 
R.  A.  7"  iom  6'       Decl.  +  55°  8' 

A  and  B 
1908.788              20?  15              ip"33 
.804              20.13              19.33 
.843              19.30              19.36 

1908.08             41.0             11.98 

A  and  C  (13.  5) 

1907.791              78?5                24"2i 
8.785              80.0                24.49 
8.788             77-7               24.37 

1908.45               78.7               24.36 

No  measures  of  AB  since  1867.    The  faint  star  has  not  been 
previously  observed.     The   principal   star   is   DM  (42°)  1686. 
The  brighter  star  DM  (42°)  1685  is  in  the  field. 

3908.    2  1039.    (8.  8...  9.  5) 
R.  A.  7"  7™  27'        Decl.  +  63°  44' 

A  and  B 
1908.769            207?3                  3"i4 
.785            210.3                  3-Oi 
.788            208.6                  3.09 

1908.81                 19.86               i')..U 
No  change  since  1829. 

A  and  €(11.5) 
1908.785            226?  13             I97"30 
.788            225.77             197.40 
.843            225.97             197.48 

1908.81              225.96            197-39 

The  prior  measure  is  on  a  single  night  only,  and  change  is 
doubtful.    It  should  be  remeasured  later. 
1880.28           225?48            199738            in            Bl. 

3944.    2  1054.    (7.3..  .8.  5) 
R.  A.  7*  iom  10*       Decl.  +  35°  10' 

A  and  B 
1908.766           291  ?9               i8"72 
.785           291.4               18.53 
.788           292.1               18.64 

1908.78              208.7                  3-o8 

A  and  C  (8.5) 
1908.769            310^83             127758 
.785            311.27             127.54 
.788            310.80            127.67 

1908.78              310.97            127.60 

No  measures  of  AB  since  1869.    C  is  DM  (64°)  699. 
1880.56           3ii?35            I27'.'22           2n            Bl. 

3909.     2  1047     (7.  3...  9.  8) 
R.  A.  7"  7™  28'        Decl.  +  15°  58' 

B  and  C  (11.4) 
1908.769            297?4i              35791 
.788            297.80              35.83 
.843            298.25              35.73 

1908.78             291.8               18.63 

B  and  C  (9.2) 
1908.766           267^90             79740 
.785            268.03             79.26 
.788           267.95             79.8o 

1908.78              267.96              79-49 

No  change  in  AB,  and  probably  none  in  the  other. 
1880.54           267^15           79783           2n            Bl. 

3948.     47  Camelop.    2  1055.     (6.0...  10.5) 
R.A.7h9ra46'        Decl.  +  60°  7' 

1907.120                 329?I                         27l2 

.137            329.8                2.03 
8.728          329.6              2.03 
.769            334-9                  2.17 
.898            329.4                 2.02 

1908.80              297.82              35.82 

The  principal  star  appears  to  have  a  small  proper  motion. 
The  measures  of  the  third  star  will  show  whether  or  not  B  has 
any  movement. 

3915.     2  1048.     (8.  3...  10.  2) 
R.  A.  7"  7m  54'       Decl.  +  4°  25' 

1006.796            349°7                  5"66 
.964            350.1                  5.86 

1908.13              330.5                  2.07 

The  R.  A.  of  this  in  the  General  Catalogue  is  im  too  large. 
The  proper  motion  of  the  large  star  is  doubtful  : 
Auwers         o7o68    in    276^8 
Boss              o.on     in      49.6 

1906.88              349.9                 5.76 
No  change. 

151 


Burnham:  Measures  of  Proper  Motion  Stars 


3962.    2  1051.    (6.5...  8.6) 
R.  A.  7"  I2m  7'       Decl.  +  73°  19' 

A  and  C  (6.7) 
1912.755            8z?i              31^34 
•791             82.8              31.85 
•793             82.7               31.39 

The  only  other  measures  of  this  are  uncertain  in  distance  and 
angle  : 

1879.33           288?4S           73^70           in           Bl 
1879.78           286.07           74.72            in            Bl. 

A  and  B  have  a  common  proper  motion,  if  there  is  any 
motion. 

Auwers         0:048    in    226?4 
A.  G.  Hels    0.062    in    216.8 
Boss             0.038    in    177.4 

3977.    2  1070.    (8.  2...  9.2) 
R.  A.  7"  13™  31-       Decl.  +  34°  15' 

A  and  B 
1908.769            322?9                  i?74 
9.071            322.8                  1.83 

1912.78               82.5               31.53 
C  and  D  (13.0) 

I9I2-7SS            I24°93             46:36 
.791            125.62             46.09 
•793            125-93              46.56 

1912.78              125.49              46.34 

No  other  measures  of  D.    The  large  stars  have  a  common 
proper  motion  : 
Bossert                0:059    in    250^3 
Greenwich           0.053    in    247.8 

3965.    2  1069.    (8.3...  8.3) 
R.  A.  7*  I2"1  32'       Decl.  —  13°  29' 

1907.022            I93?6               25:23 
7.137            194-7               25-08 
9.170            104.1               25.36 

1908.92              322.8                  1.78 

A  and  C  (10.7) 
1908.766            I22?oo             87:16 
.769            121.66             87.16 
.788            122.43             87.44 

1908.77             122.03             87.25 

There  is  no  sensible  proper  motion  in  AB  : 
1880.55           I22?38          87:91           2n           Bl. 

3991.    2  1071.    (8.2...  10.2) 
R.  A.  7"  14™  22-       Decl.  +  45°  14' 

1911.835              I3?9               17:01 
12.046             14.5               16.93 
12.066             15.5               16.98 

1907.78             194.1               25.22 
No  change. 

3971.    8546.    (8.5...  8.6) 
R.  A.  7'  13-  4'       Decl.  +  31"  42' 
A  and  B 

I9II-755                358?  10                  83T37 

.835           357.83             83.46 
-870           358.50             83.22 

1911.98               14.6               16.97 

From  the  measures  by  2,  A,  Doo  and  0  (1829-1911)  we  have 
for  the  proper  motion  of  A  : 
0:054    in    255?8 

3994J.     56   Geminorum.     (6.0...  13.0) 
R.  A.  7"  14™  52"       Decl.  +  20°  40' 

1912.810           203?6               16:91 
.867           203.3               17-39 

1911.82             358.14             83.35 

A  and  C  (8.6) 
19"  -755             6>?57            144:05 
.835             67.63            143.52 
.870             68.30            143-93 

1911.82               67.83            143.83 

If  the  measures  of  1825  are  substantially  correct,  there  has 
been  considerable  change  from  proper  motion;  later  observa- 
tions will  determine  this. 

3973.     19  Lyncis.    2  1062.     (5.  3...  6.  6) 
R.  A.  7*  13"  4'       Decl.  +  55°  30' 

B  and  C  (n.o) 
1908.766           287?03             74:20 
.769           287.46             74.52 
.788           287.60             74.31 

1912.84             203.4               17.15 

The  only  other  measures  are  of  recent  date: 
1901.08           205?!            17:75           2n            fj 

The  observations  should  be  continued  for  the  proper  motion 
of  the  bright  star. 
Measures      o!"o67    in    248?! 
Auwers         0.075    in    263.9 
Boss              0.069    >n    241.3 

1908.77             287.36             74.34 

152 


Burnham:   Measures  of  Proper  Motion  Stars 


4001.    02(APP.)84.    (7-0...  7-3) 
R.  A.  7"  I5m  21'       Decl.  +  56°  48' 
A  and  B 

B  and  C  (9.5) 
1906.796           322?6               20*22 
7.022           322.0               20.23 
7.102           323.3               20.37 

I9II-755            324°97            "4"i5 
.835           325-07            "3-57 
.870           325-30            113-95 

1906.97             322.6               20.27 
No  other  measures  since  1867. 

1911.82             325.11            113.89 

B  and  C  (12.3) 

I9IL755            I93°63              37*43 
-835            194-33              37-45 
.870            194-83              37.64 

4051.    H  3964- 
R.  A.  7'  19™  5  1  '       Decl.  —  20°  47' 
1911.796           347°7                4*52 

1911.82              194.26              37.51 

One  of  these  large  stars  appears  to  have  a  small  proper 
motion.    I  have,  therefore,  connected  a  faint  star. 

4012.    2  1075.    (8.0...  10.  o) 
R.  A.  7"  16™  37'       Decl.  +  63°  14' 

A  and  DM  (63°)  708  (9.3) 
1910.701            333°33            223*27 
•835            333-38            223.28 

No  evidence  of  material  change.    As  described  by  Herschel, 
the  components  of  H  3964  are  among  the  brightest  stars  of 
h  3083.    The  latter  is  given  of  the  8th  class. 

4059.    63  Geminorum.    Sh  368. 
R.A.7"20m37'       Decl.  +  21°  42' 

1908.843           323°op             42*93 
.862           323-05             42.65 
.884            323-12              43-33 
.898            323-23              42.95 

•895            333-22            223.59 

1908.87              323.12              42.96 

1910.81              333-31            223.38 

Evidently  the  principal  star  has  no  sensible  proper  motion  : 
1880.57           333°2i           223*51           2n           Bl. 

4045.     ^  1087  and  1088.     (7.0...  9.0) 
R.  A.  7"  19"-  15'       Decl.  +  14°  20' 
A  and  B 

It  is  probable  that  the  companion  has  the  same  proper  motion 
as  the  large  star. 
Auwers         0*122    in    214?! 
Boss             0.133    in    203.5 

A  and  C  (10.5) 
1909.760           2i8?75            145:70 
.818           218.63            145.69 
.821            218.33            146.20 

1909.744            I95?9               11*26 
.821            194.8               ii.  21 
•838            I95-I               10.97 

1909.80             218.57            145.86 
No  other  measures  of  C. 

1909.80             195.3               "-IS 
A1  and  B1  (8.2.  ..ii.  5) 
1909.744             40?6               21*28 
.821             40.2               21.08 
.838             41.1               21.17 

4070.    O2(APP.)8s.    (7.3...  8.2) 
R.  A.  7"  21™  23'       Decl.  +  24°  54' 
A  and  B 

O                                           £                                          O 

191  I.  755                                       58*46 

A  and  A1 

.775              24?70              58.30 
.835              24.73              58.49 

.821            238.30            112.62 
.838           238.27            112.58 

1911.79               24.71              58.42 
Comparing  this  position  with  that  of  A  in  1875,  we  have  the 

1909.80             238.26            112.52 
No  sensible  relative  motion. 

4049.    ^  1090.    (7.0...  8.0) 
R.  A.  7"  19™  28'       Decl.  +  18°  45' 

A  and  B 
1906.796             97?8               60*57 
7.022             98.0               60.49 
7.102             97.5               60.73 

proper  motion  of  A  : 
0*082    in     i6l?4 

B  is   DM  (24°)  1666,   where   the  magnitude   is   given  9.2. 
There  is  little  probability  that  the  small  star  has  any  move- 
ment which  would  affect  this  result.    This  will  appear  from 
future  measures  of  a  much  fainter  star: 

A  and  a  (11.4) 

I9".755            I3i°95             34"4i 
•  775             I3L47              34-22 
.835            131-63              34-53 

1906.97               97.8               60.60 
I 

1911.79              131.68              34.39 
53 

Burnham:   Measures  of  Proper  Motion  Stars 


4098.    2  1104.    (6.  7...  8.  3) 
R.  A.  7'  23™  55'       Decl.  —  14°  44' 

A  and  C  (11.5) 
1910.  148            i87?98             20730 
.164            188.40             20.26 
•933            187.10             20.58 

4121.     H  2392.     (10.5...  ii.  4) 
R.  A.  7"  26'"  56'        Decl.  +  71°  56' 

1910.701             i67?3                26701 
•739            167.4                26.38 

1910.72              167.3                26.19 
H  2392  is  in  h  452;  mostly  small  stars.    No  other  measures. 

4130.    O2  175.     (6.0...  6.  6) 
R.A.7b27m3i'       Decl.  +  31°  13' 

AB  and  C  (10.0) 
1908.689            194:70             81:55 
.709            194.85             81.53 
.728            194.18             81.46 

1910.41              187.83             20.38 

A  and  D  (12.0) 
1910.148               7?82             40^77 
.164               7.30             41.23 
•  933               6.70             41.09 

1910.41                 7.27             41-03 

The  apparent  motion  of  C  with  reference  to  A  is  only  about 
)To3  annually,  which  may  be  explained  by  errors  of  observation, 
rhis  seems  to  be  a  system  of  the  61  Cygni  type,  but  with  three 
:omponents.    The  proper  motion  of  the  group  from  the  meas- 

1908.71              194.58             81.51 

ures  of  D  (1882-1910)  is: 

Measures  of  AD  0^334    in    217^3 

Porter  0.312    in    216.1 

Paris  0.327    in    209.5 

4103.    "S.  1098.  (9.0... 9.0) 

R.  A.  7"  24°  27'  Decl.  +  59°  49' 


1907.120 
.137 
.140 


286.1 
286.4 


26"93 
26.95 

27-31 


1907-13  285.8 

No  other  measures  since  1868. 


27.06 


4111.    2  1109.    (8.8... 8. 8) 
R.  A.  7"  25™  47'       Decl.  —  o°  16' 

A  and  B 
1907.102  I9?o  2*90 


.120 
•  137 


16.4 
18.7 


3-14 
3.08 


1907.12  18.0  3.04 

A  and  C  (n.o) 

1907.102  3o6?8  26^89 

.120  307.1  27.03 

.137  306-8  26.87 


1907.12  306.9 

No  recent  measures  of  either. 


4118.    2  iii2  rej.     (7. 8... 10. 5) 
R.  A.  7"  26™  21'       Decl.  — 8°  37' 
1910.148 

.206 


112. 6 
112. 2 


23T86 
23.64 
23.24 


1910.17         II2.4         23.58 

The  small  star  appears  to  be  moving  with  the  other. 
Radcliffe       0^167    in    206^3 
Porter  0.188    in    217.3 


The  only  other  measures  are  those  by  Glasenapp  given  in 
the  General  Catalogue.  For  the  proper  motion  of  the  close 
pair  we  have  : 

Auwers         0^046    in    294?3 
Boss  0.032    in    268.2 


4152.     H  3295- 

This  is  the  same  as  "S.  1118  rej.  (No.  4148).  The  nebula  re- 
ferred to  by  Herschel  is  h  457  which  is  in  the  field  with,  and 
closely  following,  the  7.3  m  star,  DM  (39°)  1979.  It  is  too 
diffused  for  accurate  measurement. 


4159.     O2  (App.)  87.     (7.0. .  .7.0) 
R.  A.  7"  30™  29'       Decl.  +  42°  44' 

1908.804  I78?38  64"39 

.826  178.63  64.50 

.846  178.78  64.14 

1908.83  178.60  64.34 

Distance  apparently  decreasing.     Dembowski   found  65:51 
in  1875. 

4162.    ^  1120.    (6. 5... 9. 5) 
R.  A.  7"  30m  32'        Decl.  — 14°  13' 

1910.933  36°  5  *9"77 

11.008  38.5  19.74 

11.107  36.4  19-47 


1911.02  37.1  19.66 

No  material  change.     This  and  several  other  doubles  form 
a  portion  of  h  459  (=  h  3088). 

4164.    70  Geminorum.    P  200.     (5. 9. ..n.o) 
R.  A.  7"  30™  40'       Decl.  +  35°  19' 

A  and  B 

1911.870            I9o?8o  100*57 

12.008            190.55  99.8i 

12. on            190.15  100.43 

12.046            100.55  99-97 


1911.98 


190.51 


100.20 


154 


Burnham:   Measures  of  Proper  Motion  Stars 


A  and  C  (10.0) 
1911.870              99?3o            i6o?47 
12.008              99.15             161.45 
12.046              99-10            160.83 

A  and  G  (8.5) 
1908.884                l?28              84^21 
8.939               0.92              84.15 
9.164                1.30              84.00 

1911.97                99.18            160.92 

From  five  positions  of  AB  by  A,  Doo  and  P  (1876-1911)  we 
have  for  the  corrected  proper  motion  of  the  large  star: 
Measures        o"os8    in    44?o 
Auwers           0.029    in    35.5 

1909.00                  1.17              84.12 

A  and  H  (10.0) 

1909.164            268?5O            I49''9i 
.170            268.30            149.62 
.186            268.55             149.78 

Boss                0.043    in    65.3 

It  should  be  noted  that  Dembowski's  measure  of  the  other 
distant  companion  is  of  A  and  CD,  and  not  A  and  C;  and  in 
my  measure  in  1880,  the  distance  i6o"47  should  read  i6i"o4. 
About  2°'  np  70  Ceminorwn  is  h  456.    It  is  round  and  small, 
but  bisection  not  very  exact.    The  measures  connect  it  with  a 

1909.17              268.45             149-77 

A  and  I  (7.5) 
1908.939             26?  10            i64':88 
9.164             26.47            165.03 
9.170             26.23            165.24 

9.0  m  star  in  the  field. 

DM  (35°)  1658  and  A  456 
1911.870            249?4              io6"s 
12.046            247.1              108.5 

1909.09               26.27            165.05 

A  and  J  (8.8) 

1909.  186           354-55            i96"9° 
.206           354-04            196.76 

1911.96              248.2              107.5 

.227            354-25            196.29 

4168.     H  5470 
R.  A.  7n3im5*        Decl.  —  14°  13' 

Herschel  said  this  was  not  identical  with  2  1120,  and  it  could 
not  be  if  his  description  was  correct,  but  probably  that  was 
erroneous,  and  it  now  appears  to  be  the  same  as  'S,  1121,  with 
error  in  the  estimated  angle.    It  is  in  the  central  part  of  h  459. 

4169.     2  H2i.     (7.  2...  7.  5) 
R.  A.  7"  3im  5'        Decl.  —  14°  13' 
A  and  €(12.3) 

1908.939            i33°45              I7"76 
9.164            133-57              17-40 
9.170            132.05              17.42 

1909.21              354-28            196.65 

2  1  121  is  the  principal  star  of  h  459.    Some  of  the  other  stars 
of  the  cluster  were  remeasured  in  the  hope  of  finding  a  small 
star  with  some  proper  motion.    So  far,  the  differences  from  the 
results  found  by  Glasenapp  are  no  larger  than  the  probable 
errors  in  the  average  set  of  measures.    The  observations  by 
Glasenapp  are  : 

AC           1893.19           I32?99             i6"i7            in 
AD           1893.18             98.06             65.07           2n 
AE           1893.18           238.88             72.34           2n 
AF           1893.18           3I5-I4             84.55           2n 
AG          1893.18               0.80             84.63           2n 
AH          1893.18           268.33            150.26           2n 
AI            1893.18             26.00            165.23           211 
AJ           1893.19           354-o6           196.31            zn 

4183.     H  765.     (8.6...  11.  o) 

1909.09              133.02              17-53 

A  and  D  (9.9) 
1908.884             o8?67             64"59 
8-939              98.58              64.47 
9.164              98.74              64.25 

R.  A.  7"  32™  30'        Decl.  +  27°  o' 
A  and  B 

I9II.I04                 2I4?2                      22'/93 

.142            213.5                23-48 
.145            213.5                23.39 

1909.00                98.60              64.44 

A  and  E  (ii.i) 
1908.884            238^57              72*26 
8.939            238.28              72.24 
9.164            238.74              71.96 

1911.13              213.7                23.27 

A  and  C  (n.o) 
1911.104            298?!                4i"i6 
.142            296.4                41.14 
.145            296.8                40.82 

1909.00              238.53              72.15 

A  and  F  (11.3) 
1908.939            3i5°o8              83:'i9 
9.170            315.45              83.80 
9.186            315-55              83.64 

1911.13              297.1                41.04 

The  proper  motion  of  A  from  meridian  observations  seems 
to  be  much  too  large.     From  the  measures  of  the  two  com- 
panions (1901-1911)  the  motion  of  that  star  is: 
Measures      o'/o64    in     i64?5 

1909.10              3I5-36              83.54 

Porter           0.163    in     181.9 

155 


Burnham:   Measures  of  Proper  Motion  Stars 


4186.     24  Lyncis.     H  2405.     (S.O...9-5) 
R.A.7»32m5i'       Decl.  +  58°  59' 

1911.104           3i9°93             S4"92 
.107           320.23             54.83 
.142           320.20             54.80 

A  and  DM  (3°)  1778 
1906.694                      ADecl.  52^89 
6.966                                  52.77 
7-oo6                                  52.49 

1906.98                                   52.72 
The  A.  G.  positions  give  54?4  (1881.0). 

4247.    Schj  8.    (8.5...  9.0) 
R.A.7"39m3o'       Decl.  +  14°  i' 

1907.137             25?7                2:13 
.197             28.6                2.09 

1911.12             320.12             54.85 

The  interval  is  too  short  for  a  high  degree  of  accuracy  in  the 
proper  motion.    Later  measures  will  give  a  better  value: 

Measures            oro66    in    213^7 
Groombridge       0.058    in    212.8 
Boss                    0.068    in    206.3 
Auwers               0.077    in    217.7 

4210.    SchJ7.    (8.5...  9-5) 
R.  A.  7*  35™  i'       Decl.  +  9°  29' 

1910.780           345°4i             30?02 
•  735            345-88             30.45 
•933           345-17             30.13 

1907.17               27.1                 2.  ii 
Unchanged  since  1875. 

4250.    X  1138.    (6.2...  7.0) 
R.  A.  7'  39™  58'       Decl.  —  14°  24' 

A  and  B 
1908.939           338?2               16:72 
9.164           339.0               16.78 

1910.82              345-49              30.20 

No  other  measures,     h  462  is  closely  following;  has  no 
central  condensation  for  accurate  setting  of  the  wires. 

Schj  7  and  h  462 
1910.83       AR.  A.  +  7o?2       A  Decl.  +  21075 

h  462  and  DM  (9°)  1750  (9.5) 
1910.83            143°2              200?5 

The  R.  A.  of  A  462  is  doubtful  in  Dreyer.    From  the  compari- 
son with  Schj  7  we  have  for  the  place  of  h  462  : 

R.A.7*35™5!2    \l86o 
Decl.  +  9°34'2"SJ 

4227.    2  1134.    (8.0...  11.  2) 
R.  A.  7'  37"  13'       Decl.  +  3°  47' 

A  and  B 
1906.964            I46?3               io?i7 
6.966            145.4               10.19 
7.006            146.8               10.13 

1909-05             338.6               16.75 

A  and  C  (9.9) 
1908.884           228?ss           100:67 
8.939           228.37            100.46 
9.164           228.41           too.  ii 

1909.00            228.44           100.41 

The  only  other  measures  of  C  are  those  given  in  Part  II 
of  the  General  Catalogue.    The  change  in  distance  corresponds 
to  a  proper  motion  in  A  of  about  o?o6. 
The  planetary  nebula  h  464  is  about  3^™  preceding.    My 
former  measures  comparing  the  central  star  with  one  in  the 
nebula,  and  another  following,  are  given  in  Pub.  Lick.  Obsy. 
II,  p.  162. 

It  464  (central  star)  and  star  s 
1909.186           2ii?6               15:43 

h  464  (central  star)  and  star  / 
1909.186            I27?2                49"34 

4286.    O2(App.)89.    (6.  3...  7.0) 
R.A.7B43m29"       Decl.  +  31°  55' 

1908.102             82?98             76:69 
.326             82.68             76.84 
.689             82.78             76.79 

1906.98             146.3               10.  16 
Common  proper  motion. 

The  motion  of  A  is  given  : 
A.  G.  Alb.     o"o97    in    is8?2 

A  and  C(io.6) 
1906.964           346?9               83:48 
6.966           346.8               83.76 
7.006           346.7               83.42 

1908.37               82.81             76.77 
No  change  since  1875. 

1906.98             346.8               83.55 

156 


Bitrnham:   Measures  of  Proper  Motion  Stars 


4296.    H  431.    (9.6...  9.  6) 

R.A.7°44m43'        Decl.  +  30°  7' 

1908.102             S3°6                5''87 
11.870             51.4                6.04 

4345.     H  433.     (11.  7...  ii.  7) 
R.  A.  7"  50™  3'       Decl.  +  23°  58' 

1910.739             53°8                7*30 
.780             50.2                 7.50 

1009.98                52-5                  5-95 
No  other  measures. 

4304.    2  1153-    (9-0...  9-  2) 
R.  A.  7"  4Sm  54'       Decl.  +  12°  20' 

1910.76               52.0                7.40 

No  description  in  H.    This  is  in  the  right  place,  and  is  doubt- 
less the  one  referred  to.     About  io'  n  of  H  433  is  h  473; 
brighter  in  the  center,  but  with  no  definite  nucleus. 

h  473  and  star  10.6  m 

1910.739                l6l?3                  202?! 
.780                l6l.3                  203.1 

1907.118           357-8               19-57 
.120            357-0                19-77 
-997            357-1                19.72 

1910.76                    l6l.3                    2O2.6 

1907.41              357-3                19-69 
No  measures  since  1868.    Fixed. 

4324.    2  1155-    (8.0...  10.  7) 
R.  A.  7"  47m  io'       Decl.  +  26°  29' 

4357.    2  1160.    (8.0...  ii.  2) 
R.A.7h5im4i'       Decl.  +  57°  16' 

1907.848             32?5                 5"92 
8.769             32.7                6.41 
8.898             33.0                6.24 

1907.788            342°5                I5"73 
10.971            342.9                16.09 
11.104            34I-2                15-78 

1908.50               32.7                 6.19 
No  other  measures  since  1867. 

1909-95              342.2                15-87 
No  measures  since  1867.    Perhaps  a  little  change  in  distance. 

4341.    2  1158.     (8.8...IO.O) 
R.  A.  7"  49™  26"        Decl.  +  22°  12' 

4359.     Ursae  Maj.  2.     Sh  86.     (6.0...  7.0) 
R.  A.  7"  sim  46'       Decl.  +  63°  25' 

1007.120             8i?3               48*39 
.137             81.3               48.26 
.140             81.5               48.84 

A  and  B 
1907.788            332?7                  7*42 
.845            334-4                 7-44 

1907.13               81.4               48.50 

The  proper  motion  of  the  principal  star  (Groombridge  1386) 
is  : 

1907.82              333-5                  7-43 
A  and  C  (12.9) 

1907.772            258?3                i8'/39 
.788            257.5                19-20 
•845            257.3                i«-73 

Greenwich     o?oi8    in    2I5?4 
Boss              0.021     in     189.1 

B  is  Groombridge  1388: 
Greenwich      0^039    in    72^3 

1907.80              257.7                18.77 

In  the  General  Catalogue  the  angle  of  AC  is  printed  268?8; 
it  should  be  256?8. 

4342.     Pin  92. 
R.  A.  7"  49™  28'       Decl.  —  16°  20' 
1909  170           269°8                2"84 

4361.     14  Cants  Minoris.    Sh  87.     (5.  5...  9.0) 
R.  A.  7"  52™  8'        Decl.  +  2°  33' 

A  and  B 
1906.906             75?5               86^00 
.928             75-6               85.88 
.964             75-7               86.01 

.186           272.1                 2.86 

1006.93               75-6               85.96 

1909.18             270.9                2.85 

The  measures  of  this  pair  given  in  Part  I  of  the  General 
Catalogue  belong  to  Hn  91  (No.  4217).    The  early  position  of 
Hn  92  is  : 

A  and  C  (9.1) 
1906.906            isi?o             117^46 
.928            150.9             117.61 
.964            152.1              117-27 

1888.24           271  ?2           2"73           3n            Com. 
ii                                                                                             i 

1906.93              151.3              117-45 
57 

Burnham:   Measures  of  Proper  Motion  Stars 


A  and  D  (12.0) 
1906.906  2&4?8 

.928  284.7 

.964  284.7 


120.58 
119.76 


1906.93 


284.7 


A  very  accurate  value  of  the  proper  motion  of  A  can  be 
found  from  the  continued  measures  of  the  three  companion 
stars.  C  is  DM  (2°)  1834. 

The  proper  motion  of  the  principal  star  is : 

Auwers         0^203    in    294^8 
Porter  0.209    in    298.9 

Boss  0.195    in    296.6 


4363.    2  ii68.    (8.0... 11.8) 
R.  A.  7"  52"  22*       Decl.  +  5°  57' 


1906.906 
.924 
.966 


217.7 
218.6 


6.38 
6.00 


1906.93  218.0 

Perhaps  a  little  change  in  the  angle. 


6.15 


4365.    Z  1165.    (8.0...  10.  3) 

R.A.7»52"4i'       Decl.  +  54°  57' 

AB  and  C  (10.8) 


1910.835 
.856 


277-53 


216.89 


1910.85 


277.58 


216.92 

Evidently  the  close  pair  has  no  sensible  proper  motion. 
1881.03  277?5i  216^57  2n  Bl. 


4366.    2  1159  rej.     (7. 4... 9.9) 
R.  A.  7"  52™  45'       Decl.  +  72°  8' 


1910.856 
.895 
•931 


96?o 

94-9 
96.0 


3S"23 
35.29 
35.27 


1910.89  95.6 

Never  previously  measured. 


35-26 


4475.    2  1195.    (8. 3... 10. 8) 
R.  A.  8"  5™  io'       Decl.  +  30"  49' 

A  and  B 

1909.821  332?o  8rSo 

331.8  8.94 

8.78 


10.093 
10.107 

1910.01 


331.9 
331-9 


8.84 


A  and  C  (13.0) 
1910.093  iso?8 

.128  150.9 


23.15 


1910.11 
Change  in  AC? 


150.8 


23.36 


4477.     t,  Cancri. 
R.  A.  8"  5m  20'        Decl.  +  18°  i' 


C  and  (3  1243 


1909.782 
09.859 
10.107 
10.109 
10.148 
10.167 


A  Decl.  +  I03"7i 
103.20 
103.09 

103.51 
102.96 
102.78 


1910.03 


+  103.21 


There  is  nothing  in  these  measures,  which  were  commenced 
in  1891,  to  indicate  any  variable  motion  in  C.  Recent  spectro- 
scopic  observations  of  that  star,  made  at  the  Yerkes  Observa- 
tory, give  the  same  result.  The  prior  measures  are  all  given  in 
Part  II  of  the  General  Catalogue. 


4501.    2  1193.    (6.0... 9.0) 
R.A.8h7m28'        Decl.  +  72°  47' 

A  and  B 
I9".755  87?os 


11.950 
12.008 


86.80 
87.00 


43"69 
43.40 
43.50 


1911.90 


86.95 


43-56 


The  proper  motion  given  in  the  General  Catalogue,  Part  II, 
p.  1071,  belongs  to  another  star.  The  movement  of  A  from 
meridian  position  is  given : 

Auwers         0^054    in    202?7 

Boss  0.027    in     173.4 

Gr.  (1900)     0.024    in     199.2 

The  measures  of  the  small  star  by  2,  A  and  P  (1831-1911) 
give  a  different  direction : 

o"o2o    in    29?6 

There  is  no  probability  of  any  motion  in  the  companion  which 
would  substantially  change  this  result;  but  I  have  connected 
a  12  m  star  for  future  comparison. 


I9".755 
•  950 


B  and  C 

2?57 
2.37 


S4*9« 

54-Si 


1911.85 


2.47 


54-71 


4506.    H  2435. 
R.A.8"7m45"       Decl.  — 5°  24' 

1911.796 
12.066 


204?  r 
207.1 


7-33 


I9".93  205.6  7.20 

II  2435  is  in  h  496.    Only  recent  measures. 


Burnham:   Measures  of  Proper  Motion  Stars 


4529.     P  Cancri.    [3  1065.     (3.7--.I3-7) 
R.  A.  S"  ID"'  o*        Decl.  +  9°  33' 

A  and  B 
1910.203            294?o                29''  24 
.206            293.7                29.21 
.260            294.5                29.21 

This  is  confirmed  by  the  relative  positions  in  A.  G 
Lalande.    As  a  further  check  I  have  connected  a  very  faint 

A  and  a  (13.  5) 
1911.142            2i2?3                34"i5 
.145            213.3                33.83 

and 
star: 

faint. 

I9II.I4                   212.8                      33.99 

4565.     02(App.)92.     (7.5...  9.0) 
R.  A.  8"  14'"  14'        Decl.  +  57°  48' 

191  1  .  104            i8o?oo              57"43 
.107             180.55              57-44 
.142             179.80              57.86 

1910.22              294.1                29.22 
le  small  star  is  moving  in  space  with  the  other. 

A  and  DM  (9°)  1922 
1875             A  R.  A.  69?  7        A  Decl.  7o'/77        A.  G.  Leip. 
1910.16                    69.5                     70.15        P 

A  and  DM  (9°)  1926 
1875             AR.  A.  ioo?4        ADecl.66?6        A.  G.  Leip. 
1910.16                     100.4                     66.4        P 

lie  proper  motion  of  (5  Cancri  is  : 
Auwers         o"o/4    in    237?2 
Newcomb      0.074    in    224.6 
Boss              0.075    in    223.8 

4531.     Z  1211.     (8.  7...  9.  2) 
R.  A.  8"  iora  23'        Decl.  +  39°  22' 
A  and  DM  (39°)  2084  (9.3) 

1910.128            I3i?20              95"8o 
.145             131-41              95-68 
.148            131-23              95-91 

1911.12              180.12              57-58 
Perhaps  a  little  change  in  angle. 

4588.     O2  191  rej.     (7-0...  8.  3) 
R.  A.  8"  17™  52'        Decl.  +  20°  32' 

1911.950            190?  73              37"39 
12.008            191.28              37.43 
12.046            191.20              37-40 

1912.00              191.07              37-41 
No  change  since  1867  ;  h  504  is  about  20'  nf;  small  and 

4597.     4>  Cancri.    8566.     (6.o...n) 
R.  A.  8"  19™  ios        Decl.  +  28°  if 

1910.777              20?ss             I29"38 
10.931              20.75             129.46 
ii.  088              21.03             129-25 

1910.14              131.28              95-8o 

rom  the  Astrografhic  Catalogue  we  have  : 
1894.30            130^9           92"34           Donner. 

hercfore  from  the  two  positions  the  proper  motion  of  A  is  : 
o"2O9    in    322?! 

there  is  an  error  in  Porter  of  the  sign  in  declination,  his 
tion-angle  would  be  325?4. 
Porter      o"237    in    214^6 

4550.     O2(App.)9i.     (6.  6...  7.  5) 
R.  A.  8"  a1-  50'        Decl.  +  35°  25' 

A  and  B 
1911.104            221^58              92?  10 
.107            221.58              92.02 
.142            221.  10              91.97 
.145            221.96              91.89 

1910.93                20.78            129.36 

If  the  position  by  South  in  1825  is  substantially  correct,  the 
proper  motion  of  0  Cancri  should  be  : 
o"o96    in     I90?4 

The  proper  motion  of  the  large  star  from  the  star  catalogues 
is: 
Auwers         o'/i33    in    2o8?5 
Boss              0.135    in     193.1 

4600.    H  VI.  109.     (6.0...  10.  2) 
R.  A.  8"  19™  29'        Decl.  +  7°  57' 

ipii-775            342?4                3i"47 
.796            342.0                31.64 

-942            342-3                31-37 

1911.12              221.55              92-00 

rom  the  three  positions  (1875-1911)  we  have  for  the  appar- 
motion  of  A  : 
o"i8s    in    39?4 

1911.84              342-2                31-49 

Further  measures  are  needed  for  the  proper  motion 
which  is  obviously  very  small.    From  meridian  positions 
Boss      o"o43    in    263  ?4 

of  A 

159 


Burnham:   Measures  of  Proper  Motion  Stars 


4609.     o  Ursae  Majoris.    fJ  1067.     (3.  4...  15.  2) 
R.  A.  8"  2om  i/'       Decl.  +  61°  / 

A  and  C  (10.0) 
1907.197            151?!              143^28 
.217            150.8             143.22 

4658.    S  569.    (8.  i...  9.  2) 
R.  A.  8"  25™  13'        Decl.—  25°  38' 

1909.167            339?o7              29'.'37 
•170            338.43              29.14 
•  186           339-15             29.14 

1907.21              150.95            143.25 

A  and  D  (10.7) 
1907.197            207?3              i75:'2o 
.217           207.4             175.28 

1909-17             338.88             29.22 

My  measures  indicate  a  proper  motion  in  declination  for  one 
of  the  stars  of  about  o"i.    The  distance  by  South  in  1825  is 
much  too  large. 

1907.21             207.35            175-24 

These  positions  compared  with  a  mean  of  the  measures  by 
Engelhardt  give  for  the  proper  motion  of  the  large  star  : 
Measures  of  C    0*230    in    226?5 
Measures  of  D    0.156    in    258.0 

These  measures  should  be  continued.     The  motion  of  the 
large  star  from  the  catalogues  is: 

4660.     S  1240.     (7.  2...  10.  2) 
R.  A.  8"  25™  37'        Decl.  +  33°  50' 

A  and  B 
1908.898             74°6               24*85 
8.900             74.7               24.77 
9-093              76-4                24.70 

Auwers         0*176    in    229^8 
Newcomb     0.162    in    225.7 
Boss             0.166    in    226.8 

4614.    H  448.    (8.  7...  11.  6) 
R.  A.  8"  201"  33-       Decl.  +  21°  51' 

1908.96                75.2                24.77 

The  four  positions  of  AB  by  2,  A,  Doo  and  0  (1830-1908) 
give  for  the  proper  motion  of  A  : 

0*042    in    288?! 

A  and  C  (10.0) 
1908.882           245?90             51*75 
.898           245.80             51.39 
.900           245.70             51.16 

lyiy.ojo              324-7                  3'-27 
•859              325.5                  3I.o8 
•936              324.8                  31.59 

1908.89             245.80             51.43 
A  comparison  of  this  with  the  measure  of  1898  by  Doolittle 

1909.88                325.0                  31.31 

No  other  measures.    The  object  in  the  field,  h  506,  referred 
to  by  Herschel,  was  not  noticed. 

4818.    H2445-    (8.5...  12.9) 
R.A.8h2om43>       Dec!.  +  52°  27' 
IOO7  I4O              1  1;8°  T                  A  A  "  oo 

gives  practically  the  same  proper  motion  for  A. 

4677.    2  1245.    (6.0...  7.0) 
R.  A.  8"  29™  29'        Decl.  +  7°  2' 

A  and  C  (10.8) 
1910.164            "9°5o             93*08 
.184            119.47             93-i8 
.203            119.48             93.26 

8-063       157.7         43.74 
8.788       158.2         43.72 

1910.18             119.48             93.17 
A  and  D  (10.7) 

1908.00        158.0         43.89 

No  other  measures.     The  principal  star  is  given  a  small 
proper  motion  : 

1910.164            282?oo            117*48 
.184           282.07            117.05 

--'<M               281.82               116.62 

A.  G.  Harv.     0*041    in    o° 
4648.    2  1236.    (8.0...  8.5) 

I9IO.I8                 281.96               "7.05 

A  and  E  (9.  7) 
1910.  164           2io?8o            129*05 
.184           210.77            129.28 
.203           210.48            129.23 

R.A.8"23m57'       Decl.  +  32°  20' 

1907.102            ii3?s               36-48 
7-140            114.2               36.58 
8.288            114.0               36.55 

1910.18             210.68            129.19 

The  time  interval  of  17  years  should  be  extended  for  the  best 
result.    From  these  measures  we  have  for  the  proper  motion 
of  A: 

1907-51              II3-9               36.54 
One  of  these  stars  has  a  small  proper  motion  of  0*026  in 

AC       R.  A.  —  0:127       Decl.  —  0*109 
AD                    0.214                    0.139 
AE                    0.165                    0.085 

—  0.169                —  o.ni 

1'  >< 


Burnham:   Measures  of  Proper  Motion  Stars 


Therefore  the  proper  motion  of  the  large  star  is : 
o''2O2    in    236^7 

Other  values  from  meridian  positions  are : 
Porter  0^172    in    230^9 

Boss  0.195    in    219.8 

4710.    ^  1254.    (6. 5... 9-0) 
R.  A.  8"  33™  29'        Decl.  +  20°  6' 

A  and  B 
1906.906  54?8 


7.006 

7.022 


54-4 
53-4 


20"22 
19.99 
20.38 


1906.98  54-2 

A  and  C  (8.5) 


1906.906 
7.006 
7.022 


342.2 
341.8 


62.88 
62.89 


1906.98  342.0  63.05 

A  and  D  (9.0) 

1906.906  43°4  82750 

7.006  43.2  82.53 

7.022  43-7  82.37 

1906.98  43-4  %2-47 

No  other  measures  of  the  small  stars,  C  and  D. 
catalogues  the  motion  of  A  is  : 

Boss  o"o42    in    238?o 

A.  G.  Ber.    0.056    in    270.0 

4727.     2  1261.     (7.  5...  10.  2) 
R.  A.  8"  35™  i*        Decl.  —  IIC3<>' 


From  the 


1910.148 
.164 
.203 


302.6 
302.6 


29"45 
29.34 
29.77 


1910.17  302.6  29.52 

No  measures  since  1867.    No  sensible  motion. 

4753.     ?.  1259.     (8. 5... 9-0) 
R.  A.  8"  38'"  5 1 '        Decl.  +  38°  56" 


1910.148 
.164 
.203 


34i°9 
342.4 
341.8 


4-93 
5-04 
4.92 


1910.17  342.O 

No  measures  since  1867. 


4.96 


4758.     Ho  251.     (8. 5... 12. 2) 
R.A.8"39ra3a        Decl. +  25°  45' 


1907.102 
9-227 
1908.16 

Probably  fixed. 


3"58 
3.56 


150.6 


3-57 


4761.    Z  1269.    (9- 5-. -9.6) 
R.  A.  8"  39m  21'        Decl.  +  19°  41' 


1906.796 
7.022 
7.102 


3o8?o 
309-4 
309.4 


1 1  "50 
ii.  60 
11.47 


1906.97  308.9  11.52 

The  quadrant  given  by  Dembowski  is  correct. 

4778.    2  1274.    (7.0... 8. 7) 
R.A.8h4i™i6m        Decl. +  38°  47' 


1910.148 
.164 
.203 


40:1 
41.6 
40.0 


8"73 
9.03 
8.70 


1910.17 
No  measures  since  1867. 


40.6 


8.82 


4807.    H  459.    (n. 2... ii. 2) 
R.  A.  8"  43m  41'        Decl.  +  3i°i8' 

A  and  B 

94°5       I5"78 
95-9      -15-64 


1910.931 
11.107 


1911.02  95.2  15.71 

H  459  and  h  529 
1910.93  AR.  A. +  32!!  ADecl.  —  6o"7 

This  is  referred  to  by  Herschel  in  the  note  given  in  Part  I 
of  the  General  Catalogue. 

4815.     2  1280.     (7. 5... 7- 6) 
R.  A.  8"  44™  22'       Decl.  +  71°  16' 

A  and  B 
1910.049  44°8  4"66 


45-8 


4.81 


1910.08  45.3  4-73 

These  stars  make  a  system  of  the  61  Cygni  type. 

B  and  C  (10.6) 
1910.049  94° 13  256727 


•093 
.107 


94.05 
94.17 


256.52 
257.26 


1910.08  94.12  256.68 

The  only  other  measures  of  this  are : 

1879.67     97^65     217741     3« 


Bl. 


From  these  measures  (1879-1910)   we  have  for  the  proper 
motion  of  the  larger  star: 

i7377    in    255?5 

From  meridian  observations  the  proper  motion  of  A  is: 
Kustner         17371     in    254?4 
Porter  1.399    in    255.9 


161 


Burnham:   Measures  of  Proper  Motion  Stars 


4821.    2  1287.    (8.0...  10.3) 
R.  A.  8"  44™  53'       Decl.  +  12°  35' 

A  and  C  (12.6) 
1906.906  io6?i 

.928  105.3 

.966  105.1 


15:10 
14.96 
15-35 


1906.93  105.5  15-14 

The  small  star  is  not  in  Struve.    The  only  other  measure 
disagrees  in  angle: 
1000.28 


H7?o 


2n 


Doo 


4844.    Ho  357.     (6. 5...  13.0) 
R.  A.  8"  47™  48'       Decl. +  26°  40' 


1906.906 
7.022 
7.102 


6?2 

5.8 
5-2 


37"  16 
37.00 
37.38 


1007.01  5.7  37.18 

Change  uncertain.    Ristenpart  (4245)  gives  the  proper  mo- 
tion of  the  large  star : 

0^433    in     172^9 


4863.    2  1293.     (7. 8... 9.0) 
R.  A.  8' 50™  35'       Decl. +  54°  26' 


7908.808 

.000 
.020 


92?2 
92.1 
92.1 


18:85 

18.54 
18.49 


1908.91  92.1 

No  other  measures  since  1866. 


18.63 


4866.    i  Ursae  Maj.    Hu  628. 
R.  A.  8"  50"  59'       Decl. +  48°  31' 

B  and  C(g. 5... 9. 8) 
1909.206  i87?7  o"68 

.227  186.9 0.58 

1909.22  187.3  0.63 

Motion  in  angle,  and  certainly  a  binary  system. 

The  proper  motion  of  the  large  star  is: 

Auwers  0^503  in  24O?6 
Newcomb  0.500  in  240.1 
Boss  0.502  in  240.3 


4883.    66  Cancri.    21298.    (6.1... 8.2) 
R.  A.  8"  54"  3'       Decl. +  32°  43' 

A  and  C  (u.l) 

1908.882  3i8?95  187:15 

.808  319.03  187.65 

•974  318.93  187.20 


1908.92 


318.97 


187.33 


The  first  measures  are  discordant  in  distance : 

I879-3I  3i9°27  188:08  in 

1879.83  318.73  187.07  in 

The  proper  motion  of  66  Cancri  is  very  uncertain : 
Auwers         o"o39    in    324?6 
Boss  0.007    in    225.3 

4891.    67  Cancri.    Sh  101.     (6. 3... 9.0) 
R.  A.  8"  54™  39'       Decl.  +  28°  23' 


Bl 
Bl. 


1908.843 
.862 
.882 


325°33 
324.93 
325.13 


101:93 
101.65 
101.96 


1908.86 


325.I3 


101.85 


No  third  star  available.     The  smaller  star  appears  to  lie 
moving  with  the  other.    The  proper  motion  is : 
Auwers         ofug    in    2i8?o 
Boss  0.105    in    213.4 

4923.    <?  Ursae  Maj.    2  1306.    (5.0... 8. 2) 
R.A.S'sg-'so'       Decl. +  67°  37' 

A  and  C  (9.4) 

1908.766  I48?io  205:13 

.769  147-83  205.04 

.788  148.23  204.76 


1908.77  148.05  204.98 

The  following  is  corrected  for  error  of  180°  in  the  anglo: 
1879.55  I47°97  206:31 


2n 


Bl. 


The  measures  of  the  small  star  should  be  continued  fur  the 
proper  motion  of  a*  Ursae.    This  from  the  catalogue  is : 

Auwers         0:064    «'     J79°° 
Boss  0.070    in     183.9 

Newcomb      0.066    in     181.1 


4950.     2  1304.     (8. 2... 9.0) 
R.  A.9h3mi6"        Decl. +  8i°53' 


1008.785 
10.128 


3I9°4 


24:13 
24.20 


1909.46  319.2 

No  other  measures  since  1867. 


24.16 


4972.     ^  1321.     (7. 4..- 7- 4) 

R.  A.  9"  6m  23'        Decl. +  53°  13' 

A  and  C  (lo.o) 


1909.109 

.112 

.128 


196.30 
196.73 


155-02 
154.34 
I54.42 


1909.12  196.49  154.59 

This  is  a  system  of  the  61  Cygni  class.     The  only  other 
measures  are : 

1879.57  2o8?27  188:86  2n  Bl. 


162 


Burnham:   Measures  of  Proper  Motion  Stars 


The  proper  motion  of  A  from  these  measures,  and  from 
meridian  positions  is  : 
Measures  (AC)          1*667    in    247^8 
Stumpe                        1.668    in    247.3 
Paris                             1.670    in    249.2 

4995.     H  2491.     (II.  I...  II.  2) 
R.  A.  9"  9'"  21'        Decl.  +  35°  i' 

1912.066            202^0                15*37 
.197            200.6                15.03 

Porter                         1.702    in    248.9 
A.  G.  Harv.                1.711     in    249.1 

4984.     6  Hydrae.    H  2489.     (4.0.  ..10.6) 
R.  A.  9"  8m  8s        Decl.  +  2°  49' 

1910.931             i8i?28              42731 
11.107             181.84              41-89 
11.142             181.68              42.65 
11.162             181.37              42.25 

1912.13              201.3                15.20 

Disagrees  with  H's   estimated   angle;  nothing  else   found. 
About  5'  sp  H  2491  is  h  572  ;  faint  and  round. 

4999.     2  1329.     (8.3...  8.  5) 
R.  A.9h9m37"        Decl.  —  o°  44' 

A  and  B 
1910.931             25o?s                18:78 

1911.09              181.54              42.28 

11.107            250.4                18.89 
11.164            250.2                19.23 

The  proper  motion  of  0  Hydrae  from  some  of  the  meridian 
positions  is  too  small.    From  all  the  measures  of  B  (1853-1911) 
we  have  : 
0*382    in     I53?4 

From  meridian  positions  : 
Auwers                o'.'3i8    in     I59?o 
Newcomb             0.339    in     156.9 
Boss  (G.  C.)        0.338    in     157.3 

4986.    H  1165.    (8.3...  12.0) 
R.  A.  9"  8m  26"        Decl.  +  45°  26' 

1907.140            II7?5                25:57 
9.109            116.8                25.53 
9.164            116.2               25.57 

1911.07              250.4                18.97 

From  the  measures  of  AB  (1834-1903)  one  of  these  stars  has 
some  proper  motion.    The  apparent  motion  of  A,  considering 
B  as  stationary,  is  : 
o'/ioS    in    2i6?o 

The  only  value  found  from  the  catalogues  is  : 
A.  G.  Nico.      0:09    in     180° 
To  show  whether  or  not  B  has  any  motion,  I  have  connected 
a  faint  star. 
A  and  C  (12.5) 
1910.931             ioi?78             I57''56 
11.164            101.63             156.56 
11.184            101.25             158.17 
11.200            101.28            156.87 

1908.47              116.8               25.56 

No  other  measures,    h  563  which  is  on  the  same  parallel,  and 
about  4""  p  H  1165,  is  too  diffused  for  accurate  comparison 
with  any  star  in  the  field. 

4993.     Weisseai.     (7.  7...  8.  9) 
R.  A.  9h9mis        Decl.  —  8°i6' 

1907.197              u?4                25*90 
7-997              14-3                25.95 
8.249              14.3                25.87 

1911.12              101.48            157.29 

5000.     H  2492.     (10.8...  neb.) 
R.  A.  9"  iora  6'        Decl.  +  53°  i' 
H  2492  and  h  574 

1909.780                 I20?O                      I5''94 

Herschel  refers  to  H  2492  as  "a  double  object  composed  of 
a  star  and  a  very  faint  nebula  with  stellar  center  ".    The  latter 
is  h  574.    It  is  a  little  brighter  in  the  middle,  but  too  indefinite 
for  accurate  measures. 

1907.81                14.3                25.91 
No  change  since  1880. 

4994.     OS  198  rej.     (8.0.  ..12.  5) 
R.  A.  9"  9"1  17'        Decl.  +  23"  54' 
1907.022            I57?2                14:95 

IO2                 157   2                      14.62 

H  2492  (star)  and  DM  (53°)  1328 
1909.780            I27?9              239:0 

5003.     2  1332.     (7.  2...  7.  5) 
R.  A.  9"  iom  24'        Decl.  +  24°  9' 

1908.974              23?2                  5:67 
9.071              22.4                  5.80 

.137                 158.0                      14.59 

1909.02                22.8                  5.73 

1907.09                    157.5                       14.72 

Change  in  angle  and  distance  from  the  proper  motion  of  A. 
The   measures    should    be   continued    after    the    proper    time 

1911.162              23?2                  5^90 
.164              22.9                 5.72 
.181              21.6                  5.67 

interval. 

I9II.I7                      22.6                         5.76 

163 


Burnham:   Measures  of  Proper  Motion  Stars 


The  proper  motions  are  given  in  A.  G.  Berlin : 
A        o7i02    in    233?9 
B         0.096    in    238.7 

This  is  a  system  of  the  61  Cygni  type. 
No  third  star  available  for  proper  motion. 


5006.    O2(App.)98.    (7. 7... 8.0) 
R.  A.  9*  io™  46'       Decl.  +  7°  46' 

A  and  B 
1911.796  i69?43  111^59 


11.947 
12.046 


169.13 
169.30 


111.64 
111.06 


169.29 


111.43 


ipii-93 

As  it  appears  that  one  of  these  stars  has  a  small  proper 
motion,  I  have  connected  a  faint  star  to  determine  which  of  the 
two  is  moving. 

B  and  €(13.0) 

I9II.947  89?30  145*27 

12.046  89.50  145.09 


1912.00 


89.40 


145.18 


5012.    H  128.    (7.0... 12. 2) 
R.  A.  9'  iim 2i-       Decl.  +  12°  (/ 


1910-931 
11.104 
11.142 


28o?s 
280.4 
279.7 


22766 

22.97 
22.78 


1911.06 
Change  doubtful. 


280.2 


22.80 


5014.     &  Lynns.    21334.     (4.0... 6. 7) 
R.A.o'n-23'       Decl. +  37°  19' 

B  and  C  (10.9) 
1909. 109  2i2?6s  87^64 


.112 
.128 


212.40 
212.43 


87-47 
87.94 


1909.12  212.49  87.68 

B  and  D  (10.8) 
1909.112  257?40  177702 


.128 
.164 


257-03 
256.97 


'77-94 
177-61 


1909.13 


257.13 


177-52 


The  change  in  the  angle  and  distance  of  BD  agrees  with  the 
proper  motion  of  A.  Further  measures  should  be  made  of 
this,  and  the  nearer  star  C. 

1879.61  255?8s  178737  2n  Bl. 

The  large  stars  have  a  common  proper  motion : 
Auwers        o7i22    in    iop?4 
Newcomb     0.134    in    187.7 
Boss  0.137    in    190.5 


5015.    X  1331.    (8.0...  8.0) 
R.  A.  9"  1  1  '"24s        Decl.  +  6i°5i' 

AB  and  E  (9.9) 
1910.  145  223^3 


.148 
.164 


223.08 
223.20 


139773 
139.64 
139.16 


1910.15  223.20  139.51 

No  measures  since  1863.    No  material  change  in  the  close 
pair. 

5021.    H  126.     (8.5...  10.7) 
R,  A.  9"  12™  5'       Decl.  —  o°  6' 


1907.120 
•  137 


32?  I 
31-8 


29"  15 
28.96 


1907.13 


32.0 


29.05 


H's  estimated  angle  is  55°  nf  (=35°)  instead  sf  as  printed  in 
the  General  Catalogue. 


5023.    37  Lyncis.    O2  199.     (6.1...  10.2) 
R.  A.  9"  12™  24'       Decl. +  51°  46' 

A  and  C  (10.0) 

1909.093  s?03  144739 

.109 


.112 


4.70 
4.80 


144.69 
144-33 


Eng 
Eng. 


1909.10  4.84  144.47 

The  only  other  measures  of  the  distant  star  are  : 
1886.38  4?o8  147782  2n 

1894-37  4-25  146.81  2n 

From  these  positions  we  have  for  the  corrected  proper  motion 
of  37  Lyncis: 

0:176    in    333?6 

From  the  star  catalogues  : 

Auwers  07141  in  345^6 

Porter  0.153  in  338.7 

A.  G.  Harv.  0.163  in  348.2 

Boss  0.140  in  344.2 

5030.    Lyncis  157.    21338.     (7.0...  7.  2) 
R.  A.  9"  13-"  29'       Decl.  +  38°  42' 

AB  and  C  (11.4) 
1909.821  i67?02 

.933 
.936 


166.90 
166.72 


I44-23 
143-64 


164 


1909.90  166.88  143.88 

Evidently  the  proper  motion,  if  any,  is  very  small. 
1879.60  i67?46  I437I5  2n  Bl. 

The  two  positions  give  for  the  proper  motion  of  A : 
Measures  07054    in    283^8 

Greenwich  0.047    in    262.7 


Burnham:   Measures  of  Proper  Motion  Stars 


5036.    H  810. 
R.  A.  9"  i-T  10"        Decl.  +  27°  58' 

A  and  B  (12.0) 

1910.148  359°7  i  "86 

.164  357-6  1.95 

.203  360.4  I-7I 


1910.17 


359-2 


1.84 


A  and  C  (9.1.. .9.7) 

1910.148  3i?8  2o"42 

.164  31.8  20.54 

.203  31.5  20.60 

1910.17  31.7  20.52 

The  close  star  is  new.    No  change  in  AC  since  1880. 


5038.     39  Lyncis.     21340.     (6. 5... 8. 3) 
R.  A.  9"  14'"  21'        Decl.  +  50°  3' 

A  and  C  (n.o) 

1909.109     B2°.6g  134*22 

.112     82.97  134-87 

.128     82.95  135-27 


1909.  12 


82.87 


134-79 


The  values  given  of  the  proper  motion  of  A  are  inconsistent. 
Boss  o"oi6    in    239?4 

Auwers  0.023    in    290.7 

A.  G.  Harv.         0.021     in      43.9 

The  measures  of  AC  give  o!'o3i  in  I9?4,  but  as  one  of  the 
early  measures  is  marked  "  unsatisfactory  ",  the  result  is  per- 
haps uncertain,  and  the  measures  should  be  repeated  after  the 
proper  interval. 

1879.57  82?53  135720  2n  Bl. 


5058.    3.  1347.    (6. 7... 8.0) 
R.  A.  9"  17"  i '        Decl.  +  4°  i' 


1906.966 
7.006 
7.120 


310.6 
310.3 


21736 
21.19 

21.02 


1907.03 


310.6 


21.19 


No  change. 


5059.    21  Ursae  Maj.    21346.     (7.0... 8.0) 

R.  A.  9"  17-"  8'        Decl.  +  54°  32' 

B  and  C  (11.2) 


1908.883 
8.997 
9-093 


189.30 
190.05 


96773 
96.43 
96.41 


1908.99 


189.66 


96.52 


The  first  measures  disagree  too  much  in  distance  : 
1879.33 
1879.83 


97"39 
98.62 


189.39 
The  proper  motion  of  A  is  given  : 


in 


Bl 
Bl. 


Auwers 
Boss 


o!'o2i     in     I72?9 
0.031     in    208.8 


5060.     2  1345-     (8. 5...  10. 1 ) 
R.  A.  9"  17™  15'        Decl.  +  64°  52' 


1909.227 
10.109 
10.128 


85°7 
85-4 
84.2 


2763 
3-19 
3." 


1909.82  85.1 

No  other  recent  measures. 


2.98 


5062.     x  Leonis.    P   105.     (4. 9. ..10.7) 
R.  A.  9"  I7m  40"        Decl.  +  26°  42' 

A  and  C  (10.9) 

1912.162  2ii?io  152739 

.164  210.97  151-59 

.197  211.50  152.31 

1912.17  211.19  152.10 

No  other  measures.    The  proper  motion  has  been  given : 
o7o57    in    23!  °7 


Auwers 
Boss 


0.061     in    210.2 


5067.    O2  202  rej.    (8. 5... 13) 
R.A.9°i8mi'        Decl. +  30°  4' 


1911.164 
.184 
.219 


197-9 
198.1 

199-3 


17-43 
17.38 


1911.19 


198.4 


17.32 


Only  recent  measures  of  this. 

h  602  is  5m  20'  exactly  /;  small,  with  central  condensation. 

h  602  and  DM  (30°)  1864  (8.6) 


1911.164 
.219 


49-3 
49-5 


ioo"o 
189.2 


1911.19 


49-4 


189.6 


5075.    Hd  123.    (8.0... TO. 6) 
R.  A.  9"  i8m  24'        Decl.  —  23°  9' 


1907.137 
7-197 
9.170 


6?4 
4.6 
6.0 


4725 
4.28 
4-35 


1907-83  5-7 

No  other  complete  measures. 


4.29 


165 


Burnham:   Measures  of  Proper  Motion  Stars 


5076.    Hno8.    (9. 8... 9. 8) 
R.  A.  9"  i8m  56'       Decl.  —  23°  if 

2".S2 

3- ii 


1907.137 
9.170 


i73°6 
172.1 


1908.15 


172.8 


2.96 


5082.     Arg.  22.     (9.4... 9-5) 
R.  A.  9"  19™  45'       Decl.  —  23°  6' 


1907.137 

7-197 
9.170 


98?9 
98.0 

97-7 


23-52 
23.68 
23.5S 


1907.83 
No  other  measures. 


98.2 


23-58 


5084.    H.  C.  Wilson  7. 
R.  A.9h20m±        Decl.  — 23°  io'± 

This  was  searched  for  in  observing  No.  5076,  but  nothing 
found  near  the  rough  place  given  by  Wilson  agreeing  with 
the  description. 

5090.    41  Lyncis.    S  598.    (S-7---7-5) 
R.  A.  9'  20m  48'        Decl.  +  46°  8' 

A  and  C  (10.4) 

1908.997  79°53  82?99 

9.093  79-83  83.63 

9.109  79-37  83.25 

9.128  79.63  83.42 


1909.08 


79-59 


83-32 


We  have  the  following  earlier  positions  of  C: 
1879.62  8o?57  83^39  2n 

1888.30  80.60  83.58  an 

1893.19  80.70  83.51 


Bl 

Eng 

Donner. 


The  last  is  from  the  Astrograpltic  Catalogue.    The  microm- 
eter positions  give  for  the  proper  motion  of  41  Lyncis: 
oToob    in    i86?7 

It  will  be  noted  that  this  value  derived  from  the  measures 
of  a  faint  star  is  practically  the  same  as  that  found  from  sixty 
years'  measures  of  AB,  and  implies  that  the  meridian  proper 
motion  of  A  is  much  too  large. 

Measures  of  AB      0*087    in     I78?3 
Auwers  0.133    in     187.3 

Porter  0.138    in    192.6 

Boss  0.136    in     181.3 

5093.    X  1349-    (6. 8... 8.0) 
R.  A.  9' 20- 58'       Decl. +68°  4' 


1907.140 
8.227 
8.249 


164.7 
164.5 


>9-43 
18.85 
19.07 


1907.87  164.7 

No  recent  measures.    Fixed. 


19.12 


5104.     22  Ursae  Maj.    21351.  (3. 8... 9.0) 
R.  A.  9"  22m  3'        Decl.  +  63°  35' 

A  and  C  (10.5) 

1908.766     227?94  93-'5i 

.769     227.88  93.26 

228.40  93.07 

227.65  9.}.  34 


.788 
.826 


1908.79  227.97  93.29 

Prior  measures  for  comparison  are : 

1886.39  227?33  9o"6o  in 

1894.40  227.87  92.32  in 


Eng. 
Eng. 


The  three  positions  give  for  the  proper  motion  of  23  Ursae 
Maj.: 

o"ios    in    6s?5 

Ball  has  two  measures  in  1879,  but  as  the  distances  differ  by 
more  than  i",  they  are  not  used  in  the  computation.  No  change 
in  AB. 

Auwers  o'.'io4    in    75^5 

Boss  0.117    in    77.6 


5113.     7  Leonis  Min.    H  1166.     (6.0... 9. 3) 
R.  A.  9"  23™  28'        Decl. +  34°  n' 


1911.950 
12.007 
12.046 


I29?33 
128.88 
129.30 


62.87 
62.55 


1912.00 


129.17 


62.75 


There  is  no  sensible  change  since  1876.    Herschel's  distance 
in  1783  is  much  too  small.    The  proper  motion  of  A  is  given : 
Auwers         o'.'o57    in    2o6?o 
Boss  0.065    in     186.5 

As  these  stars  appear  to  have  a  common  proper  motion,  I 
have  connected  a  third  for  future  confirmation  of  this  move- 
ment. 

A  and  C  (9.8) 

1911.950  2T3?33  97?82 

12.007  213.05  97.85 

12.046  213.07  97.70 


1912.00 


213-15 


97-79 


5116.    2  1360.    (7.4... 7. 7) 
R.  A.  9"  24™  io'       Decl.  +  11°  8' 

A  and  B 
1910.164  243?!  14^45 


.167 


242.7 
243-2 


I4-3I 
14.42 


1910.17 


243.0 


14.39 


The  proper  motions  of  the  large  stars  are  given  : 
A  :=  0^222    in    262?4        Bossert 

0.228    in    261.7       Glasgow 
8  =  0.246    in    243.5        Bossert 

0.251    in    243.8       Glasgow 


166 


Burnham:   Measures  of  Proper  Motion  Stars 


As  there  has  been  no  relative  change  in  these  stars  in  80 
years,  obviously  the  motions  must  be  exactly  the  same.  In  this 
connection  I  have  measured  two  small  stars  for  the  proper 
motion  of  AB. 

A  and  C  (12.0) 

1910.164      6o?97      82^16 
.203      70.15      81.75 


1910.18      70.06 

A  and  D  (10.8) 
1910. 167  57?23 


.184 
.203 


57-24 
57-15 


81.95 

I57"82 
158.16 
157.81 


1910.18  57-21  157-93 

About  i°  sf  are  two  small  faint  nebulae,  not  well  denned 
for  measurement. 

li  608  and  star  io.5m 
1910.164  126°4  I97"o 

.203  125.4  194.3 


1910.18  125.9  195.6 

h  609  and  same  star 


1910.164 
.203 


295.2 


99'.'6 
98.2 


1910.18 


296.0 


08.9 


5124.    Z  1364.    (7-7..  -9-  2) 

R.  A.  9"  24™  59"        Decl.  +  20°  32' 

A  and  B 


1909.206 
.227 
.263 


155.0 
154.8 


16.40 
16.50 


1909.23 


155.0 


16.42 


A  and  C  (n.o) 

1909.206  301^82  4i''33 

.227  301.95  4I-23 

.263  302.35  4I-56 


1909.23 


302.04 


41-37 


The  principal  star  (Lalande  18708)  is  given  some  proper 
motion : 

A.  G.  Ber.      o"n8    in    201  °.o 

There  is  no  change  in  AB.  If  these  stars  have  any  such 
movement,  it  will  soon  appear  in  the  measures  of  the  small  star. 
The  principal  star  is  DM  (20°)  2334  and  not  2332  as  given  in 
Part  I  of  the  General  Catalogue. 


5129.    fJ  909. 
R.  A.  9"  25™  25" 


(7.2.. .12.0) 
Decl.  +  22°  23' 


1909.112 
.170 
.186 


91. i 
87.6 

89.5 


5'.'94 
6.01 

5-51 


1909.16  89.4  5.82 

No  material  change  since  1879.  About  20'  j  is  h  604,  but  it  is 
too  large  and  diffused  for  accurate  comparison  with  any  of  the 
stars  in  the  field. 


5131.     6  Leonis.    Sh  107.     (5.0. ..9. 5) 
R.  A.  9"  25m  32"        Decl.  +  10°  15' 


1909.263 
.299 


74-45 


37-43 
36.90 


1909.28 


74.38 


37.16 


The  proper  motion  of  the  large  star  is  wholly  uncertain. 
Further  measures  of  the  small  star  will  give  this  movement. 
Auwers         o"oii     in    320^7 
Boss  0.024    in     197.8 


5134.     HN.29.     (6.0...  ii) 
R.  A.  9"  26"'  17'        Decl.  +  28°  54' 


1911.950 
12.046 
12.066 


257°97 
258.67 
258.15 


31-75 
31.82 

31-95 


1912.02 


258.26 


31.84 


The  principal   star  has   a  small   proper   motion.     The   six 
positions  by  O2,  Ho,  Doo  and  fi  (1840-1912)  give: 
o"oss    in    241 °6 

As  the  two  positions  by  O2  are  each  on  a  single  night, 
further  measures  should  be  made  for  a  final  value  of  the  proper 
motion.  No  proper  motion  found  in  the  star  catalogues  re- 
ferred to. 


5145.     ^  1369.     (7.0... 8.0) 
R.  A.  9"  27"'  53'        Decl.  +  40°  30' 

A  and  B 

24"70 


1908.025 
.082 
.249 


147.7 
148.8 

149-3 


24-51 
24.77 


1908.12 


148.6 


24.66 


A  and  C  (7-5) 

1908.025  324°38  117^24 

.082  324-20  H7-54 

.249  324-I3  H7.56 


1908.12  324.24 

No  other  late  measures. 


"7-45 


5149.     02  (App.)  102.     (7. 7-.. 8. 7) 
R.  A.  9"  28m  36"        Decl.  +  14°  37' 

1912.867 
.884 
.890 


42.50 
42.63 
43-00 


48.75 


1912.5 


42.71 


48.98 


One  of  these  stars  appears  to  have  a  small  proper  motion ; 
the  distance  is  slowly  decreasing. 


167 


Burnham:   Measures  of  Proper  Motion  Stars 


5152.    2  1371.    (8.0...  10.  5) 
R.  A.  9*  29™  io'       Decl.  +  4°  27' 

A  and  C  (n.8) 
1910.206           27o?i7            I2i?34 
.225            270.30            121.41 
.260           269.83            121.  61 

5225.    O2(App.)io3.    (8.5...  9.0) 

R.  A.  9"  44™  13'        Decl.  +  19°  53' 

• 
A  and  B 

1908.022             124^87              78^54 
.025             124.70              78.80 
.063             125.01              78.46 

1910.23             270.10            121.45 

For  proper  motion  of  AB. 
Bossert      o"m     in    214^4 

5175.     14  Leonis.    HVI.76.    (4.0...  9-3) 
R.  A.  9"  34™  45'       Decl.  +  10°  26' 
1909.170             42^83             83^96 

1908.04              124.86              78.60 

The  three  measures  (1875-1908)  give  a  proper  motion  to  one 
of  these  stars: 

ol'odp    in    26°.  i  (±  180°) 

As  this  motion  may  be  in  either,  I  have  connected  with  each 
a  10.2  m  star: 
A  and  C 

1908.102             I77°97              95"6i 
.156            177.78              95.72 
•159            177.72              95-65 

.206             42-95             84.22 
.227             43.02             83.94 
.299             42.95             83.81 

1908.14              177.82              95.66 
B  and  C 

1909.23               42.94             83.98 
The  distance  by  Herschel  in  1783  is  much  too  small.    The 

1908.  102            23o?33              79?43 
.156            229.78              79.18 
.159            230.25              79.62 

four  measures  by  Eng  and  P  (1881-1909  )  give  for  the  proper 
motion  of  14  Leonis: 
0^135    in    261  ?9 

From  the  star  catalogues  we  have  : 
Auwers        0^159    in    2O2?4 
Boss             0.150    in    254.9 

About  3™  /  and  23'  s  is  the  nebula  h  614.    This  is  too  indefinite 
for  accurate  comparison  with  any  small  star. 

1908.14              230.12              79.41 

5227.    O2  522-    (7.3-.-II-0) 
R.  A.  9"  44™  39'       Decl.  +  65°  21' 

1907.140            123  ?4                I4?74 
8.079             123.2                14.58 
8.249            123.3                14.66 

5195.    Leonis  61.    2  1379-    (7-5---"-2) 
R.  A.  9'  38"  54*       Decl.  +  9°  26' 

1907.120            I74°9                 9"7i 
.137            172.6                 9-65 
.140            174-  I                  9-67 

1907.82              123.3                14.66 
Change  uncertain. 

5280.    H  149.    (8.3...  n.o) 
R.  A.  9"  54"  46'        Decl.  +  5°  36' 

I907-I3              J73-9                 9-68 

1907.006           266?7              3o"g6 
.120           266.2              31.07 

No  material  change  since  1830. 

5219.    OS  207  rej.    (7-7---IO-8) 
R.  A.  9*  43"  17'       Decl.  +  17°  24' 

1910.206           322?o               20723 
.225            321.8               20.36 
.244           322.3               20.52 

1907.06            266.4              31.01 

This  is  DM  (5°)  2269;  only  yellowish. 
No  other  measures. 

5285.    II  472- 
R.A.oh56m2'        Dec!.  +  27°  57' 
A  and  B  (8.  6...  8.  6) 

1910.22             322.0               20.37 
The  principal  star  has  a  small  proper  motion  of  about  0^025 

1907.022             1  19?  2                 9^84 
.120            120.1                 9.40 

in  the  position-angle  of  BA. 

1907.07              119.6                9.62 

168 


Burnham:   Measures  of  Proper  Motion  Stars 


1907.022 
.120 


A  and  C  (12.6) 
141?! 
140.1 


27.90 


1907.07 

No  other  measures. 


140.6 


28.07 


5291.    H  2517.    (7. 2. ..12.0) 
R.  A.  9"  56"'  44"        Decl.  +  38°  36' 


1911.107 
.142 
•  I4S 


152.7 
152.7 
IS3-4 


44-45 
44-47 


152-9 


44-37 


1911-13 

It  is  evident  the  small  star  does  not  belong  to  the  other. 
The  proper  motion  of  A  is  given : 

Porter      o"2O2    in    229?! 

A  continuation  of  the  measures  will  give  an  independent 
value. 

5320.    S  607.    (8. 5... 9-7) 
R.A.  io"om56'       Decl.  — 18°  44' 


1911.222 

12.274 


145-9 
145-2 


9"82 
9-75 


145-5 


9.78 


The  apparent  change  in  distance  since  1825  requires  con- 
firmation. The  only  other  more  recent  measures  are  discordant. 

In  a  low-power  field  nf  is  h  3226.  This  is  too  faint  and 
indefinite  for  accurate  measures. 


5332.     2  1411  rej.     (8.7...IO) 
R.A.  io"2mi5"        Decl. +  32°  57' 


5337.    2  1412  rej.    (8.o...io.o) 
R.  A.  io"  3™  29'        Decl.  +  3°  45' 

A  and  B 
1910.184  295?S  3o"8i 


.186 
.203 


295-4 
295-4 


30.86 
30-34 


1910.19  295.5  30.67 

A  and  DM  (3°)  2324  (8.  7) 

1910.184  49°44  o6'/2i 

.186  49.32  96.04 

.203  _  48.95  _  96.05 

1910.19  49-24  96.10 

If  the  meridian  places  are  correct,  there  is  some  motion  in 
one  of  these  stars  : 

1875  48?o  g8".7  A.  G.  Alb. 

About  4™  /  and  a  little  n  are  two  small  nebulae. 

h  684  and  star  ii.Sm 
1910.206  330?8  i6i?78 

.244  331.4  162.67 


1910.22  33i.i  162.22 

h  685  and  star  10.6  m 
1910.203  79^05  89^07 

.206  79-20  88.94 

.244  78.75  88.99 


1911.104 
.107 


307.8 


35"28 
34-93 


1911.11  307.7  35.10 

The  only  other  position  is  photographic: 

1894.31  3o6?7  35"3i  Scheiner 

5334.     fj  911.     (7. 5... n. 2) 
R.  A.  ioh2m4i"        Decl.  — 19°  10' 

A  and  C  (9.3) 
1910.128  73?47  53"59 


.148 
.184 


73.48 
73.20 


53-49 
53.27 


73.38 


53-45 


1910.15 

From   all   the    measures    of    AC  (1880-1910)  the    corrected 
proper  motion  of  AB  is: 

o''354    in    20417 

The  motion  derived  from  meridian  observations  is  given : 
Radcliffe       0^364    in     I95?8 
Porter  0.365    in    207.2 


1910.22  79-OO 

Other  observations  of  this  are : 

1875.28  77°9  89^8 

1892.25  78.8  84.8 


89.00 


in 
in 


Wn 
Eng. 


5342.     X  Hydrae.    P  593-     (3-8.--I3-5) 
R.A.  io"4m44'        Decl.— ii° 46' 


1910.206 
10.280 

11.222 


ii5°63 
"5.30 
"5-50 


55"68 
55-72 
56.01 


1910.57 


115.48 


55-80 


Omitting  my  position  of  1878,  which  is  from  a  single  night, 
the  three  measures  on  8n  give  for  the  proper  motion  of 
X  Hydrae: 

o?2io    in    241 ?7 

From  meridian  observations : 

Auwers         0*229  in  25i?7 

Boss  0.222  in  245.2 

Newcomb      0.219  in  246.3 


5343.     (10.5... 10. 5) 
R.  A.  10"  4m  54'        Decl.  +  10°  36' 


1907.022 
.102 


i85°7 
185.7 


73.30 
73-56 


1907.06 


185.7 


73-43 


169 


Burnham:   Measures  of  Proper  Motion  Stars 


5356.    2  1415.    (6.  i...  7.0) 
R.  A.  io"  8"  n'        Decl.  +  71°  40' 

A  and  C  (10.0) 
1909.148              io?23            isoroo 
.170             10.10            149.65 
.186             10.89            '49-49 

5441.     2  1438  rej.     (9.0..  .11.0) 
R.  A.  10"  22'"  7'        Decl.  +  13°  47' 

1910.186            248?!                I5"i7 
.203            247.4                15.06 
.206            248.0                14.80 

1910.20              247.8                15.01 

The  DM  number  in  Part  I  of  the  General  Catalogue  should 
be  2265  instead  of  2261.      No  early  measures. 

5451.     2  1440.     (8.0...  9.  5) 
R.  A.  io"  23'"  45'        Decl.  —  3°  18' 

1909.206            347  ?2                is".20 
.227            347.1                15.27 
.244            347.0                15.20 

1909.17               10.41            149.71 

I  do  not  find  any  proper  motion  given  A  from  meridian  ob- 
servations.   The  only  direct  measures  are: 
I879.5S           9°64            I48"57           2n            Bl. 
Further  measures  should  be  made. 

5376.    H  3324-    (9-4-  -.9.9) 
R.A.  lo'ii"1^'        Decl.  +  68°  44' 

1907.140            199°  5                i8'.'58 
.197             199.0                18.62 

1909.23              347.1                15.22 
No  other  recent  measures. 

5466.     H  2534.     (5-7...  12.  3) 
R.  A.  10"  26™  14'        Decl.  +  41°  2' 

I9IO.2O6                 322?7                      22:'8l 
.222                 322.9                      22.53 
.225                 324.1                      22.  6l 

1907.17              199.2               18.60 
Probably  unchanged. 

5418.     P  1322.     (7.0...  13.  3) 
R.  A.  10"  i8m  i'       Decl.  +  2°  59' 

A  and  C  (7.0) 
191  1  .  107             64?oo           2o8"so 
.142             64.12            209.29 
.181              64.28           209.01 
.184             64.23            209.23 

1910.22                    323.2                      22.65 

The  measures,  1879-1910,  should  give  a  very  accurate  value 
of  the  proper  motion  of  the  principal  star  : 
o"ii7    in    26i?6 

Other  values  are: 
Groombridge       o"is8    in    272?5 
Boss                     0.142    in    267.2 
Bossert                 0.113    in    270.0 

5470.     ^  1445.     (8.8...  1  1.  8) 
R.  A.  10"  26™  35"        Decl.  —  o°  15' 

1907.137             i6o?2                  2"66 
.197             158.9                 2.70 
.258            160.6                 2.99 

1911.15               64.16           209.01 

No  suitable  third  star  to  connect  with  either.    From  a  com- 
parison of  the  A.  G.  and  P  positions  of  AC,  one  of  these  stars 
has  a  proper  motion  of  o"io6  in  8o?5  (±  180°) 

5430.    2  1433  rej.    (8.  6.  ..10.4) 
R.  A.  io*  20™  20*       Decl.  —  3°  26' 

1907.137            262?$               23*59 
.197            262.2               23.28 
.258           262.2               22.77 

1907.20             262.3               23.21 
No  other  measures. 

5436.    45  Leonis.    11832.     (6.2.  ..12.1) 
R.  A.  io"  21"  18'       Decl.  +  10"  23' 

1911.107             I3i?io              37^84 
.142             I3L55              38.75 
.162             131.80              38.52 

1907.20              159.9                 2.78 
No  material  change. 

5475.    2.  1444  rej.    (8.  2.  ..io.  6) 
R.  A.  10"  27™  27'       Decl.  +  64°  13' 

1907.140            266?o                I7"59 
10.091            266.2                17.78 
10.093            266.5                18.04 

1911.14              131.48              38.37 

Further  measures  needed  for  the  proper  motion  of  A. 
Auwcrs         oTo22    in    3I2?7 
Boss             0.014    in    120.7 

1909.11              266.2                17.80 
No  other  measures. 

170 


Burnham:   Measures  of  Proper  Motion  Stars 


5477.    S  610.    (8.3...  8.  5) 
R.  A.  10"  28'"  3'        Decl.  —  17°  13' 


1907.271 
8.192 
8.214 


42.9 
42.9 


ios"43 
105.21 
105.07 


1907.89 


43-1 


105.24 


Change  from  proper  motion.     Further  measures  should  be 
made.    The  meridian  positions  give: 

1850  40°2  I02"s  O.  Arg.  S 

1894.3  42.3  105.13  A.  G.  Wash 


5500.    O2223r<?/.     (7.  3...  12.0) 
R.  A.  10"  31™  ios        Decl.  +  41°  4' 


1907.022 

.102 

.137 


I36?o 

135.6 

134.3 


21^91 

21.86 

21.77 


1907.09 


135-3 


21.85 


Change  from  proper  motion.     From  the  measures  of  1879 
and  1907  we  have  the  proper  motion  of  A : 
o"i33    in    2&8?o 


5505.     H  5481.     (9.  6...  11.  4) 
R.  A.  10"  31™  54"        Decl.  +  28°  2' 


1907.102 

.137 


ios?o 
104.2 


21  "20 
21.  18 


1907.12 
No  early  measures. 


104.6 


21.19 


5515.    02  224. 
R.  A.  10"  33m  25s        Decl.  +  9°  28' 

Vogel's  nebula  (Dreyer  3332)  is  about  25'  nf  O2  224.  This 
does  not  appear  to  belong  to  the  planetary  class,  but  has  a 
small  central  condensation,  and  is  therefore  capable  of  accurate 
comparison  with  the  micrometer. 

Nebula  and  12  m  star 
1909.206  I43?4  73"6i 

•227  143-5 73-17 

1909.22  143.4  73-39 

The  following  is  from  A  R.  A.  and  A  Decl.  and  not  direct 
measures,  and  hence  no  motion  is  to  be  inferred. 

1887.24  I45?o  7o':8  in  Eng 

5528.     ^  1462.     (7. 8... 9. 7) 
R.  A.  10"  35™  36'        Decl. +  51°  26' 

A  and  B 
1908.974  I75?4  8"47 


9.109 

9.  112 


175.5 
173.7 


8.08 

8.35 


1909.06 


174.9 


A  and  C  (10.4) 

1908.974  S7°90  I93"97 

9.109  57-67  194-91 

9.112  57.90  194.25 


1909.06 


57.82 


194-38 


There  is  no  sensible  motion  in  AB  since  2.    For  the  distant 
star  we  have : 

1880.63  57?7i  I94"53  2n  Bl. 

The  proper  motion  of  A  from  meridian  positions  is  not  likely 
to  be  correct. 

A.  G.  Harv.     o"o4    in    360° 


5535.     40  Lconis  Min.    (5913.     (6.0...  13.0) 
R.A.  io"36m26«        Decl.  +  26°  57' 


1909.206 
.227 
.299 


ii6?5 
116.6 
116.3 


I3"oo 
13.91 
13-73 


1909.24 


116.5 


13.85 


The  proper  motion  of  the  large  star  from  meridian  positions 
seems  to  be  too  large.  The  five  sets  of  measures  of  the  small 
star  (1880-1909)  give: 

oTios    in    262^0 

This  will  be  confirmed  in  the  future  by  further  measures  of 
C  and  D. 
Other  determinations  from  the  catalogues  are : 

Auwers  o"i37  in  248?! 

Porter  0.131  in  246.2 

Paris  0.136  in  250.7 

Boss  0.124  in  238.4 


5543.     H  2542.     (9.  5...  10.  6) 
R.  A.  10"  37m  30s        Decl.  +  74°  3' 


1910.109 

.128 


227?! 

228.O 


1910.12 


227.5 


22.00 


No  other  measures.  About  35'  j  of  H  2542  is  h  738,  which  is 
double,  or  has  a  double  nucleus ;  the  smaller  from  the  other 
247?8:  1575.  For  this  Engelhardt  gives  253^6:  13".$  (1888.38). 
The  brighter  of  the  two  may  be  a  small  star. 


h  738  and  star  10.4  m 


1910.109 
.128 


277.20 


103.4 


1910.12 


277-5 


103.8 


The  star  is  measured  from  the  bright  nucleus.    It  is  probable 
that  the  center  of  the  nebula  was  used  by  the  earlier  observers. 
1880.05  278?6  9i?4  in  Wn 

1888.38  278.5  96.4  in  Eng. 


Burnham:   Measures  of  Proper  Motion  Stars 


5356.    2  1415.    (6.  i...  7.0) 
R.A.  ioh8mii>       Decl.  +  71°  40' 

A  and  C  (10.0) 
1909-  148              io°23            isofoo 
.170             10.10            149.65 
.186             10.89           149.49 

5441.     2  1438  rej.     (9.0...  H.  o) 
R.  A.  10"  22'"  7'        Decl.  +  13°  47' 

1910.186            248?!                15:17 
.203            247.4                15.06 
.206            248.0                14.80 

1910.20              247.8                15.01 

The  DM  number  in  Part  I  of  the  General  Catalogue  should 
be  2265  instead  of  2261.      No  early  measures. 

5451.     2  1440.     (8.0...  9.  5) 
R.  A.  10"  23'"  45'        Decl.  —  3°  18' 

1009.206            347?2                15:20 
•227            347-1                15-27 
•244            347-0                15.20 

1909.17             10.41           149.71 

I  do  not  find  any  proper  motion  given  A  from  meridian  ob- 
servations.   The  only  direct  measures  are  : 

I879.SS           9°64           I48''57           2n           BI. 
Further  measures  should  be  made. 

5376.     H  3324.     (9.4...  9.9) 
R.A.  w"iimi9'       Decl.  +  68°  44' 

1907.140            I99?5                18:58 
.197             199.0                18.62 

1909-23              347-1                15.22 
No  other  recent  measures. 

5466.     H2534-     (5.7...  12.3) 
R.  A.  10"  26™  14'       Decl.  +  41  °  2' 

I9I0.206                 322?7                      221'Sl 
.222                322.9                    22.53 
.225                 324.1                      22.  6l 

1907.17              199-2                18.60 
Probably  unchanged. 

5418.     P  1322.     (7.0...  13.  3) 
R.  A.  10*  i8m  i'       Decl.  +  2°  59' 

A  and  C  (7.0) 
1911.107             64^00           208:50 
.142             64.12           209.29 
.181             64.28           209.01 
.184             64.23            209.23 

1910.22          323.2            22.65 

The  measures,  1879-1910,  should  give  a  very  accurate  value 
of  the  proper  motion  of  the  principal  star: 
0:117    in    26i?6 

Other  values  are: 

Groombridge       o''is8    in    272?5 
Boss                     0.142    in    267.2 
Bossert                 0.113    in    270.0 

5470.    2  1445.    (8.8...  1  1.  8) 
R.A.  ioh26m35<       Decl.  —  o°  15' 

1907.137            i6b?2                2:66 
.197            158-9                2.70 
.258            160.6                2.99 

1911.15               64.16           209.01 

No  suitable  third  star  to  connect  with  either.    From  a  com- 
parison of  the  A.  G.  and  0  positions  of  AC,  one  of  these  stars 
has  a  proper  motion  of  0^106  in  8o?5  (±  180°) 

5430.    2  1433  rej.    (8.6...  10.4) 
R.  A.  10"  201"  20*       Decl.  —  3°  26' 

1907.137           262^5               23:59 
.J97            262.2               23.28 
.258           262.2               22.77 

1907.20             262.3               23.21 
No  other  measures. 

5436.    45  Leonis.    H  832.     (6.2...  12.1) 
R.  A.  10"  21"  18'       Decl.  +  10°  23' 

1911.107            131?  10             37:84 
.142            131.55             38.75 
.162            131.80             38.52 

1907.20              159.9                2.78 
No  material  change. 

5475.    ^  1444  rej.    (8.  2...  10.6) 
R.  A.  10"  27m  27'       Decl.  +  64°  13' 

1907.140           266?o               17:59 
10.091            266.2               17.78 
10.093            266.5               18.04 

1911.14             131-48             38.37 

Further  measures  needed  for  the  proper  motion  of  A. 
Auwcrs         0:022    in    3I2?7 
Boss             0.014    in    120.7 

1909.11             266.2               17.80 
No  other  measures. 

170 


Bnrnham:   Measures  of  Proper  Motion  Stars 


5477.    S  610.    (8.3...  8.5) 
R.  A.  10"  28'"  3"        Decl.  —  17°  13' 

1907.271              43°S              ios"43 
8.192              42.9              105.21 
8.214              42.9              105.07 

A  and  C  (10.4) 
1908.974              57°oo            I93"97 
9.109              57.67            I94-9I 
9.112              57.90            194-25 

1909.06                57.82            194.38 

There  is  no  sensible  motion  in  AB  since  2.    For  the  distant 
star  we  have  : 

1880.63           57?7i            I94!'53           2n            Bl. 

The  proper  motion  of  A  from  meridian  positions  is  not  likely 
to  be  correct. 

A.  G.  Harv.     0^04    in    360° 

5535.     40  Lconis  Min.    ^913.     (6.0...  13.0) 
R.A.  ioh36m26'        Decl.  +  26°  57' 

1909.206            ii6?5                I3''oo 
.227            116.6                13.91 
.299            116.3                13-73 

1907.89                43.1              105.24 

Change  from  proper  motion.     Further  measures  should  be 
made.    The  meridian  positions  give: 
1850               40?2            I02"s             O.  Arg.  S 
1894.3           42.3            105.13            A.  G.  Wash 

5500.    O2223r<?;.    (7.  3.  ..12.0) 
R.  A.  10"  31™  ios        Decl.  +  41°  4' 
1907.022             i36?o                21'fgi 

.102                  135-6                      21.86 

.137            134-3                21.77 

1907.09              135.3                21.85 

Change  from  proper  motion.     From  the  measures  of  1879 
and  1907  we  have  the  proper  motion  of  A  : 
0^133    in    268?o 

5505.     H  5481.     (9.  6...  ii.  4) 
R.  A.  10"  31™  54'        Decl.  +  28°  2' 

1907.102                  I05?0                      2l"20 

.137            104.2                21.  18 

1909.24              116.5                13-85 

The  proper  motion  of  the  large  star  from  meridian  positions 
seems  to  be  too  large.    The  five  sets  of  measures  of  the  small 
star  (1880-1909)  give: 
0*105    in    262?o 

This  will  be  confirmed  in  the  future  by  further  measures  of 
C  and  D. 
Other  determinations  from  the  catalogues  are: 

Auwers         o"i37    in    248?! 
Porter           0.131     in    246.2 
Paris             0.136    in    250.7 
Boss              0.124    in    238.4 

5543.     H  2542.     (9.  5...  10.  6) 
R.  A.  10"  37™  30'        Decl.  +  74°  3' 
1910.109            227?!                2il'79 

.128                 228.0                      22.22 

1907.12              104.6                21.19 
No  early  measures. 

5515.    02  224. 
R.  A.  10"  33m  25'        Decl.  +  9°  28' 

Vogel's  nebula  (Dreyer  3332)  is  about  25'  nf  O2  224.    This 
does  not  appear  to  belong  to  the  planetary  class,  but  has  a 
small  central  condensation,  and  is  therefore  capable  of  accurate 
comparison  with  the  micrometer. 

Nebula  and  12  m  star 
1909.206            I43?4                73?6i 
.227             143.5                73-17 

1910.12                   227.5                      22.00 

1909.22              143.4                73.39 

The  following  is  from  A  R.  A.  and  A  Decl.  and  not  direct 
measures,  and  hence  no  motion  is  to  be  inferred. 

1887.24  I45?o  7o"8  in  Eng 


5528.    2  1462.    (7. 8... 9. 7) 

R.  A.  10"  35™  36"        Decl. +  51°  26' 

A  and  B 

1908.974  i7s?4  8?47 

9-109  175-5  8.08 

8.35 


9.112 
1909.06 


173-7 
174-9 


No  other  measures.  About  35'  .s  of  H  2542  is  h  738,  which  is 
double,  or  has  a  double  nucleus;  the  smaller  from  the  other 
247?8:  is"5.  For  this  Engelhardt  gives  253?6:  I3"5  (1888.38). 
The  brighter  of  the  two  may  be  a  small  star. 


1910.109 
.128 


h  738  and  star  10.4  m 

277?75  104'^ 

277.20  103.4 


1910.12 


277-5 


103.8 


The  star  is  measured  from  the  bright  nucleus.    It  is  probable 
that  the  center  of  the  nebula  was  used  by  the  earlier  observers. 
1880.05  2;8?6  9i?4  in  Wn 

1888.38  278.5  96.4  m  Eng. 


Burnham:   Measures  of  Proper  Motion  Stars 


5545.    2  1467.    (8.o.  ..io.7) 
1907.137           294?  i                 3^84 

B  and  C 
1907.137              i8?7                 6748 

8.022                    19.4                        6.54 

8.102              18.3                 6.63 

-197            293.3                 3-86 
.217           292.3                 3.87 

1907.75               18.8                6.55 

1907.18             293.2                3.86 

Probably  fixed.     The  proper  motion  of  the  principal  star 
(Groombridge  1682)  is  given: 
Greenwich      07036    in    291  ?2 

5551.    ^  1469.    (7.0...IO.O) 
R.  A.  io"  39"  42'       Decl.  +  66°  6' 
1907.137            324°!               10790 

•197                 323-I                       II-OO 

.217            321.6               10.83 

The  measures  of  AB  by  'S,  A  and  p  (1831-1907)  give  for  the 
apparent  motion  of  A: 
07053    in    341?! 

As  there  is  no  material  change  in  BC,  the  proper  motion  is 
undoubtedly  in  A. 

5564.    H  2545.    (8.6...  10.8) 
R.A.  ioh42mi"       Decl.  +  55°  55' 
1910.206            H3?2               20758 

.222                 II3.2                      20.35 
.225                  II3.I                      20.63 

1907.18             322.9               10.91 

Relatively  fixed.     The  principal  star  is  given  some  proper 
motion  : 
Schroeter     o7iO4    in    270° 

5562.    2  1473.    (8.0...  8.  9) 
R.  A.  10"  41°  43*       Decl.  —  14°  59' 

A  and  B 
1907  137              io°4               30*52 

I9IO.22                    II3.2                      20.52 

Disagrees  with  the  prior  measure  in  distance. 

5566.    8615.    (9.0...  9.0) 
R.  A.  10"  42"  18'       Decl.  —  14°  i' 

1909.206               i?62             85:99 
.227               1.82             86.29 
.263              1.68            86.18 

8.022                   10.3                     30.50 

8.102             10.3              30.74 

1909.23                1.71             86.15 
Motion  doubtful. 

1907.75           10.3           30.59 

No  measures  since  1867.   Fixed. 

A  and  C  (10.7) 
1908.022            326?7               98734 
.102            327.0               98.92 
.266           325.0               98.74 

5574.    2  1477-    (8.  3...  8.8) 
R.  A.  10"  43™  17'       Decl.  +  13°  34' 

1907.137            275?7               17769 
.140           274.8               17.50 

1908.13             326.2               98.67 

.258           275.1               17-45 

I  do  not  find  this  star  in  any  proper  motion  lists  I  have  ex- 
amined.   If  there  is  any  proper  motion,  it  belongs  to  both  com- 
ponents.  The  third  star  has  not  been  measured  before. 

5583.    2  1474.    (6.9...  8.0) 
R.  A.  10*  41"  43"        Decl.  —  14°  38' 

A  and  B 
1907.137             24?4               69:21 

1907.18             275.2               17.55 
No  measures  since  1866.    No  change. 

5587.    H  2547.    (9.  6...  9.  9) 
R.  A.  10"  47™  6'       Decl.  +  14"  4' 

1908.997             64?3               26794 
9.071             64.3               26.98 
9.112             64.6               27.06 

8.  022            24.3              69.10 
8.102             24.3               68.84 

1909.06               64.4               26.99 

1907.75               24.3               69.05 

A  and  C  (7.7) 

1907.137             23?8               75795 
8.022             23.9               75.93 
8.T02             23.8               75.89 

condensation,   and  this  I   have  compared   with   a   faint   star 
north  : 
h  774  and  star  13.2  m 
1909.071            356?5                82772 
.112            356.3                81.67 

1907.75               23.8               75.92 

1909.09              356.4                82.20 

17-2 


Burnham:   Measures  of  Proper  Motion  Stars 


5589.    H  1180.    (9.  4...  io.  3) 
R.  A.  10"  47m  12'       Decl.  +  4°  30' 

1912.255             s8?4               I7"78 
.274             58.0               17.73 

5607.    S  1488  rej.     (7.  7...  io.  8) 
R.  A.  io6  49™  39'        Decl.  +  52°  49' 

1907.102            2I4?4                20*13 
.137            213-6                20.13 

1912.26               58.2               17.75 

No  other  measures  of  this  pair;  disagrees  with  Herschel's 
estimated  angle. 
About  80*  nearly  p  H  1180  is  h  784;  in  the  field  with  the 

1907.12              214.0                20.13 

1910.184           2i4?6               20*03 
.206            214.1                19.89 

.222                 212.9                      20.10 

8.5  m  star  DM  (4°)  2390.     This  is   faint,  small  and  rather 
indefinite  for  measures. 

DM  (4°)  2390  and  h  784 
1912.255            289^6              281*2 

5593.    b'  Hydrae.     (s.4---9-o) 
R.  A.  10"  47m  37'        Decl.  —  19°  29' 

A  and  B 
1908.192            2io?2i            132*05 
.214           210.30            131.82 

1910.20             213.9               20.  oi 

No  other  measures.    The  proper  motion  of  A  is  given  : 
A.  G.  Harv.      0*058    in    301^0 

5623.    2  1494.     (8.3...IO.O) 
R.  A.  ioh5in'45'       Decl.  +  37°  40' 

A  and  B 
1910.263            330?o               io"is 
.280           330.6               10.43 
•931            331-6               10.17 

.266           210.18            131.62 

1910.49             330.7               10.25 

1908.22             210.23            131-83 

The  four  sets  of  measures  by  Eng  and  f5  (1886-1908)  give  for 
the  proper  motion  of  the  large  star: 
0*271     in    is6?o 

Some  of  the  values  from  transit  observations  are: 
Auwers         0*223    in     i66?o 
Stumpe         0.315    in     144.9 
Porter           0.237    in     165.9 

The  proper  motion  of  the  principal  star  is  given  : 
Ristenpart      0*181     in    260*5 

As  the  companion  seems  to  be  moving  with  the  other,  I  have 
connected  a  third  star  : 

A  and  C  (n.8) 
1910.263              73^76            I35"22 
.280              73.02             135-22 
-931              73-65             135-68 

5597.    V  1486.    (7.  5...  8.8) 
R.  A.  io*  47m  52'       Decl.  +  52°  46' 

1910.206            ioi?3               29*98 
.222            101.5               29.78 
.225            101.9               29.68 

1910.49                73.78            135-37 

5625.     21497*?;.     (9-4-  •  -9-7) 
R.  A.  10"  52m  22'       Decl.  +  9°  46' 

1907.137             7i°i               16*73 
.140             71.3               16.82 
.258             71.0               16.76 

1910.22              101.6               29.81 
Distance  increasing. 

5602.     2  1480  rej.     (8.  7.  ..io.  8) 
R.  A.  10"  48"'  41'        Decl.  +  82°  51' 

1910.109            334?o                24*89 
.128            334-1                24.53 
•  148            333-6                24.46 

1907.18               71.1               16.77 
No  early  measures. 

5640.    R  Crateris.    H  1181.    (8.  3...  9-2) 
R.  A.  10"  54™  40"       Decl.  —  17°  41' 

1907.271            268?2               65*24 
8.192           268.2               65.36 
8.214           268.1               65.18 

1910.13              333.9                24.63 

This  has  never  been  measured  before.     As   suggested   in 
the  General  Catalogue,  it  is  DM  (82°)  321.    From  the  Carring- 
ton  positions  the  Greenwich  observers  give  this  star  a  very 
small  proper  motion  : 
0*021     in    41  ?2 

12                                                                                                                                   I 

1907.89             268.2               65.26 

No  other  measures  since  1866. 
A  is  reddish  only.     If  the  proper  motion  of  the  principal 
star  is  correct,  the  two  are  moving  together,  since  there  has 
been  no  change  in  the  distance  in  40  years. 
A.  G.  Wash.      0*114    ''n    270^0 
73 

Bnrnham:   Measures  of  Proper  Motion  Stars 


5641.     Weisse  26.     (8.  8...  9.0) 
R.  A.  10"  54"  48'       Decl.  +  21  °  44' 


1907.140 
.197 

•217 


i73°8 
174-2 
173-8 


14736 
14.28 
14.29 


1907.18 
No  other  measures. 


173.9 


14-31 


5653.     II  173-     (7-  1...  13-  6) 
R.  A.  10*  56"  31"       Decl.—  2°  53' 


1907.137 

.197 


I77?8 
176.8 


36742 
36.78 


1907.17 
No  other  measures. 


177-3 


36-60 


5662.    2  1505.    (8.0.  ..9.7) 
R.  A.  10"  58™  15'       Decl.  +  63°  16' 


1910.093 

•107 
.109 


A  and  B 
312?! 
312.7 
312.0 


8*07 
7-» 
8.61 


1910.10 


312.3 


8.22 


No  change. 


A  and  C  (11.3) 

1910.093  I75?52  218727 

•107  175-75  217.58 

•109  '75.45  217.94 

1910.10  175-57  217.93 

No  sensible  proper  motion  in  A. 

1880.64     I74°70     218732     zn 


Bl. 


5675.    H  1185.     (12.0... 12. 2) 
R.A.  ii"om47'       Decl. +  29°  10' 

A  and  B 
1910.260  i8?5  17727 

The  following  connects  it  with  the  nebula  referred  to  by 
Herschel : 

H  1185  (A)  and  h  820 
1910.260  32?2  25974 

h  820  is  very  faint,  and  the  bisection  not  very  certain. 

5685.    H  4410.    (7. 5... 13.0) 
R.A.  11*  a"  19*       Decl.  — 15"  19' 


1910.  164 
.206 
.244 


2^6?4 
225.0 
223.0 


19787 
19.48 
19.69 


1910.20  224.8  19.68 

These  measures  seem  to  confirm  the  motion  in  angle. 


5688.    H  2560.    (9.  2...  ii.  7) 
R.  A.I  i"  3™  1  1-       Decl.  +  56°  21' 

1908.159  i28?6 

9-206  128.0 

9.227  129.3 


32738 
31.70 
31.98 


1908.86 


128.6 


32.02 

No  other  measures.  About  50'  sf  H  2560  is  h  838  with  a 
central  14  m  star  which  has  been  used  in  comparing  with  a 
brighter  star  /. 

h  838  and  1 1  m  star 

1909.206  24?4  I57"97 

•  227  24.6  158.60 


1909.22 


24-5 


158.28 


My  former  measures  will  be  found  in  Pub.  Lick  Ol>sy.  IT, 
p.  163. 


5695.    0223  1  «;.    (7.  7...  8.  7) 
R.  A.  H*  4"  y?       Decl.  +  31°  6' 

A  and  C  (8.0) 
1907.997  336?47  162777 


8.057 
8.102 
8.118 


336.35 
336.53 
336.62 


162.82 

163-13 
163.11 


1908.07 


336.49 


162.96 


Rejecting  my  single  measure  in  1904,  the  four  mean  results 
by  O2,  H2,  Eng  and  P  (1881-1908)  give  for  the  apparent 
proper  motion  of  A : 

07641    in    io6?3 

It  would  be  unsafe  to  assume  that  a  star  of  the  magnitude  of 
C  has  no  proper  motion,  though  the  chances  are  that  will  prove 
to  be  the  case.  I  have  measured  the  nearest  faint  star  for  the 
settlement  of  this  matter  hereafter. 

C  and  c  (12.7) 

1908. 159      34?82     I34"5o 
.249      34.85     134-36 


1908.20 


34.83 


134.43 


Other  values  of  the  proper  motion  of  A  are  : 
Stumpe         07557    in     iu?2 
Paris  0.605    in     no.8 

Porter  0.546    in     110.2 


5699.    O2(App.)io8.    (6.  2...  7.0) 

R.A.  11*  6*2*       Decl.  +  36°  28' 
1910.  128  70^70  134798 


.148 
.167 
.184 


70.45 
70.53 
70.57 


135-29 
135.63 
135.46 


1910.16 


70.56 


135.34 


174 


Burnham:   Measures  of  Proper  Motion  Stars 


Assuming  that  B  has  no  sensible  motion,  the  four  positions 
by  A,  Fr  and  (3  (1876-1910)  give  for  the  proper  motion  of  A: 
o''227    in    230^2 

To  determine  this  hereafter,  I  have  connected  a  faint  star : 

A  and  C  (12.2) 
1910.184  i6o?04  87782 


.186 

.225 


160.66 
160.53 


88.03 
88.89 


160.41 


88.25 


1825 

1875 
1910.2 


1910.20 

B  and  DM  (36°)  2170  (8.0) 

A  R.  A.  2m  52^4        A  Decl.  5772  Weisse 

2    53.2  59.2  A.  G.  Lund 

2    53-3  60.4  P 


5707.    2  1517-    (7- 3-.- 7- 3) 

R.  A.  iin7"'24"        Decl. +  20°  47' 

AB  and  C  (10.4) 


1910.091 
•093 
.107 


ioi?93 

102.10 
102.05 


2Il''z8 

211.25 
211.53 


1910.10 


102.03 


211.35 


The  prior  positions  by  O2  depend  upon  a  single  night  each. 
From  a  comparison  with  the  present  measures  we  have  an 
independent  value  of  the  proper  motion  of  AB : 
o"4Oi     in    251?! 

The  later  determinations  from  meridian  observations  are : 
A.  G.  Ber.     07417    in    252?3 
Porter  0.425    in    251.8 


5708.     Arg.  24.     (9.0... 9. 2) 
R.  A.  Iin7m36'        Decl.  —  15°  19' 


1910.164 
.206 
.244 


351.2 
350.1 
351.2 


I776o 
17.91 

I7.5I 


1910.20 


350.8 


17.67 


h  837,  which  should  be  about  15'  distant  and  nearly  p  Arg.  24, 
was  not  found ;  doubtful  in  Dreyer. 


5709.     8  Lconis.    P  1282.     (2. 5. ..9.1) 
R.  A.  nb7I"43t       Decl. +  21°  11' 

A  and  BC 
1907.102  344?4  188758 


.120 
•  173 


344-1 
344-4 


188.63 
188.79 


1907.13 

1911.260 
-315 


344-3 

344-30 
344-05 


188.67 

189744 
189.24 


1911.29 


344-17 


189.34 


1911.222 
.260 


A  and  a  (12.5) 

40?93 
40.00 


95-17 
95.67 


1911.24 


40.91 


95-42 


An  earlier  measure  of  this  star,  not  given  in  the  General 
Catalogue,  is : 

1879.26     44?35     9S"38     2n     P". 

From  the  two  positions  of  Ao  (1879-1911)  and  the  seven  of 
A  and  BC  (1850-1911)  we  have  for  the  proper  motion  of 
8  Leonis: 

Aando  R.  A. +  07140       Decl.  —  07130 

AandBC  +0.145  — 0.119 

Therefore  the  motion  of  the  large  star  is : 
Measures      07189    in     I3i?2 

From  the  star  catalogues  we  have: 

Auwers         0.181     in  131.5 

Newcomb     0.206    in  133.0 

Boss              0.207    in  134.4 


5721.    O2(App.)ioo.    (7. 4... 8.0) 
R.  A.  ii»9mi'        Decl. +46°  31' 


1910.128 
.148 
.167 


257-40 
257.38 

257-53 


80^25 
80.11 
80.20 


1910.15 


257-44 


80.19 


Change  in  distance.    One  of  these  stars  has  a  proper  motion 
of  about  07038  along  the  line  joining  the  components. 


5727.      H  2564.     (9. 3...  10. 9) 
R.  A.  n"iom3'        Decl. +  42°  55' 

No  micrometer  measures  of  this  pair,  but  from  the  proved 
accuracy  of  the  astrographic  positions  at  Helsingfors,  the  fol- 
lowing is  sufficient  at  this  time : 

1895.32  I27?9  32^33  Donner. 

5729.     4>  Leonis.    Sh  121.     (4. 6... 8. 5) 
R.  A.  1 1"  10™  34'        Decl.  —  3°  o' 


1907.997 
8.000 
8.022 
8.039 


288.65 
288.95 
288.33 


97786 
98.26 
98.44 
98-34 


1908.01 


288.60 


98.23 


In  computing  the  proper  motion,  the  measures  by  H  and  Sh 
cannot  be  used  for  obvious  reasons.  The  four  positions  by 
Eng  and  P  (1881-1908)  give  for  the  apparent  motion  of  the 
large  star : 

07123    in    27i?7 

The  micrometer  measures,  with  the  relation  of  these  stars 
in  Weisse,  give  a  larger  value : 

07147    in    275?6 


175 


Biirultain:   Measures  of  Proper  Motion  Stars 


Other  values  of  the  motion  of  A  are : 

Newcotnb  (Stand.)        o"iao  in  246^0 

Newcomb  (Fund.)        0.114  in  251.2 

Auwers  0.126  in  259.1 

Boss  0.121  in  248.6 


5732.  p  600.    (6. 5... 12.0) 
R.  A.  1 1*  iom  53'       Decl.  —  6°  29' 

A  and  C  (8.5) 

1910.148  97?78  59? 16 

.167  07.50  59.08 

.184  98.10  59.69 

1910.17  97.79  59.31 

One  of  these  stars  has  a  small  proper  motion. 

5733.  O2  233.    (6. 9... 9. 8) 
R.  A.  ii"nm26i       Decl.  +  67°  20' 

A  and  C  (12.0) 


1912.066 
.162 
.164 


303.47 
303.37 


41  "54 
41.83 
41.66 


1912.13  303.39  41-68 

For  the  proper  motion  of  the  principal   star;   no   other 
measures. 

Schroeter  oTor)5  in    253?4 


5735.    v  Ursae.    X  1524.     (3-7-..io.i) 
R.A.  ii*i2mo'       Decl. +  33° 45' 

A  and  C  (13.6) 

1911.947  146783  154798 

12.046  145.30  153.96 

12.066  146.33  154.82 


1912.02 


146.15 


IS4-S9 


The  proper  motion  of  A  is  given  from  meridian  observations : 
Auwers  (F.  C.)          07052    in       6!8 
Auwers   (cor'd.)       0.050    in    315.9 
Newcomb  (F.  C.)       0.034    in    319-6 
Boss  0.027    in    303.7 

No  sensible  change  in   AB  since  1830.     No  other  measures 
of  C. 

5746.    2i528r#;.    (8. 2. ..ii. 8) 
R.  A.  1 1'  13-  22'       Decl.  +  10°  36' 


1912.236 

•274 
.312 


2l8?I 

217.7 
217.9 


I973S 
19-33 
19.28 


1912.27  217.9  19.33 

The  only  earlier  measure  is  of  recent  date. 


5768.     Wilson  9. 
R.  A.  1 1"  18™  ±        Decl.—  9°  50' ± 

I  failed  to  find  this  in  or  near  the  rough  place  given  by 
Wilson.  It  should  be  4'  j  of  P  26. 

About  3m  p  P  26,  and  in  the  field  with  a  6.3m  star,  Lalande 
21618,  are  two  small  nebulae,  the  nearest  a  little  the  brightest, 
with  some  central  condensation  in  the  other. 

L  21618  and  h  862 
1910.128  295770  iio"57 

.164  295.83  110.48 


1910.15 


295.76 


110.52 


L  21618  and  h  863 
1910.128  4O?2O  176789 

.164  40.20  176.12 


1910.15 
Observed  by  Engelhardt : 


1893.22 
1893.22 


296^1 
40.5 


40.20 

io67i 
177-9 


176.50 


in 
in 


Eng 
Eng. 


5775.    81  Leonis.    114433.    (6.0... 10.2) 
R.  A.  1 1"  19™  2i'        Decl.  +  17°  8' 


1907.006 
.120 
.140 


348?8 
347-7 
349-0 


55-95 
56.06 


1907.09 


348.5 


56.05 


Change  from  proper  motion  of  A. 
From  the  measures  of  the  small  star  (1840-1907)  the  proper 
motion  of  81  Leonis  is: 

of  142    in    268?8 

From  the  star  catalogues : 

Auwers         0^172    in    269^0 
Boss  0.144    '"    279.2 


5789.     H  499.     (8. 5... 10. 4) 
R.A.  iih2i"'44i        Decl. +  36°  58' 


1908.192 
9.164 
9.206 


253.2 
253.8 
253.8 


40"57 
40.27 
40.21 


1908.85 
No  other  measures. 


253-6 


40-35 


5790.    T  Leonis.    "S.  19,  App.  I.    (5.0... 7.0) 
R.  A.  n"  21"  46'       Decl.  +  3°  31' 

A  and  B 

1910.280     I74°82  92708 

.299     175.02  91.86 

.318     174-56  91-63 

.320     174-29  91-90 


1910.30 


174.67 


91.87 


176 


Burnham:   Measures  of  Proper  Motion  Stars 


Assuming  no  motion  in  B,  the  measures  of  En,  A  and  P 
(1863-1910)  give  for  the  apparent  motion  of  A : 
0*109    in    104^0 

This  motion  from  meridian  positions  seems  to  be  very  un- 
certain : 

Auwers         o"oi6    in    248?! 
Boss  0.027    in     134.3 

Newcomb     0.021     in     142.6 

For  determining  hereafter  the  motion  of  B,  if  any,  I  have 
connected  a  faint  star: 

B  and  C  (13.3) 

1910.280  233? 13  106*46 

.318  234.13  105.98 

•337  233.33  106.94 


1910.31  233.53  106.46 

There  is  a  14  m  star  10"  or  15"  from  C. 

A  and  DM  (3°)  2507  (9.3) 
1875  AR.  A. +  si!i6       ADecl.  — 28*2 

1910.3  50.94  30.1 

B  and  DM  (3°)  2507 

1875  A  R.  A.  +  50!  26       A  Decl.  +  63*8 

1910.3  50.27  61.6 


5801.    OZ(App.)m.    (7.0.  ..9.0) 
R.  A.  n"  23™  44"        Decl.  +  30°  38' 


1909.206 
.227 
.244 


33^29 
33.16 
33.48 


66"o8 
67.24 
67.03 


1909.23 


33.31 


67.08 


Without  change.     No  third  star  available  for  investigating 
the  proper  motion  of  A. 

Porter      0*229    in    2oo?5 


5809.     H  500. 
R.  A.  1  1*  25™  25" 


(9.  5...  9.7) 
Decl.  +  36°  32' 


1909.206 
.227 


27?8 
27.9 


25*13 
25.04 


A.  G.  Alb. 


A.  G.  Alb. 


5793.     57  Ursae  Maj.    2  1543-     (5-2. ..8. 2) 
R.  A.  1 1"  22™  37'        Decl.  +  40°  o' 


A  and  C  (11.5) 

1909.936  9?oo 

10.091  9.10 

10.093  9-00 


216.76 
216.65 


1910.04  9.03          216.55 

The  proper  motion  of  AB  is  evidently  very  small: 
1879.62  8?6i  216*51  2n  Bl. 

The  8  m  star,  DM  (40°)  2432,  400"  distant  from  57  Ursae 
Maj.  in  the  direction  of  236°,  has  two  small  stars  near  for 
which  we  have  positions  in  the  Astrographic  Catalogue. 

DM  (40°)  2432  and  star  10.3  m 
1909.936  183^79  97"94 

10.091  184.05  97.85 

10.093  184.03  98.06 


1910.04 


183.96 


97-95 

DM  (40°)  2432  and  star  10.4  m 

1909.936            167^79  128*85 

10.091             167.82  128.24 

10.093            167.72  128.52 


167.78 


128.54 


1910.04 

The  other  positions  are : 
1895.31  184?! 

1895-31  167.8 

Meridian  values  of  the  proper  motion  of  57  Ursae  are : 
Boss  0*051     in    280?! 

Auwers         0.079    in    286.9 


98*43 
128.59 


Donner 
Donner. 


1909.22 
Probably  fixed. 


27.8 


25.08 


5814.     H  2574.     (9. 5... 9-5) 

R.  A.  11"  25"'  55"        Decl.  +  53°  41' 

A  and  B 


1009.112 
.186 


78.2 


36*67 
36.78 


1909.15 


78.0 


36.72 


No  early  measures.    The  nebula  referred  to  by  Herschel  is 
very  diffused. 

H  2574  (B)  and  h  908 
1909.112  is?o  129*33 

.186  15.4  129.43 


I909-I5  15-2 


129.38 


5833.    90  Leonis. 
R.  A.  1 1"  28-"  28' 


1552-     (6.0... 7. 3) 
Decl.  +  17°  28' 


A  and  C  (8.9) 

1909.071  234?88  62*56 

.112  234.77  62.84 

.148          234.67  63.02 


1909.11 


234.77 


62.81 


Change  uncertain,    h  924  is  2j^m  /  and  5'  s;  faint  and  diffused. 
The  proper  motion  of  90  Leonis,  if  any,  is  small: 

Auwers         0*033    in    282?o 

Boss  o.on     in    248.2 

5853.     H  183.     (8...  13. 5) 
R.  A.  1 1"  31™  48'       Decl.  +  13°  37' 


1907.006 

.120 


io?7 
10.7 


95-03 
95-16 


1907.06  10.7  95.09 

Only  a  little  yellowish.     No  other  measures. 


177 


\ 


Burnham:   Measures  of  Proper  Motion  Stars 


5973.    23076.    (9-  3..-  9-8) 
R.  A.  1  1*  50"'  30'       Decl.  —  4°  33' 

- 
A  and  DM  (69°)  643  (9.1) 
1911.219              87?i8            126704 
.222              87.33             126.21 

1907.258             53°8                 5758 
7-271              53-8                 5-74 
8.192             55-1                 5-75 

1911.22                87.25             126.12 
From  meridian  observations  of  the  two  larger  stars  : 

I907-57               54-2                 5-69 
No  other  measures  since  1867.    Fixed. 

5974.    0  918. 
R.A.ii'si-37'       Decl.  +  32°  57' 

The  place  given  in  the  General  Catalogue  is  that  of  the  8  m 
star  Lalande  22406  which  is  I™  />.    The  correct  place  of  0  918, 
DM  (33°)  2174  is  given  above. 

Three  nebulae  by  d'  Arrest  precede  the  double.    One  of  them, 
Dreyer  3095,  is  31^9  />  and  8*9  n.    h  1027  is  about  20'  distant 
«/>;  too  faint  and  diffused  for  accurate  comparison.    There  is 

1875            I79?2            12977           A.  G.  Chris. 
1900           179.6            126.9           Greenwich 

1875            88.0           127.0           A.  G.  Chris. 
1900             87.3            127.3           Greenwich. 

6035.    2  1602.     (7.  5...  9.0) 
R.  A.  12"  im  7-       Decl.  +  69°  45' 

A  and  B 
1911.219             I79?2                16751 

.222                  I79.I                       16.43 

.260         179.4            16.34 

a  6"  pair  of  small  stars  in  248^7  :  4879. 

6026.    O2  244. 
R.A.I  i"  59"  29'        Decl.  +  53°  33' 
h  1085  is  about  15'  sf  O2  244. 

h  1085  is  about  15'  sf  O2  244. 
1910.091            26o?4               48723 
•093            258.0               48.13 
.107           259-7               47-93 

1911.23          179.2           16.43 

From  the  measures  of  2,  A,  H2  and  0  (1831-1911)  the  proper 
motion  of  A  is: 

It  is  not  probable  that  B  has  any  sensible  movement  which 
would  change  this  result,  but  I  have  connected  a  distant  faint 
star: 

A  and  C  (11.2) 
1911.219            3i7°i8            I557I6 
.222           317.13            154.88 
.260           316.80            155.46 

1910.10             259.4               48.10 

h  1085  and  star  n.8  m 
1910.091              77?8             122^71 
•093             77-4             124.20 
.107             77.4             123.31 

i9".23             317-04            I55-I7 

6036.    H  2596. 
R.  A.  12"  im  15'       Decl.  +  43°  46' 

1910.10               77.5              123.41 

The  prior  positions  give  : 
1891.49           259?5            5172           in           Eng 

H  2596  (A)  and  h  1088 
1911.219           239?3             22477 

.222                239.3                  225-0 

1891.49            77.8           121.  i           in           Eng. 

6027.    2  1599.    (7.o...io.o) 
R.  A.  1  1"  59-  30'        Decl.  +  69°  27' 

A  and  C  (12.0) 
1911.200           331  ?88            106727 
.219           331.85            105.58 
.323           331.67            105.58 

1911.22                  239.3                  224.8 

h  1088  is  brighter  in  the  middle,  and  elongated  in  133°. 

II  2596  (A)  and  h  1091 
191  1  .  22       A  R.  A.  25:5       A  Decl.  IO276 

h  1091  is  small,  round  and  diffused.    This  is  the  one  referred 
to  by  Herschcl. 

1911.21             331.80            105.81 

A  and  DM  (69°)  641  (7.5) 
1911.200            I79°95            126779 
.219            17975            126.08 

R.A.  I2"3mio'       Decl.  +  11°  58' 

1911.142           3o6?4                 9764 
.164           306.8                9.67 

.222            179.77            126.79 

1911.15             306.6                9.65 

1911.21              179.82            126.85 

No  change  since  1830. 

180 


Burnham:   Measures  of  Proper  Motion  Stars 


6050.    2  1605.    (8.0...  8.  5) 
R.  A.  12"  4m  19'        Dec!.  —  i  °  34' 

1909.266            278?8                23"63 
.302            278.8                23.77 
.304            278.8                23.82 

6068.     2.  1609.     (7-  7-..  9-  5) 
R.  A.  I2n5'"4i'       Decl.  +  51°  30' 

A  and  C  (12.6) 
1911.219            I46?3o             68T53 
.222            145.7°             68.53 
.260            146.05             68.64 

1909.29              278.8               23.74 
Without  change. 

6052.    23079-     (8.  7...  10.  7) 
R.A.  I264m32«        Decl.  —  4°  5' 

1910.  186             87?7&             J4''92 
.206             87.23              14.79 
.244             86.88             14.98 

1911.23              146.02             68.57 

The  alleged  proper  motion  of  A  needs  confirmation. 
A.  G.  Harv.      o"l4O    in    27o?o 

No  change  in  AB.    No  other  measures  of  C. 

6083.     yirginis  78.    H  203.     (6.  8...  12.  7) 
R.A.  12"  8m  6'       Decl.  —  5°  3' 

A  and  B 
1909.112            353?!               24^88 
.186           351.4               25.09 
.227           352.6               25.30 

1910.21               87.29              14.90 

In  the  General  Catalogue  this   is   called   SD  (4°)  3246;   it 
ould  be  (3°)  3246.    No  change  since  1868. 

6064.    2  1608.    (7.  5...  7-  7) 
R.  A.  12"  s"1  31'       Decl.  +  54°  6' 

1909.263                 223?2                      II?79 

.299            222.6                11.89 
.304            223.0                12.13 

1909.17             352.4               25.09 

Rejecting  the  single  measure  of  1878,  the  other  positions  give 
for  the  proper  motion  of  A  : 

Measures      o"i5i     in    328?3 
Porter           0.184    in    317.7 

Further  measures  should  be  made  for  a  final  correction  to 
the  proper  motion.    In  this  interest,  I  have  added  a  third  1  1  m 
star. 
A  and  C 

1909.112            I94?83              74-'i6 
.186            195.18              74-55 
.227            195-05              74-54 

1909.29              222.9                11-94 

No  third  star  near  enough.    Distance  increasing. 
Bossert     o"i7    in     180° 

6067.    Sh  136.    (6.0...  8.0) 
R.  A.  12'  5™  36'       Decl.  +  82°  23' 

1911.162              75?39              66"8i 
.181              75.26              66.46 
.184              75-45              66.77 
.200             75-23             66.95 

1909.17              195.02              74.42 

6084.    S  1616.     (7-5-  --9  7) 
R.  A.  12"  8m  19"        Decl.  +  9°  27' 

A  and  C  (9-  5) 
1909.112           293?  10            154*91 
.148           293.00            155-11 
.151            293.00            154-36 

1911.18               75-33             66.75 

The  proper  motion  of  the  principal  star  is  extremely  un- 
:rtain  in  direction  and  amount. 

Groombridge              o"oi2    in    345?9 
Greenwich  (1890)       0.045    m    304.0 
Greenwich  (1900)       0.016    in    296.5 
Boss                            0.019    in    267.0 

The  relative  motion  of  A  with  respect  to  B  from  the  meas- 
res  (1876-1911)  is: 

0^049    in    244?  i 

1909.14             293.03            154-79 

These  measures  should  be  repeated  at  a  later  date  for  the  true 
proper  motion  of  A,  as  the  first  position  by  Dembowski  depends 
upon  a  single  night.    The  three  measures  (1864-1909)  give: 

0^147    in    i47?4 

Other  values  from  transit  observations  are  : 

Porter           o"i40    in     i6i?5 
Paris             0.171     in     180.0 

181 


Burnham:   Measures  of  Proper  Motion  Stars 


A  and  DM  (9°)  2600  (9.0) 

1884.1           ADecl.  I39T9           A.  G.  Leip. 
1901.  i                       136.7           p 

6133.     ii  Comae.     Ho  52.     (5.0.  ..13.0) 
R.  A.  12"  14"  39'        Decl.  +  18°  27' 

1910.148              44?!                  9728 

•244              43-9                 9-35 
•280              43.4                 9.51 

6090.    2,  1619.    (7.  5...  7.  8) 
R.A.  i2b8n'S9'       Decl.  —  6°  35' 

A  and  B 
1910.318           28o?S                 7*42 
.320           278.7                 7.21 
•  337            279.9                7-23 

1910.22               43.8                 9.38 

Some  relative  change,  and  perhaps  a  system  of  the  61  Cy% 
type.    No  third  star  available. 
The  proper  motion  of  n  Comae  is  given: 
Auwers         o7l66    in    3O2?8 
Bossert          0.145    in    308.3 

1910.32             279.7                7.29 

Another  value  of  the  proper  motion  of  AB  is  : 
Porter      07248    in    266^7 

For  an  independent  determination  of  this  motion,  I  have 
:onnected  the  9.5  m  star,  SD  (6°)  3533: 

A  and  C 
1910.299            I77?6s             98798 
.318            177.40             99.32 
.320            177.27             99.35 

6144.     H  518. 
R.  A.  12"  15"-  56"        Decl.  +  29°  49' 

The  absence  of  any  description  in  Herschel  makes  the  iden 
fication    somewhat    uncertain,    but    it    is    probably    the    ps 
measured  : 
A  and  B  (10.7..  .11.5) 
1909.304           323  ?6               22788 

1910.31              177.44             99-22 

6124.    H  2609. 
R.  A.  12"  I2ra  18'        Decl.  +  5°  55' 

The  R.  A.  in  the  General  Catalogue  is  im  too  large.    The 
)bject  referred  to  by  Herschel  is  h  1178. 

H  2609  and  h  1178 

H  518  and  h  1205 
1909.304            357?2              213^0 

No  other  measures,    h  1206  is  in  the  same  vicinity. 

6145.    02  247  n>/.    (7.0...  13.  5) 
R.  A.  I2"i6mn>        Decl.  +  3°  58' 

1909.266           340?9               n78s 
.304            342.7               11.77 
•  342            340.8               11.77 

1910.10           AR.  A.  —  38:5           ADecl.  —42*35 

6128.    ^i6yrej.    (8.  3...  10.8) 
R.  A.  12"  13"  58'       Decl.  —  13°  27' 

1909.304           278?7               15773 
.342           278.2               15.73 
.378           278.1               15.42 

I909-30             341-5               ".So 

The  apparent  change,  in  both  distance  and  angle  since  189 
indicates  some  proper  motion  in  A. 

6147.     17  yirginis.    21636.     (6.  2...  9.0) 
R.  A.  12"  16™  26'       Decl.  +  5°  58' 
1910.091            336?58             20736 

1909.34             278.3               15.63 

.107            336.68             20.16 

No  other  measures. 

6132.    H  207.    (10.5.  ..10.  6) 
R.  A.  12"  14™  35'       Decl.  +  15°  8' 

1909.  186            ioo?8               23727 
.227            100.9               23.72 

1910.10             .«(>.  63             20.26 

No  material  change.    The  proper  motion  of  17  yirginis  is  : 
Auwers         o"i95    in    254?o 
Bossert         0.189    in    251.4 
Glasgow       0.203    in    233.3 
Boss              0.180    in    250.6 

About  15'  sf  17  yirginis  is  a  small,  round  nebula,  discovere 
by  d'Arrest. 
Dreyer  4324  and  star  10.7  m 

1909.21              100.8               23.50 
No  other  measures.    About  15'  nf  H  207  are  h  1198  and  h 

1910.091             6s?2             226786 
.107             65.8             226.04 

199;  too  diffused  for  accurate  measures. 

1910.10               65.5             226.45 

182 


Burnham:   Measures  of  Proper  Motion  Stars 


6154.    H  209.    (9.3...  9-  6) 
R.  A.  12"  17™  46'        Decl.  —  2°  23' 

1910.128            I48?3                23"8s 
.148            146.6                23.84 
.164            146.8                23.81 

6192.    Sh  146. 
R.  A.  i2B25m7s       Decl.  +  1°  59' 

A  and  C  (7.  2...  8.0) 
1912.351            29o?03              49'.'s6 
.353            289.68              49-51 
.389            289.62              49.63 

1910.15              147.2                23.83 

lange  in  distance?    In  the  recent  measures  by  Zinner  this 
is  erroneously  called  A  79,  another  pair  3™  /  and  l/2°  s. 

1912.36              289.78 
There  is  no  evidence  of  relative  motion 

49-57 
since  the  measure 

6156.    OS  248  rej. 
R.A.  i2niS'"4s        Decl. +  6°  38' 

Three  nebulae,  h  1213,  h  1215  and  h  1222  precede  the  O2  star, 
the  nearest  about  50'  p  and  4'  n. 

h  1215  and  star  10.3  m 
1911.219  73 ?6  204^9 

h  1222  and  same  star 
1911.164  174^6  oo''6 

.219  174.3  9i.4 


1911.19  174-4 

For  the  last  there  is  an  earlier  position  : 
1893.27  I74?6  9i"3 


Kobold 


6181.    02  251. 
R.  A.  12"  23™  9"        Decl.  +  32°  3' 

No  apparent    elongation.     About  30'  distant  sp  is  h  1258. 
This  in  the  DM  is  (32°)  2246  (9.5).    No  comparison  star  near. 


6183.     8  Corvi.     Sh  145.     (3.0. ..8. 7) 
R.  A.  12"  23™  40*        Decl.  — 15°  51' 


1910.318 

•  337 

•  340 


2i4°8 
214.4 
215.0 


24.23 

24.15 


1910.33    214.7     24.15 

No  third  star  near;  common  proper  motion. 

A  and  SD(is°)3485 
1900  AR.  A.67f6        ADecl.  II3"8        A.  G.  Wash. 


1910.34 


67.6 


115.8      3 


The  proper  motion  of  8  Corvi  is  given: 

Auwers  0*261  in  240?! 
Bossert  0.251  in  233.4 
Boss  0.252  in  235.5 

Newcomb      0.251     in     233.7 


of  OS  in  1860. 

There  is  a  new  companion  to  the  principal  star,  not  hereto- 
fore seen: 

A  and  B  (12.3) 

I9I2.35I  334°6  4"65 

•  353  335-6  4.70 

-389  339-4  4-51 


1912.36 


336.5 


4.62 


6211.    2  1658.    (8.0... 9.8) 

R.A.  I2h29rao"        Decl. +  8°  /' 

A  and  C  (8.2) 


1909.071 
.148 
.186 


260.40 
260.45 


109.08 
109.22 


1909.13  260.33  I09-I5 

Comparing  this  with  the  O2  measures,  we  have   for  the 
apparent  proper  motion  of  A,  assuming  C  to  be  fixed : 
o"2i3    in     H7?4 

h  1329  and  star  12.3  m 
1909.071  i8s?3  82^67 

.148  185.7  82.03 


1909.11  185.5 

This  is  im  /  and  13'  «  of  ^  1658. 


6215. 

R.  A.  12" 


1908.214 
.252 
.266 


2  1659.     (8.0. 
29™  32"        Decl.  - 

A  and  C  (u.o) 
69?  1 2 
69.40 
69-30 


82.35 


.8.1) 
-11°  23' 


36.82 
36.48 


1908.24 


1908.214 
.252 
.266 


69.27 

B  and  C 
iio?o8 
109.90 
i 10. 20 


36.64 


4i"°7 
41.14 
41.04 


1008.24 


1908.214 
.252 
.266 


i ro. 06 

A  and  F 
I42?70 
142-39 

142.53 


41.08 


200:21 
200.40 
200.93 


1908.24 


M2.54 


200.51 


183 


Bnrnham:   Measures  of  Proper  Motion  Stars 


A  and  E 
1908.214           275?8o            168780 
.252           275.87            169.41 
.266           275.83            169.25 

E  and  F 
1907.006            ni?o               04:10 
•137             110.9               93-35 
.214             in.  3                93.60 

1908.24             275.83            169.15 

A  and  D 
1908.214             27?6o            184:76 
•252             27.53            184.99 
.266             27.68            184.96 

1907.12              in.  i                93.68 

C  and  D 
1907-214            265^6                32':45 
.233            265.8                32.63 
.258            265.3                32-48 

1908.24               27.60            184.90 

F  and  E 
1908.214       AR.  A.  —  290:87       A  Decl.  +  177:13 
.252                        290.76                        177.42 
.266                        290.78                        177.29 

1907.23              265.6                32.52 

A  and  C 
1007.137            3o6?6               62:49 
.214           306.2               62.48 
•  233            306.4               62.54 

1908.24                         290.80                        177.28 

Struve's  A,  B  and  C  are  symmetrically  placed  in  the  equi- 
lateral triangle  of  large  stars,  DEF,  the  last  two  being  Lalande 
23531  and  23545.    The  only  measures  are  by  Dembowski: 
AF        1870.09         I43°83         198:32         3n         A 

1907.19             306.4               62.50 

BandC 
1907.214            329?6               s6"59 

-233           329-5               56.77 
.258           329-0               56.67 

AE        1870.99         276.33         175-51         3n         A 
AD        1870.99           25.90         184.08         3n         A 
FE        1870.99         301.62         342-29         3«         A 
FE        1908.24         301.37         340.58         3n         p 

Evidently  these  large  stars  have  some  proper  motion  as  well 
as  AB,  the  amount  of  which  will  more  definitely  appear  here- 
after. 
E  has  an  exceedingly  faint  companion  : 

E  and  e  (15.5) 
1909.304           233?6               11:16 

h  1327  is  about  2™  directly  />  E,  but  too  diffuse  for  measure- 
ment. 

6218.    2  1662.     (7.7...io.o) 
R.  A.  12"  30"  16'       Decl.  +  57°  14' 

1907.217           234?o               19*72 
7.271            234.3               19-65 
8.039           234-9               19-70 

1907-23             329-4               56.68 

The  meridian  positions  of  the  large  stars,  A,  E  and  F,  in 
Lament  and  Weisse  show  no  material  relative  change,  and  it 
is  at  least  probable  that  the  change  in  AB  is  due  to  the  proper 
motion  of  the  smaller  component.    To  determine  this  hereafter, 
the  small  stars,  C  and  D,  measured  by  Doolittle,  are  connected 
with  the  principal  components.     The  only  previous  measures, 
of  the  angles  at  the  Temple  Observatory,  are  too  discordant 
for  use  in  this  connection. 
The  measures  of  AB  by  'S  and  p  (1830-1904)  give  for  the 
apparent  motion  of  A  : 
o"i6r     in     i8?9 

6229.    2  1665.    (8.  5...  9.0) 
R.  A.  12"  32™  30'       Decl.  —  4°  40' 

1910.  186             99?8                8:72 
.206             98-3                8.97 

IOO7.SI                 21-1.4                   10.  60 

.244             99.5                8.90 

Perhaps  a  small  advance  in  the  angle. 

6225.    2  1664.    (7.  7...  8.8) 
R.  A.  12*  32"  7'       Decl.  —  10°  51' 

1910.21              99.2                8.86 

No  change,    h  1375  's  about  15'  distant,  nearly  /;  small  and 
bright  in  the  middle. 

h  1375  and  star  11.7  m 
1910.186            30i?3              181:75 
.206            301.2              181.63 

A  and  B 
1007.006           24i?4               23:84 
.137           241.8               24.03 
.214           241.3               24.19 

1910.20              301.2              181.69 

1907.12             241.5               24.02 

AandE 
1907.006            I09?35            118:85 
.137            109.80            118.74 
.214            109.50            118.95 

o«oU.     o  039.     (8.O...9.3J 
R.A.  I2"32m33'        Decl.  —  3°  43' 

1911.302             io;?93              52:37 
.356            107.78              52.65 
-373             107-98              52-67 

1907.12              109.55            118.85 

1911.34              107.90              52.56 

184 


Burnham:   Measures  of  Proper  Motion  Stars 


The  early  distances  by  H  and  O2,  each  on  a  single  night, 
appear  to  have  considerable  errors.    The  four  positions  (1881- 
1911)  give  for  the  proper  motion  of  A  : 
o"o49    in    3S6?4 

When  further  measures  are  made  after  a  suitable  interval, 
the  single  measure  of  1881  should  be  rejected  as  the  distance  is 
doubtless  too  small. 

6237.    H  2617.    (7.  9...  10.  3) 
R.  A.  12"  34™  51'        Decl.  +  40°  47' 

1907.217                3°8                  5*23 
7.271               5-8                5-34 
8.039               7-8                 5-Si 

6263.     2  1678.     (6.  3...  7-0) 
R.  A.  I2"  39"-  26'       Decl.  +  15°  2' 

1912.236            191  ?8$             32"68 
.255            191.88             32.53 
.258            191.50             32-40 

1912.25              igi-74             32.54 

Probably  a  system  of  the  61  Cygni  class.    (See  General  Cata- 
logue, Part  II.)    Unfortunately  there  is  no  third  star  available 
for  measurement.    The  proper  motions  of  A  and  B  are  still 
uncertain.    The  latest  by  Boss  is  : 

A         o'tes    in      38^3 
B         0.020    in    287.8 

6267.     O2  255  rcj.     (7.0...  12.0) 
R.  A.  I2h  40™  8«       Decl.  +  3°  7' 

1907.006           340°3               i8"75 
.120            339-5                J9-29 
.173            339-6                18.89 

1907.51                 5-8                S-36 
No  early  measures. 

6239.     2  1669.     (6.5...  6.5) 
R.  A.  12"  35™  3'       Decl.  —  12°  21' 

A  and  C  (10.3) 
1911.302            233?93              59''33 
.356            233.77              59-39 
•  373            233.93              59-45 

1907.10              339.8                18.98 
Some  change  in  the  angle. 

6268.    2  1679.    (8.  5...  9.0) 
R.  A.  12"  40™  28'        Decl.  +  50°  29' 

A  and  B 
1908.060            207?4                  5"/o 
.118            207.5                  5-6o 
.192            208.3                  5-76 

1911.34              233.88              59.39 

For  the  proper  motion  of  AB.    C  is  SD  (12°)  3675. 
The  relative  motion  in  AB  is  very  small,  and  these  stars 
probably  form  a  system  of  the  61  Cygni  class.     The  proper 
motions  are  given  by  Boss  : 
A        o"i29    in    26c>?6 
B         0.117    in    271.0 

6242.     27  yirginis.    H  VI.  81.     (6.  5...  9.2) 
R.  A.  12"  35™  32'        Decl.  +  1  1  °  5' 

1910.280            28i?8o              84:33 
.299            281.92              84.63 
.318            281.70              84.30 
.320            281.55              84.41 

1908.12              207.7                 5-69 

A  and  C  (12.4) 
1908.192              39?  10              69*89 
.249              38.75              69.47 
.266              39-02              69.65 

1910.30              281.74              84.42 

The  two  P  measures  give  nearly  the  same  proper  motion  of 
A  as  that  in  the  catalogues,  but  a  longer  time  interval  is  neces- 
sary for  a  final  correction  to  the  meridian  value. 
Auwers         o"i55    in    271?! 
Bossert          0.162    in    266.5 
Boss              0.114    in    269.0 

6259.     2  1675.     (8.  3...  9.0) 
R.  A.  12"  38™  40*        Decl.  +  35°  4' 

1908.192                7?2                3o"39 
8.249                7-3                30.49 
9.071                7.0                30.47 

1908.24               38.96              69.67 

No  change  in  AB.    The  third  star  is  measured  for  the  first 
time  to  determine  hereafter  the  proper  motion  of  A. 
A.  G.  Harv.     0^083    in    90° 

6269.    A.  G.  181.    (9.  4...  9.  6) 
R.  A.  1  2"  41  m  28'        Decl.  +  34°  36' 

1908.000            340?5                  i"93 
.079            335-5                  1-69 
.249            340.3                  1.51 

1908.11              338.8                  1.71 

The  wrong  star  was  examined  in  1904. 
No  other  measures. 

1908.50                 7.2                30.45 
Very  little  change,  if  any. 

185 


Burnhatn:   Measures  of  Proper  Motion  Stars 


6274.    8642.    (8.6...  8.8) 
R.  A.  12"  42m  49'       Decl.  +  14°  42' 

1912.162             28?83             59*98 
.164             28.45             60.  10 
.236             28.48             60.12 

The  proper  motions  in  A.  G.  Berlin  are: 
A         o"o6o    in    289^5 
B         0.042    in    270.0 

As  there  has  been  no  change  in  these  stars  in  more  than  80 
years,  it  is  evident  the  motions  are  exactly  the  same. 

A  and  C  (8.0) 
1909.340            325°70            246^84 
.342            325-53            246.70 
•359            325-83            246.63 

1912.19               28.59             6o-°7 

No  third  star  near  for  comparison.    One  of  the  nearly  equal 
components  has  a  small  proper  motion.    The  four  positions  by 
P  and  Doo  on  13  n  (1879-1912)  give  for  this  movement: 
o"o86    in    i62?8  (±  180°) 

h  1431  is  65"  p  and  18'  s;  large  and  diffused. 

6284.    2  1682.    (6.  7...  9.0) 
R.  A.  I21'45ln8'       Decl.—  9°  41' 

A  and  B 
1911.302            304^0               3i"i2 
•356           305.0               30.98 
-375            303.8                31-22 

1009-35              325-69            246.72 

C  is  Lalande  23970.     There  are  no  very  accurate  positions 
for  comparison  : 

1823.44           329?4           249*67            in            Sh 
1826                327.6           259.2                            Weisse 
1870                325.2           248.7                          A.  G.  Ber. 

6292.     32  and  33  Comae.    2  23,  App.  I.     (5.  3.  ..6.1) 
R.  A.  12"  46m  14'       Decl.  +  17°  43' 

1910.203             49?52            I94"78 
.206             49.53            195-49 

.222                   49.8O                 195.20 

•225              49-95            I95-" 

1911.34              304.3                31.11 

The  proper  motion  of  A  from  the  measures  is  : 
0"04S    in    35i  °7 

B  and  C  (n.i) 
1911.302           200^78            143*68 
.356           200.74            143.68 
.375           200.95            144-24 

1910.21                49-70             195.15 

A  and  DM  (17°)  2549 
1875            AR.  A.  —  62!  3       A  Decl.  —  12072       A.  G.  Ber. 
1910.19                        62.2                        120.4       P 

The  proper  motion  of  AB,  if  any,  is  very  small. 
As  there  has  been  no  material  change  in  these  stars  since 
1836,  whatever  proper  motion  there  is,  is  common  to  both. 
We  have  from  the  star  catalogues  : 

A       0*050    in    270^0       Auwers 
0.023    in    205.5        Boss 

B        0.065    in    138.8        Auwers 
0.049    in     148.5        Boss 

6293.    II  2621.    (8.8...  8.8) 
R.  A.  T2"  46™  25"       Decl.  +  7°  52' 

A  and  B 
1007.120             84?7               34*84 
-137             85.2               34.06 

1911.34             200.82            143.87 

6287.    30  Comae.    H  522.    (6.0.  ..11.7) 
R.  A.  12"  43-  26'        Decl.  +  28°  12' 

1912.236              I2?o8             42*67 

•255              12.73              42.46 
.274              13.20              42.31 

1912.25                12.97              42.48 

The  place  given  in  Part  I  of  the  General  Catalogue  is  that 
of  31  Comae,  which  is  2™  25"  following,  same  declination.    The 
R.  A.  should  be  as  given  here. 
From  the  four  fj  measures  of  the  small  star  (1878-1912)  the 
proper  motion  of  30  Comae  is: 
0^067    in    295?8 

This  has  been  given  from  meridian  positions  : 
Auwers         ofns    in    287?7 
Boss              0.096    in    276.7 

6289.    2  1685.    (6.8...  7.  3) 
R.A.I2»45"59'       Decl.  +  19°  49' 

A  and  B 
1909.342            20i?i                I5"03 
•359            201.6                15.84 
,378           201.  I               15.75 

1907-13               85.0               34-90 

A  and  C  (10.5) 
1907.120            I28?2               38*05 
.137            129.2               38.32 

1907.13                  u,X  7                   38.18 

No  other  measures. 

1909.36             201.3               15-84 

186 


Burnham:   Measures  of  Proper  Motion  Stars 


6302.    2  1688.    (8.5...  10.  o) 
R.  A.  12"  47™  S3'        Dccl.  +  38°  37' 

A  and  C  (12.3) 

1912.236     359°98      /6"95 
359.83      77.29 


.255 
.312 


360.06 


76.04 


1912.27  3S9-96  77-o6 

For  the  supposed  proper  motion  of  AB. 


6307.     2  1689.     (6.  7...  9.0) 
R.  A.  12"  49™  29'        Decl.  +  12°  9' 


1909.340 
.342 
.359 


209.7 
210.6 


28.49 
28.75 


1909.35 
Change  in  angle. 


209.9 


28.62 


6308.     8  yirginis. 
R.A.  I2h49m34'        Decl. +  4°  3' 
This  star  is  given  in  Part  I  of  this  work. 


6309.     2  1691.     (8.  2...  9.0) 
R.  A.  12"  49m  50'        Decl.  +  58"  49' 


1910.206 
.222 
.225 


275.3 
276.0 


18.43 
18.78 


1910.22  275.8  18.69 

No  measures  since  1867. 

A  and  DM  (58°)  1403  (9.1) 

1910.206  86? 20            13 i "08 

.222  86.50            130.95 

.225  86.48            130.83 


1910.22  86.39 

No  other  measures  of  this. 


130.95 


6315.    ^.  1693.    (9.0...  9.  7) 
R.  A.  12"  50™  36'        Decl.  +  7°  40' 

8"36 
8.89 
8.65 


1907.006 
.120 
•  137 


331.9 
332-2 


1907.09 
No  sensible  motion. 


331.9 


8.63 


6318.    2  1695.    (6.  3...  8.2) 
R.  A.  I2h5im3'        Decl.  +  54°  45' 

A  and  C  (10.9) 
1909.071  I4i°43  l25'/o8 


.109 

.164 


141.40 
141.70 


124.48 
124.37 


1009.11  141.51 

For  comparison  we  have  : 

1880.12  142^22  I23"6o 


124.64 


Bl. 


The  measures  indicate  proper  motion  of  A  of  about  o"o6  in 
270°.  The  observations  should  be  continued  after  a  suitable 
interval. 

The  proper  motion  from  the  catalogues  is : 
Auwers        o"oo4    in    27o?o 
Kustner        0.093    ln    266.3 
Bossert          0.095    in    270.0 
Boss  0.075    in    265.4 


6337.    44  Virginis.    21704.     (6.0...  11.2) 
R.  A.  I26  53m  29'       Decl.  —  3°  10' 


1912.274 
.296 
•  312 


54.0 
53-5 


20.83 
20.  79 


1912.29 


53.7 


20. 


There  has  been  no  material  relative  change  in  80  years.  The 
proper  motion  is  small,  and  apparently  common  to  both  com- 
ponents. 

Auwers         0*055    >n    280^5 

Boss  0.029    in    262.0 


6342.     46  yirginis.    A.  G.  Clark  5.     (5.  4.. 
R.  A.  12"  54™  25"        Decl.  —  2°  43' 


.  8.  2) 


A  and  C  (13) 

1912.236  I2I?6 

.296  122. o 

.312  122.3 


36.56 
35-74 


1912.28 


122.0 


36.02 


The  proper  motion  is  small  and  not  very  certain. 
Auwers         o"o89    in    3i6?2 
Boss  0.055    in    326.9 

The  first  measure  is  on  a  single  night,  and  therefore  entitled 
lo  small  weight.  The  three  measures  taken  together  show  that 
the  proper  motion  is  not  less  than  o"io,  and  that  it  is  nearly 
all  in  declination.  Further  measures  will  give  an  exact  value. 


6359.     H  2633.     (9-  6...  9-  6) 
R.  A.  12"  56"  55'        Decl.  +  74°  21' 


1909.263 
.299 


91?! 
91.1 


4.91 


1909.28 

No  other  measures. 


91.1 


4.93 


187 


Burnham:   Measures  of  Proper  Motion  Stars 


6371.    2  1715.    (8.  6...  9.  6) 
R.  A.  12"  58™  9'       Decl.  +  20°  2' 

1910.  184           23o?4                7725 
.186           229.9                 7-22 
.203           231.1                 7.38 

6412.    O2  (App.)  121.    (6.  5...  9.  7) 
R.  A.  13"  5m  12'       Decl.  +  62°  52' 

1909.071                8?95             107754 
.112                9.28            107.60 
.164                9.44            107.83 

1910.19             230.5                 7.28 
Probably  fixed. 

6385.    p  1083. 
R.  A.  1  3*  o™  27'       Decl.  +  29°  40' 

A  and  BC  (6.0.  .  .11.5) 
1909.170           216?!                 6^22 
.227            217.4                6.10 
.263           218.5                 6-04 

1909.12                  9.22            107.66 

If  the  larger  star  has  any  proper  motion,  the  other  is  moving 
with  it. 
Greenwich      o7o28    in    228?! 

6414.     53  Virginis.    H  2645.     (5-2...  12.  5) 
R.A.  i?sm4f>'       Decl.  —  15°  33' 

A  and  B 
1908.156               6?37             78750 

1909.22             217.3                 6.12 
A  and  h  1531 

9.170               6.62             79.65 
9.304               7-00             79.68 

1909.227             35?8              149*25 

h   1531   is  small   and  diffuse,  but  with  some  central   con- 
densation.   No  proper  motion  found  for  the  large  star.    Not 
in  Boss'  General  Catalogue. 

1908.88                6.66             79.28 

A  and  C  (10) 
1908.156           328^38           234:'8o 
.192           328.14           235.23 
•370           328.35            234.90 

6396.    8647.    (7.  5...  9-  3) 
R.  A.  13*  2"  19'       Decl.  —  2°  2' 

1909.071            2i3?27             41795 
.148           213.48             42.07 
.164           213.52             42.00 

1908.24             328.29           234.98 

The  distant  star  was  at  first  taken  for  that  measured  by  Doo- 
little  in  1897.     Subsequently  that  was  looked  for  among  the 
bright  stars  in  this  part  of  Virgo,  but  could  not  be  found. 
The  measures  of  B  are  continued  for  an  independent  determi- 
nation of  the  proper  motion  of  A.     The  f)  measures   (1878- 

1909.13             213.42             42.01 
Probably  fixed. 

6405.     0  Tirginis.    21724.     (4.0...  9.0) 
R.  A.  13'  3"  44-       Decl.  —  4°  54' 

A  and  C  (9.0) 
1910.167            298?6o             71*25 
.203            298.45             71.08 
.206           298.43             70.84 

0^304    in     163?! 

Other  values  of  this  from  meridian  positions  are  : 
Auwers         07285    in    i68?6 
Hedrick        0.302    in     161.5 
Boss              0.314    in     163.1 

6425.    S648.    (8.0...  8.0) 
R.  A.  13"  7™  16'       Decl.  +  18°  40' 
1909.071             66°7               87*13 

1910.19             298.49             71.06 

.112             66.6               87.45 
.148             66.5               87.72 

The  measures  of  this  star  should  be  continued.    The  proper 
motion  of  *  Virginis  is  given  : 
Auwers         0^074    in    240?! 
Newcomb      0.059    'n    227.8 
Boss              0.057    in    222.8 

The  Herschel  nebula,  II.  185,  about  40"  />  and  9'  n,  has  a  well- 
defined  nucleus  for  measurement. 

Nebula  and  star  10.5  m 
1910.203            I93?8             163725 
.244            194.0             163.60 

1909.11               (>*,.<,               87.43 

,  The  cluster,  h  1558,  is  about  10'  «.    In  the  General  Catalogue 
the  Dreyer  number  should  be  5024  instead  of  5053.    The  latter 
(h  1569)  is  some  distance  following. 

6431.    Sh  162.    (7.0...  8.0) 
R.  A.  13"  8™  39'        Decl.  —  10°  43' 
A  and  B 

1910.22              193.9             163.42 
For  comparison  we  have  : 

1909.071             50.60             73-73 
.148             49.80             74.18 
.164             50.44             74.14 

'875.31           192^8           i62"o           Wn. 

1909.13               50.28             74.02 

188 


Burnham:   Measures  of  Proper  Motion  Stars 


The 

five  positions  by  O2,  Eng  and  P  (1840-1909)  give  for  the 

6452.    H 

529.     (9.3.. 

.n.o) 

proper 

motion  of  A: 

R.  A.  13"  13™ 

59'       Decl. 

+  35°  47' 

o"37i     in    2is?9 

But  B  is  not  a  small  star,  and  might  have  some  movement  of 
its  own;  I  have  therefore  measured  a  third  faint  star. 

These  small  stars  have  a 
Porter 
Kustner 

large  common  proper  motion  : 
o'/ooo    in    I54?6 
0.874    in     154-9 

B  and  C  (12.3) 

The  star  measured  by 

Ball   is  now 

too   distant   for  good 

1909.071            I34°97             69*10 

measures.    I  have  therefore  measured  a 

nearer  star  in  the  field. 

.148            135-10             68.36 

.164            134-97             68.90 

A  and  C  (11.6) 

1909.13              135-01             68.79 

1009.170 

74-70 

152.50 

-263 

74-95 

152.62 

The 

proper  motion  of  A  from  meridian  observations  is  : 

.299 

74-78 

152.68 

Porter           o?388    in    219°.  4 
Kustner        0.395    in    216.9 

1909.24 

74-81 

152.60 

6434.    2  25,  App.  I.    (5.  9...  6.  3) 

6458.    S 

1735-     (9-5- 

--9-5) 

R.  A.  13"  9m  23'       Decl.  +  67°  55' 

R.  A.  13"  15™  44'       Decl 

+  6°  27' 

A  and  C  (7.8) 

1907.137 

I09?6 

3"95 

1907.214            229^6              n6''5l 

.258 

no.  6 

4.10 

.217           229.4             116.12 

-331 

109.8 

3-97 

.258           229.8             116.21 

1907.24. 

IIO.O 

4.01 

1907.23             229.6             116.28 

Without  change. 

A  and  B  (6.3) 

1907.217            296?!              I78"88 

.258           296.3              178.83 

6474.    ^ 

1740.    (7-i 

-.7.2) 

1907.24             296.2             178.85 

R.  A.  13"  17™  33'        Decl 

.  +  3°  20' 

The 

six  sets  of  measures  of  AC  (1835  to  I9°7)  give  for  the 

1911.142 

75°3 

26':6o 

apparent  proper  motion  of  A  : 

.162 

75-7 

26.64 

0:169    in    270:5 

.164 

76.1 

26.54 

C  appears  to  have  no  motion  in  space.    A  and  B  have  shown 

1911.16 

75-7 

26.59 

no  relative  motion  since  1835,  and  therefore  they  must  have  the 
same  proper  motion.    From  the  catalogues  we  have : 
A        o"i57    in    274?4        Schroeter 

0.157    in    271.1        Groombridge 
B        0.148    in    270.0        Schroeter 

0.158    in    274.7        Groombridge 


6442.    fJ  800.    (7.  i.  ..10.  2) 
R.  A.  13"  iora  52'       Decl.  +  17°  40' 

A  and  B 
1907.331  m?2  2?95 


9.302 
9.304 

110.3 
in.  3 

3-33 
3-i8 

1908.65 

1909.302 
.304 

110.9 

A  and  C  (n.o) 
9°58 
9.20 

3-15 

89"3i 
89.69 

1909.30  9.39  89.50 

The  last  for  the  proper  motion  of  AB.    No  other  measures. 
The  motion  of  the  large  star  is  given  : 

Krueger        o''697    in     H3?6 
Porter  0.675    m     m  -9 

13 


No  third  star  near  enough  to  measure. 
These  stars  appear  to  make  a  system  of  the  61  Cygni  type. 
The  relative  change  is  very  slow.     The  proper  motions  are 
given : 

A  0*217  in  6?o 
0.201  in  351.9 
0.202  in  359.5 
360.0 


B 


0.254    in 
0.248    in    323.3 


Porter 
Glasgow 
A.  G.  Alb. 
Porter 
Glasgow 


6475.    H  226.    (11.9.  ..13.1) 
R.  A.  13"  17™  36'       Decl.  +  14°  38' 


1909.071 
.302 


23.7 


9.82 


24.2 


9.65 


1909.19 

Very  insignificant  object;  no  other  measures,    h  1595  is  in  a 
low-power  field  with  H  226. 

h  1595  and  DM  (14°)  2609  (9.3) 


1909.071 
.302 


8i?3 
81.3 


107^04 
107.09 


1909.19 


81.3 


107.06 


189 


Burnham:   Measures  of  Proper  Motion  Stars 


6477.    2  1741.    (8.2... 9.7) 

R.  A.  13*  i8m  4'        Decl.  —  I  °  29' 


1907.137 
.233 

.258 


262?8 
262.4 
262.5 


2493 
24.92 
24.78 


262.6 


24.* 


1907.21 

No  change  since  1828. 

The  stars  measured  by  Glasenapp  are  DM  (—1°)  2814  and 
2813: 

1907.233  245?6  64^66 

.258  246.0  64.83 

1907.25  245.8  64.74 

The  only  other  measures  are  given  in  the  General  Catalogue. 

6493.     Z  1746.     (7- 7-.. 10.3) 
R.  A.  13"  22™  1 1-        Decl. +  10°  5' 


1907.137 
•233 
.271 


249.4 
249.7 
249.8 


27"  1 1 
26.87 
27.05 


1907.21  249.6  27.01 

Change  in  distance.    From  the  measures  the  proper  motion  of 
the  principal  star  is  : 

o"o35    in    202?9 


6498.    O2(App.)i23.    (6.  4...  6.  8) 
R.  A.  13"  23-  2-       Decl.  +  65°  22' 

A  and  B 
1910.280  I46?92  69706 


.282 
.299 


146.95 
147.00 


69.01 
68.86 


1910.29  146.96  68.98 

The  proper  motions  of  the  large  stars  (Groombridge  1996 
and  1997)  are  given  from  meridian  positions : 

A        o"ii7    in    295?9        Schroeter 

0.071     in    317.5        Groombridge 
B        0.098    in    289.1        Schroeter 

0.067    in    320.9        Groombridge 

As  there  is  no  relative  change  in  these  stars,  the  proper 
motions,  if  any,  would  be  exactly  the  same.  To  determine  this 
movement  later,  I  have  connected  a  faint  star. 

B  and  C  (12.4) 

1910.280  92?23  32?93 

.282  91.88  32.93 

.299  92.20  32.93 


1910.29 


92.10 


32.93 


6501.     R  Hydrae.    Ho  381.     (Var...n.8) 
R.  A.  13*  23"  10'       Decl.  —  22°  39' 


1910.244 

•  307 

•  375 
1910.31 


324-7 
323.9 

324.5 


2iT8o 
21.31 
21.67 

21-59 


The  proper  motion  is  small : 

Boss      o7o73    in    273?! 

The  measures  of  the  small  star  will  give  an  independent  value 
later  on. 

6502.     2  1748.     (8.o...ii.o) 
R.  A.  13"  23'"  24'        Decl.  +  22°  48' 

A  and  B 

i8i?9  5"85 


1911.200 
.219 


179-7 


5.89 


1911.21 


iSo.8 


5.87 


A  and  C  (10.7) 

1911.164     353?27  149778 

.184     353.42  149.99 

•219     353.42  150-48 

I9".I9      353-37  150.08 

No  other  measures  of  C.    A  and  B  have  a  common  prop 
motion : 

A.  G.  Ber.      07257    in    276?7 

6508.     8649.     (5. 5... 8.0) 

R.A.  13"  24"  3*       Decl. +  60°  34' 

A  and  BC 


1911.184 
.200 
.219 

.222 


110-45 

"0.35 
110.55 


I&^S 
I8I.66 
l8l.94 
182.07 


1911.21  "0.45  181.99 

No  measure  of  this  since  1824.  If  the  measure  at  that  tir 
was  substantially  correct,  A  and  BC  have  a  common  prop 
motion.  B  and  C  make  2  1752.  From  meridian  observations: 

1875  no!4  182^7  A.  G.  Hels. 

The  proper  motion  of  the  principal  star  is : 

Groombridge       0*091     in    295?5 
Auwers  0.069    in    276.7 

Boss  0.091     in    292.0 

6511.     2  1751.     (7. 5... 10. 7) 
R.  A.  13"  24™  41'        Decl. +  9°  56' 


1907.258 
9.340 
9-342 


58?4 
59-1 
57-1 


5-T85 
5.8o 
5-94 


58.2 


5-86 


No  change. 


6512.     O2  268  rej.     (7.0. ..12. 5) 
R.A.  I3b25m8'        Decl.  +  24°  51' 

A  and  B 

1908.249  75  ?2  19725 

.266  76.5  18.95 

•383  75-9  19.81 


1908.30 


75-9 


19.34 


190 


Biirnham:   Measures  of  Proper  Motion  Stars 


_ 


, 


. 

serv; 
The! 
direi 

! 


A  and  C  (7.4) 
1908.249            258?42              69"83 
.266            258.18              69.81 
.271            258.50              69.89 

6529.    8650.    (8.0...  8.  7) 
R.  A.  13"  28™  9'       Decl.  —  12°  49' 
1909.381             137-77              49"  10 

1908.26              258.37              69.84 
A  and  D  (12.2) 

10.225             137.58              49.96 
10.244            136.72              49.62 
10.299            I37-98              49-72 

1908.249              2g?38              84"82 
.266              29-35              84.44 
•  383              29.85              84.62 

1910.04              I37-SI              49-6o 
The  change  is  due  to  the  proper  motion  of  one  of  the  stars. 

1908.30                29.53              84.63 

om  five  positions  of  AC  (1876  to  1908),  each  on  three  or 
:  nights,  the  apparent  motion  of  the  principal  star  is  : 

o"o8o    in    55?s 

continuation  of  the  measures  of  AB  and  AD  will  show 
her  or  not  there  is  any  motion  in  C. 
e  proper  motions  by  Rechenberg  are  : 

A        o"o63    in      72?4 

6540.     H  1234.     (7.  2...  10.  9) 
R.  A.  13"  29™  4*        Decl.  +  39°  24' 

1908.249              22?4                32"53 
8.266              22.  o                32.62 

9.263                    22.6                      32.24 

C        o.oio    in     173.8 

6524.     02269.     (6.  5...  7.0) 
R.  A.  13"  27™  26'        Decl.  +  35°  3i' 

AB  and  C  (9.0) 

1910.091            332^38             n6"72 
•°93            332.08            116.81 
•107            332.30            116.93 

1908.59             22.3             32.46 

The  large  star  is  Groombridge  2013  which  is  given  a  proper 
motion  o''o4O  in  35i?8.    No  early  measures. 

6558.     81  yirginis.    ?  1763.     (7-S---7-S) 
R.  A.  I3"3imi8'        Decl.  —  7°i6' 

A  and  C  (11.4) 
1912.312            327°S3             I4o"93 
•3SI            327-63             140.92 

1910.10              332.25             116.82 

•353            327.73             141-24 

s  DM  (35°)  2461.    The  earlier  measures  are  discordant  in 
nee: 

877-46           332?92            ii4'.'64           in           Bl 
880.05           332.65            116.53            m            Bl 
880.12            332.47            115.04            in            Bl 
880                 333.3              114.3                             A.G.Lund. 

640  is  20'  distant  sf.    There  is  a  star  n  m,  239°  :  45"8,  but 
la  too  diffused  for  good  measures. 

6528.     (3  114.     (7.  6...  8.0) 
R.A.  I3h28'"o'        Decl.  —  8°  o' 

1908.252            I4i?9                  1^48 
.266            142.1                  1.45 

1912.34              327-63            141-03 

No  change  in  AB.     The  proper  motion  of  81  yirginis,  if 
any,  is  so  far  uncertain. 
Auwers         o"o6i     in    228?2 
Boss              0.019    in    248.6 

6571.     2  1769-     (7-3-.  -9-7) 
R.  A.  13"  32™  50'        Decl.  +  39°  47' 

The  three  'S  stars  appear  to  have  a  common  proper  motion 
of  about  o''25,  and  to  verify  this,  I  have  connected  a  third  star 
with  A  and  C. 
A  and  D  (11.3) 
1909.170            I94?8o            i68"4i 
.244            195-45             168.55 
.263            195-05             168.15 

1908.26              142.0                  1.46 

is  pair  was  observed  by  Glaisher  at  the  Cambridge  Ob- 
itory  in   1842  who  used   it   for  comparison  with   Mars, 
e  measures  are  of  special  interest  as  confirming  the  slow 
t  motion  shown  by  the  later  observations. 

1909.23              195-10            168.37 

C  and  D  (8.  2.  ..11.3) 

1909.170            i/5°40            I52"o7 
.244            175-88            152.26 
.263             175-72            152.16 

1842.33            I26?8            i"38           2n 

1009.23              I75-67            152.16 

191 


Burnham:   Measures  of  Proper  Motion  Stars 


The  proper  motion  of  A  is  given: 
Stumpe                o7262    in    24i?3 
Porter                 0.242    in    239.0 
Groombridge       0.247    in    238.0 

6578.    P  612.    (6.0...  6.0) 
R.  A.  13"  33™  40"       Decl.  +  11°  21' 

AB  and  C  (11.5) 
1912.236           274^78            130789 
.274           274.73            130.23 
.312           274.67            129.74 

It  is  obvious  from  the  magnitudes  that  this  proper  motion 
may  be  in  either,  or  both.    I  have,  therefore,  connected  a  third 
star: 
A  and  C  (9.9) 
1908.156            339°78            114704 
•370           340.02            113-99 

1908.26             339-90            114.01 
C  is  SD  (9°)  3766. 

6616.    P  115.     (8.0.  ..ii.  5) 
R.  A.  13"  39™  24'        Decl.  +  9°  40' 

A  and  C  (12.3) 
1911.222            I7o?so            115712 
.260            170.25            115.20 
.337            170.47            114-62 

1912.27             274.73            130.29 

Measured  for  the  proper  motion  of  the  binary  system.    This 
has  been  given  : 

Boss     o7ii2    in    264^4 

6584.    H  4605.    (8.0...  9.7) 
R.  A.  13'  34m  28'       Decl.  —  29°  18' 
1911.219           288?o              17729 

The  nebula  referred  to  by  Herschel  as  following  H  4605  is 
/>  3528. 

6589.    2  1774  r<?/.    (7.0...  10.2) 
R.  A.  13"  35™  39"        Decl.  +  51°  7' 

1911.142            I34?3               I7"75 
.184            133-7               17-89 

.200               134-3                   17-97 

1911.27             170.41            114.08 

For  the  proper  motion  of  A. 
Bossert      07132    in    213^9 

There  is  no  material  change  in  AB. 

6646.     8655.     (8.5...io.o) 
R.  A.  13*  43™  35'       Decl.  +  18°  17' 

This  star  wrongly  identified  from  W>  in  the  General  Cata- 
logue, and  the  place  given  is  that  of  DM  (18°)  2788  (8.7).    It 
should  be  (18°)  2786  (8.3),  which  is  closely  sf  the  other.    The 
correct  place  (1880)  is  given  here.    The  proper  motion  given 
in  the  General  Catalogue  is  that  of  2788. 
The  principal  star  of  S  655  has  a  small  proper  motion.    Th« 
later  positions  by  Doo  and  P  (1897-1911)  give: 
07076    in    291?! 

Or,  if  the  measure  by  South  is  used: 
o7o62    in    292?3 

A  and  B  (8-5...io.o) 
1907.348             8o?s               38783 
8.039             80.7               39.11 
8.063             80.9               39.38 

1911.18             134.1               17.87 

If  the  principal  star  has  any  proper  motion,  the  companion  is 
moving  with  it.     Unfortunately  there  is  no  third  star  near 
enough  for  comparison.    The  supposed  proper  motion  should 
be  confirmed. 

A.  G.  Harv.      o7i72    in    305?! 

6611.    8652.     (8.0...  8.0) 
R.  A.  13'  38"  59*       Decl.  —  9°  55' 

A  and  B 
1908.156            I34°58             49*02 
.193            134-38             49-12 
-370            134-80             49.01 

1907.82               80.70             39.ii 

1911.241             8o?6o            39756 
.260            80.73             39.59 
.280            80.65             39.57 

1911.26              80.66            39.57 

A  and  C  (12.4) 
1911.260               s?40             61757 
•334               5-07             62.26 

1911.30                 5.23             61.91 

B  and  C 
1911.260           328?7o             64766 
•334           328.77             65.12 

1008.24             134-59             49-05 

The  four  positions  given,  including  South  in  1829,  make  the 
apparent  motion  of  B  : 
o7i53    in    27?0 

1911.30             328.73             64.89 

Burnham:   Measures  of  Proper  Motion  Stars 


6662.     10  Draconis.    H  3342.     (4. 8... 12.0) 

R.  A.  1 3"  47™  56s       Decl.  +  65  °  19' 

A  and  B 


1911.260 
•334 

25?o8 
25-97 

54^56 
54-08 

•  337 

25-43 

54-93 

I9".3i 

25-49 

54-52 

A 

and  C  (ii.o) 

1911.260 
•  334 
•  337 

63?  10 
62.87 
62.96 

90T26 
89.96 
90.28 

62.98 


90.17 


1911-31 

Comparing  the  two  recent  positions  with  the  single  measure 
1879  gives  for  the  motion  of  A : 

AB        R.  A.  +  o:'o2i        Decl.  +  0^038 
AC  +0.049  —0.063 


t  is  evident  there  is  some  error  in  the  unverified  observa- 
tion, and  that  later  on  it  should  be  rejected  as  all  measures 
should  be  when  made  on  a  single  night. 

If  we  take  a  mean  of  the  two  comparison  stars,  the  proper 
motion  of  A  is : 


6668.    2  1788.    (6.g.  .-7-9) 
R.  A.  13"  48™  41  •       Decl.  —  7°  28' 

A  and  C  (10.8) 

1907.197     2Q3°.oo  127*03 

8.039     293.32  126.88 

8.156     293.02  126.71 


1907.80 

293." 

126.87 

A 

and  D  (n.o) 

1907.197 

2I5?IO 

I56"75 

8.039 

215.30 

156.10 

8.156 

215.10 

156.39 

n 


is  motion,  so  far  as  meridian  positions  are  concerned, 
is  wholly  uncertain. 

Auwers  0*017  in  217^3 

Boss  0.004  m  140.0 

Groombridge  0.005  m  292.0 

Davis  o.on  in  257.8 

Newcomb  o.oio  in  223.9 


6664.    02(App.)i27.    (6.3... 8. 2) 
R.  A.  13"  48m  3'       Decl.  +  68°  55' 

A  and  B 

1912.066  65? 15  77"79 


.162 

.164 

64.98 
64.90 

77-52 
77-47 

1912.13 

65.01 

77-59 

B  and  C  (13.0) 

1912.066 

65°67 

44"85 

.162 

65.10 

45.01 

.164 

64.90 

44-92 

1912.13 

65.22 

44-93 

The  relative  motion  from  measures  to  1903  is  given  in  the 
General  Catalogue.  Further  proper  motions  of  the  large  stars 
from  Greenwich  (1900)  are: 

A         o':i95    in    254?9 
B         0.098    in    287.8 

The  faint  star  is  connected  to  verify  the  motion  of  B. 


1907.80  215.17  156.41 

For  comparison  we  have  the  following  measures  by  Engel- 
hardt : 

AC           l886.38  292^28  130*52  2n 

1894.32  292.67  129.69  31 

AD            1886.38  215.83            159-53  211 

1894.32  215.68           158.75  3n 

Comparing  a  mean  of  the  two  positions  with  the  recent 
measures,  we  have  for  the  proper  motion  of  the  large  star : 
From  AC        0*203    in    268^6 
From  AD        0.182    in    246.5 

The  small  difference  is  undoubtedly  due  to  errors  of  observa- 
tion. 
Other  values  of  this  motion  from  meridian  positions  are: 

Stumpe         o'.'207    in    271  ?4 

Auwers         0.207    in    270.0 

Porter  0.215    in    266.3 

Boss  0.166    in    259.6 

6670.     TI  Bootis.    Sh  169.     (2. 7... 9.0) 
R.  A.  13"  48m  58s        Decl.  +  19°  o' 


1909.340 

•  342 

•  359 


I05°i5 
105.23 
105.80 


"3"49 
113-27 
113.68 


1909-35 


105.39 


113.48 


The  six  sets  of  measures  by  OS,  HS  and  f»  (1851-1909)  give 
for  the  proper  motion  of  TI  Bootis: 


From  meridian  positions : 

Auwers  o"35l  in  I9i?4 

Boss  0.372  in  189.9 

Newcomb  0.369  in  189.8 

6676.     02273.     (7. 5-.. 8.0) 
R.  A.  13"  50™  19'       Decl.  +  5°  53' 

AB  and  h  1703 

1910.206  236^5  238*8 

.244  236.3  238.6 

..260  236.6  238.8 

1910.24  236.5  238.7 

h  1703  is  bright,  with  good  central  condensation. 

1875.40  235°8  236*0  in  Wn. 


193 


Burnham:   Measures  of  Proper  Motion  Stars 


6700.    2  1798-    (7.  5...  9-  3) 
R.  A.  13"  S5m  17'       Decl.  +  78°  59' 

1907.271              I3°3                7".2S 
.348             13-9                7-23 

From  the  measures  of  AB  by  2,  A,  O2,  HI  and  (J  (1830-1911), 
and  the  measures  of  the  faint  star  C  (1886-1911)    the  proper 
motion  of  A  is  : 
AB         o"o44    in     164^8 
AC         0.028    in     146.3 

With  a  longer  interval  for  AC,  the  results  would  doubtless 
be  identical. 
The  6  m  star,  D,  is  known  to  have  some  proper  motion  ;  not 
in  Boss'  General  Catalogue.    The  measures  of  D  from  A  of 
2  1831  show  an  apparent  motion  of  D,  assuming  the  other  to 
be  fixed  : 
o:'i25     in    330?8 

6802.     i  Bootis.    2  26,  App.  I.     (4.  9...  7.  5) 
R.  A.  I4hiims6f       Decl.  +  51°  55' 

A  and  C(i2.7) 
1911.260            197?  10             85?75 
.337            197.08             85.62 
-353             197-05              85.59 

1907.31               13.6                7.24 
No  change. 

6701.    T  yirginis.    Sh  171.     (4.  3...  8.  7) 
R.  A.  13"  55™  33'        Decl.  +  2°  8' 

A  and  B 
1912.164           290^03             80".  37 
.236           289.70             79.60 
.296           289.68             79-59 

1912.23             289.80             79.85 

B  and  C  (13.0) 
1912.236             2i?i2            i57"8s 
.274             21.20            158.99 
.296             20.82            158.79 

1911.32              197.08              85.65 

For  the  common  proper  motion  of  AB.    No  other  measures. 
The  motion  of  A  from  the  star  catalogues  is  given  : 
Auwers         o"i7o    in    300^0 
Newcomb     o.  160    in    301.7 
Boss              0.169    in    300.6 

6803.    f3  1246. 
R.  A.  14"  12"'  12"       Decl.  —  25°  16' 
A  and  C  (5.5..  .11.0) 

1910.414             97°98             43"20 
11.260             98.73             42.08 
11.334              98.57              42-87 

1912.27               21.05            158.54 

Complete  measures  on  the  necessary  number  of  nights  to 
give  a  safe  result  are  entirely  wanting  in  the  first  half  century. 
The  measures  of  the  small  star  since  1823  tend  to  show  no 
relative  motion.    I  have  therefore  connected  a  very  faint  star. 
The  proper  motion  of  T   yirginis,  derived   from  meridian 
positions,  is  uncertain  in  direction: 
Auwers         0*033    in    IO2?8 
Newcomb      0.033    in     151.8 
Boss             0.032    in    142.0 

6705.    X  1797-     (8.2...  8.  5) 
R.  A.  13"  s6m  18'       Decl.  +  20°  i' 

1910.148            is8?4               2o"87 
.167            159.5               20-88 
.225            159.4               21-02 

1911.00                98.43              43-02 

From  the  four  positions  of  this  star  (1891-1911)  we  have  for 
the  proper  motion  of  AB  : 
0^439    in    318^9 

From  the  catalogues  : 
Porter           0^458    in    3O7?o 
Boss              0.537    in    313.4 

6813.    fJ  1272.    (8.  4...  9.5) 
R.  A.  14"  13™  22-       Decl.  +  49°  18' 
A  and  C  (8.6) 

1911.260            321  °30              23"-  57 
•337            321.33              23.69 
.353            322.10              23.92 

1910.18             159.  i               20.92 
No  change  since  1828. 

6801.    2  1830.     (8.  5...  9.8) 
R.  A.  14"  ii"  52'       Decl.  +  57°  13' 

A  and  C  (12.5) 
1911.260             8i?3o             35753 
-334             80.  10             35.67 
•  337             80.37             35-55 

1911.31               80.59             35-58 
A  and  D  (5.7) 
1911.260             6i?6o            141*39 
.334             61.87            141-96 
.337             62.00            141.59 

1911.32              321-58              23.73 
No  change  in  AC. 

1911.31               61.82            141.65 

194 


Bnrnham:   Measures  of  Proper  Motion  Stars 


6828.    Ho  384.    (6.5...  12.0) 
R.  A.  14"  ism  42"        Decl.  —  7°  32' 

1907.348              51?  r                27745 
8.192              50.2                27.46 
8.266              49.7                27.36 

6869.     DM  (24°)  2733.    (9.0...  9.0) 
R.  A.  14"  20m  ii»        Decl.  +  24°  12' 

A  and  B 
1907.140              74?4               45735 
•197              74-5                45-26 
.217              74.1                45.01 

1911.164              74.30              45.11 
-184              73.93              45.11 
.200              74.20              45.34 

The  several  mean  results  of  my  measures  of  AB  are  as 
follows  : 

1903.02           74?7           45721            4n 
1904.31            74.5           45.02           3n 
1905.42           74.1           45.22           2n 
1906.12           74.1            45-19           3n 
1907.18           74.3           45.21            3n 
1911.18           74.1           45-19           3n 

It  is  evident  that  these  stars  have  exactly  the   same  proper 
motion.     For  star-catalogue  positions  see  General  Catalogue, 
Part  II. 
A  and  C 
1907.197             H9?8              I77"32 
.217             119.5              177.17 
.258            119.7              177.51 
•331             II9-5              177-19 
1909.112             U9-50            175-29 
.164            119.44            I74-9O 
.186            119-35             I74-96 

1910.164            119.20            173.56 
.167            119.20            173-49 
.184            119.20             173-63 

1911.142             118.83             171.97 
.164            118.78            172-58 
.184            119.12             172.27 

.200                 II8.93                  172.42 

The  results  of  all  my  measures  of  AC  are  : 
1903.02            I20?6           182730           4n 
1904.32            120.2            180.57           2n 
1905.42            120.0           179.34           3n 
1906.18           119.9           178.56           6n 
1907.25            119.6           177.3°           4n 
1909.15            iip-4           175-05           3n 
1910.17            119.2            173.56           3n 
1911.17            118.9           172.31           4n 

A  continuation  of  these  measures  will  give  the  proper  motion 
of  AB  with  the  greatest  accuracy.    It  is  absolutely  certain  from 
the  measures  of  the  exceedingly  faint  star  a  that  C  has  sensible 
movement.    These  measures  give  for  the  proper  motion  of  AB  : 

i?348     in     I45?2 
From  the  Berlin  and  Cincinnati  meridian  positions  we  have: 
Porter        17381     in     143^5 

In  the  proper  motion  of  A  given  on  p.  1076  of  the  General 
Catalogue  from  the  micrometer  measures  of  AC  for  i".6g6  read 
1^382. 

K 

I907-94                S0.3                27.42 

Change  from  proper  motion  of  A  which  should  be  about 
o"i6  in  230°.    Further  measures  will  give  a  definite  value. 

6837.     Z  1833.     (7.0...  7.0) 
R.  A.  14"  i6m  18'        Decl.  —  7°  13' 

B  and  C  (12.3) 
1910.206            i97?23             103779 
.225             196.60            103.36 
.260            196.23             104.09 

1910.23              196.69            103.75 

For  the  proper  motion  of  AB. 
The  large  stars,  AB,  seem  to  belong  to  the  61  Cygni  class. 
The  proper  motion  is  given  : 
Bossert          o7i2O    in     i8o?o 
Radcliffe       0.171     in     185.0 
Porter            0.132     in     180.0 

6840.    H  2714.    (7.  6...  10.  2) 
R.  A.  14"  17""  18'        Decl.  —  19°  15' 

1909.381            279?9               24757 
12.296            279.1                24.55 

1910.79              279.5                24.56 

The  change  is  due  to  proper  motion  in  A.    Further  measures 
after  the  proper  time  interval  will  give  an  accurate  value  for 
this  movement. 
Battermann      0*033    in     IS4°7 

6858.     H  546.     (7.0.  ..10.4) 
R.  A.  14"  i8m  48'        Decl.  —  12°  49' 

1911.222             43?io             40716 
.241              43-io              40.10 

1911.23                43.10              40.13 

The  other  measures  are  of  late  date. 
h  1798  (=  h  3569),  which  is  about  10'  north  of  H  546,  is  too 
diffused  and  indefinite  for  good  measures. 

6864.     H  2720.     (8.  8...  13.  2) 
R.  A.  14"  19™  30'        Decl.  +  47°  i' 

1907.217              29?3                2o'.'ss 
8.063              31.4                20.07 
9.170              31.2                20.21 

1908.15                30.6                20.28 
No  other  measures. 

1 

Burnham:   Measures  of  Proper  Motion  Stars 


C  and  a  (13.5) 
1907.140            i8i?8               5s:'o4 
.197            180.5               SS.i6 
.258            182.4               55-74 
1909.112            181.28             55.53 
.164            181.31              55-49 

1910.186            181.37              55-72 
.244            182.10              55.59 
.280            181.50              55.59 

The  following  are  the  results  of  my  measures  of  this  star  : 
1906.21           i8i?8           55^91           3n 
1907.20           181.6           55.61           sn 
1909.14           181.3           55-Si           2n 
1910.24           181.6           55.63           3n 

6896.    0  117.    (8.  3...  9.  2) 
R.  A.  14"  24m  43'        Decl.  —  15°  4' 

A  and  C  (12.4) 

I9II-395            334-73             107:84 
.411            335-06            107.07 
•414            334-50            106.90 

1911.41              334.76            107.27 
For  proper  motion  of  AB. 
Porter      0:424    in     153^2 

6898.    H  2725.    (8.7...  10.6) 
R.  A.  14"  24""  52'       Decl.  +  55°  3' 

1907.140            I38?7               23:25 
.217            136.2               23.59 
•258            138.4               23.43 

1908.20           181.57         55.66         nn 
It  is  evident  from  the  measures  that  C  is  fixed  in  space. 

6880.    tVirginis.    21846.    (5.  2...  9.7) 
R.  A.  14'  22"  2'       Decl.  —  i  °  41  ' 

A  and  C  (12.8) 

1911.164           209?  13             95-45 
.200           208.98             94.89 
.219           208.28             95.07 
.222           208.97             95-03 

1907.20             137.8               23.42 

Aitken  has  recently  found  that  A  is  a  close  pair  (=  A  16 

6910.    p  Bootis.    H  2728.    (3.  8...  12.  5) 
R.  A.  14"  26™  42'        Decl.  +  30°  54' 

1912.258           336?28             48797 
.274           336.03             48.86 
.296           336.05             48.99 

1911.20             208.84             95-II 

No  other  measures.    The  proper  motion  of  <f>  Virginis  is 
given  : 

Auwers         0*153    in    269°  3 
Boss             0.134    in    265.7 
Newcomb     0.135    in    268.4 

6881.    2  1847.    (8.  5...  9.8) 
R.  A.  14"  22"  14'       Decl.  —  9°  40' 

1907.258           26i?8               25^95 
7.348           261.8               26.13 
8.192           262.8               25.88 

1912.27             336.12             48.94 

The  proper  motion  of  the  bright  star  given  in  the  Gen 
Catalogue  from  the  measures   1879  to  1903  is  not  sens 
changed. 
Measures      o?i6i    in    3io?8 
Bossert         0.151     in    316.9 
Auwers         0.166    in    318.8 
Boss              0.149    in    317.6 

6915.    Y  Bootis.    3  616.    (2.  8...  12.  5) 
R.  A.  14*  27"  15'       Decl.  +  38°  50' 
1911.164            io8?20             31:72 

.222                I08.08                  31.19 
.241                 108.20                  31.37 
.334                I08.4I                   31-93 

•  373            108.38             31.79 

1907.60             262.1               25.99 

A  and  SD  (9°)  3950 
1907.258       A  Decl.  =  :oo"8o 

From  the  measures  of  AB  to  1903  the  proper  motion  of  A  is  : 
oTiop    in    no?7 

6895.    2  1854  rej.    (7.0.  ..10.5) 
R.  A.  14'  24"  41  •       Decl.  +  32°  20' 

1912.312           256?6o             25:77 
•353           256.60             26.05 

1911.27              108.25             31.60 

The  measures  of  this  very  faint  star  should  give  the  prc 
motion  of  Y  Bootis  with  a  high  degree  of  accuracy.    From 
five  P  positions  on  14  n  (1878-1911)  we  have: 

0:218    in    326?7 

Some  of  the  meridian  results  are: 

Auwers         o7io8    in    320?  5 
Boss              0.182    in    322.3 
Newcomb      o.rSo    in    323.6 

1912.33             256.60             25.91 
Probably  without  change. 

196 


Burnham:   Measures  of  Proper  Motion  Stars 


6924.    H  2732.    (8.7...) 
R.  A.  14"  28™  19'        Decl.  +  45°  37' 

This  star  has  no  near  companion.    To  verify  the  supposed 
proper  motion,  I  have  connected  a  distant  star. 

A  and  DM  (45°)  2192  (9.2) 
1910.184            353?77              9i752 
.186            354-13              92-33 
-203            353-55              91-88 

6954.    ji  Bootis.    21864.    (4-9-..  6.0) 
R.A.  14"  35™  5s       Decl.  +  16°  56' 

A  and  C  (10.8) 
1912.164            i6o?43            126733 
.236            160.25            126.48 
.274            160.08            126.10 

1912.22             160.25            126.30 

The  faint  star  is  connected  for  the  proper  motion  of  it  Bootis. 
No  other  measures. 

Auwers          07029    in    17?! 
Boss               0.016    in    82.8 
Newcomb       0.026    in    92.8 

6955.    \,  Bootis.    21865.    (3.  5.  ..3.  9) 
R.  A.  14"  35™  25'        Decl.  -f  14°  15' 

AB  and  C  (10.0) 
1910.397           258762             99779 
.414           258.93             99-66 
.416           259.08             99.76 
.436           258.63             99.30 

1910.19              353-82              91.91 

No  exact  catalogue  place  found  for  the  small  star.     The 
relative  places  in  DM  give  357°  :  54",  which  does  not  corre- 
spond to  the  movement  of  A  from  meridian  observations. 
Porter      07244    in    286?7 

6926.     ^  1858.     (7.  2...  8.0) 
R.A.  I4>28m4i'        Decl.  +  36°  7' 

A  and  €(13.0) 
1910.299            311-82              36796 
.318            310.73              37-11 
.340            311.00              37.13 

1910.32              311.18              37.07 

Faint  star  for  proper  motion  of  A  (Lalande  26599),  which  is 
given  from  transit  positions  : 
Paris             07213    in    283^3 
Porter           0.259    in    285.7 

6932.     Lalande  26492.     (7.0.  ..10.5) 
R.  A.  14"  24™  44s        Decl.  +  5°  18' 

1912.274            I95°40              55721 
.296             195-12              55-44 
.312             195.83              55.40 

1910.42             258.81             99.63 

No  early  measures  of  the  Herschel  distant  companion. 
The  proper  motion  of  the  binary  is  : 

Auwers         07041    in    io8?3 
Porter           0.030    in     109.6 
Newcomb      0.060    in    114.6 
Boss              0.062    in     116.0 

6977.     ^  1872.     (7.0...  8.0) 
R.  A.  14"  37™  35*       Decl.  +  58°  29' 

A  and  C  (11.2) 
1912.162             s8?o7             76716 
.164             58.17             76.26 
.236             58.35             76.20 

1912.29              195-45              55-35 
The  only  other  measures  are  my  own  in  1903. 

6947.     H  2737.     (10.4...  12.  5) 
R.  A.  14"  33™  49'        Decl.  +  20°  31' 

1909.227              26?9                10771 
.302             24.7               10.  61 

1912.19               58.20             76.21 

For  the  proper  motion  of  AB.    No  other  measures. 
Porter  07253    in     142?! 

6982.     ^  1874.     (7.  7...  9.  2) 
R.  A.  14"  38™  i  '        Decl.  +  49°  38' 

1909.186            288?6o              267:8 
.263            288.75              26-39 
.266            288.63              26.29 

1909.26               25.8               10.66 

No  other  measures.    I  have  connected  the  principal  star  of 
this  with  the  two  nebulae  referred  to  by  Herschel.    They  are 
too  diffused  for  very  exact  measurement. 

H  2737  and  h  1856 
1909.302            341  °2              15072 
•304            341-5              152-6 

1909-30              341-3              I5I-4 

H  2737  and  h  1858 
1909.304            I36?4               6377 

1909.24              288.66              26.29 
Probably  unchanged. 

197 


Biirnham:   Measures  of  Proper  Motion  Stars 


6993.     e  Bootis.    21877.     (3.0.  ..6.  3) 
R.  A.  14*  39m  45'       Decl.  +  27°  35' 

A  and  C  (12.3) 

178*37 


1912.353 
.411 


257?  13 
256.70 


179.06 


1912.38  256.91  178.71 

The  proper  motion  of  E  Bootis  is  given  : 

Auwers         0*057    in    271  ?o 
Boss  0.048    in    279.5 

Newcomb     0.048    in    281.2 


6997.    2  1876.    (8.  i...  8.  6) 
R.  A.  14"  40™  2-       Decl.  —  6°  53' 

A  and  C  (11.5) 

1908.266  299^65  65*70 

•  370  300.28  65.83 

.422  300.00  65.36 


1908.33 


299.98 


65.63 


If  the  single  measure  of  Ho  is  correct,  the  components  of  2 
1876  have  a  considerable  proper  motion ;  but  it  does  not  appear 
to  have  been  recognized  in  the  star  catalogues. 


6999.    2  1879.    (7.8.  .  .8.8) 
R.  A.  14"  40™  23*       Decl.  +  10°  10' 

AB  and  C  (12.1) 

1910.340  205?43  56*56 

•  3S6  205.78  56.70 

•375  205.28  56.84 


1910.36 


205.50 


56.70 


AB  and  D  (10.8) 

1910.340  2i7?8o  133*44 

.356  218.25  133-68 

.375  218.10  133.90 


1910.36 


218.05 


I33-67 


For  proper  motion  of  AB.     This  is  given  from  meridian 
positions : 

Porter      0*288    in    165?$ 


7034.     |  Bootis.    Z  1888.    (4.  7...  6.6) 

R.  A.  14'  45"  51"       Decl.  +  19°  36' 

A  and  B 

'63°o 


1907.329 

•  351 

•  444 
.463 

_.**_ 

1907.41 


163-4 
163.6 
161.5 
162.7 

162.8 


2*37 
2.81 

2-34 

2.51 
2.32 

2.47 


A  and  C(i3-3) 

1912.351  3S2?7S  6o'.'7i 

•  353  352.31  60.29 

.411  352-70  60.53 


1912.37 


352-59 


60.51 


For  the  proper  motion  of  the  binary  system;  no  other  meas- 
ures of  the  faint  star.  For  the  proper  motion  of  |  Bootis  we 
have: 

Auwers         0*161     in     128^8 

Boss  0.168    in     129.2 

Newcomb     0.167    'n     122.4 


7040.     031-     (8.  5...  10.2) 
R.  A.  14"  46'"  59'        Decl.  +  19°  13' 

A  and  C  (12.5) 
1910.164  165^6 


.280 
.299 


164.4 
164.0 


9*57 
8.89 
9.06 


1910.25  164.7 

A  and  D  (11.6) 
1910.148  276^75 


.164 
.280 


276.73 
276.42 


9-17 


94:'75 
94.99 
95-02 


1910.20  276.63  94-92 

AD  for  the  proper  motion  of  the  triple  system. 
A.  G.  Ber.     0*230    in    347?9 
Porter  0.223    in    343.0 


7048.     O2(App.)i3i.     (6. 5... 7. 2) 
R.  A.  14"  47"-  40'       Decl.  +  o°  5' 

A  and  B 

1912.351  2i2?io  87*67 

•353  212.03  88.36 

.389  211.83  87.94 

1912.36  211.99  87.99 

From  the  three  positions  by  A  and  P  (1873-1912)  we  have 
for  the  proper  motion  of  one  of  these  stars: 
0*076    in     I57?7  (±  180°) 

To  determine  which,  if  only  one,  of  these  stars  has  this 
movement,  I  have  connected  with  each  a  third  small  star : 

A  and  P  942  (9.2) 
1912.351  2i8?oo  273*24 

•  353 


1912.35 


1912.351 
•  353 
.389 

1912.36 


218.76 
218.83 

B  and  P  942 

221°.  77 
221.98 
221.92 

221.89 


273-54 
273.39 

186*52 
186.33 
186.17 

186.34 


198 


Burnham:   Measures  of  Proper  Motion  Stars 


7060.     Sh  190.     (6. 3... 7. 3) 
R.  A.  14"  50™  27"        Decl.  —  20°  52' 

As  a  double  star,  this  was  first  observed  by  Sir  William 
Herschel  in  1791,  and  subsequently  by  South  and  Herschel,  who 
measured  the  angle  and  distance  in  1823,  and  entered  it  as 
No.  190  of  their  catalogue  of  double  stars.  It  was  soon  found 
that  these  stars,  called  seventh  and  eighth  magnitude  in  Sh, 
had  an  unusually  large  proper  motion  of  about  2"  a  year,  and 
that  there  was  very  little  relative  change,  thus  making  a  system 
of  the  61  Cygni  type,  with  a  movement  in  space  exceeded  only 
by  that  famous  pair. 

In  1878  I  measured  four  very  small  stars  in  the  field  for 
the  purpose  of  getting  later  an  independent  value  of  the 
proper  motion  of  the  large  star.  It  is  practically  certain  that 
no  one  of  these  faint  stars  can  have  any  sensible  movement. 
No  star  of  this  class  anywhere,  not  attached  to  and  moving 
with  a  much  brighter  star,  has  ever  been  found  to  have  any 
proper  motion  whatever. 

The  recent  measures  of  the  several  distant  stars  are  as 
follows: 

A  and  C 


1911.219 

.241 

285?I 
284.4 

26V74 
26.84 

1911.23 

284.7 

26.79 

A  and  D 

1911.184 
.219 

.222 

II?82 
II.  12 
11.67 

ioi"i3 

101.53 
101.44 

I9II.2I 

II-S4 

101.37 

A  and  E 

I9II.I84 
.219 
.222 

I9i?23 
191.68 

192.45 

45"35 
45.38 
45.64 

.241 

192.07 

45-34 

I9II.2I 

191.86 

45-43 

A  and  F 

1911.184 
.219 
.222 

324°55 
324.55 
324-75 

i88':49 
188.87 
188.67 

1911.21 

324-62 

188.68 

The  change  in  the  position-angle  of  C  since  1878  amounts  to 
more  than  113°.  It  is  now  very  near  B,  and  consequently  very 
difficult  to  see  and  measure. 

Comparing  these  positions  with  those  of  1878,  given  in  the 

General  Catalogue,  we  have  for  the  proper  motion  of  A: 

AC        R.  A.  +  il'o37        Decl.  — 1^781 

AD  1.057  1.735 

AE  1.032  1-768 

AF  1.056 1-757 

1.045  T-76o 

Therefore  the  corrected  proper  motion  of  A  is : 

2*047     in     I49°3<> 

Some  of  the  later  determinations  from  meridian  observations 

of  the  proper  motion  of  the  principal  star  are: 

Bonn  2"oi4    in     151^27 

Porter         2.064    m     T5O-47 

Boss  2.039    in     '49-35 


For  the  present  relation  of  the  large  stars : 
A  and  B 


1911.260 

296°  14 

I7'?88 

.280 

296.73 

17-56 

.299 

296.19 

17.53 

.302 

296.15 

17.86 

1911.28 


296.31 


17.71 


From  the  measure  by  Herschel  in  1836,  and  seven  subsequent 
positions  by  HI,  Doo,  and  P  on  26  nights,  we  have  for  the 
apparent  motion  of  B  : 

o"ioi     in    326^67 

Hence  the  real  proper  motion  of  this  star  is : 
i:'948    in     H9°45 


7063.     A.  G.  196.     (9. i... 9. 4) 
R.  A.  14"  50m  52'        Decl.  +  51°  7' 


1910.340 

•  375 


139.0 
139.2 


25"53 
25-53 


1910.36 


I39-I 


25-53 


7066.    Z  1893-    (8.4-..IO.O) 
R.  A.  14"  51™  io'        Decl.  +  29°  58' 


igi  i  .  107 

237°5 

19.50 

.142 

237-5 

19-52 

.162 

237-6 

19.95 

.164 

237.6 

19.67 

1911.14 


237-55 


19.66 


The  motion  is  rectilinear,  and  undoubtedly  wholly  due  to  the 
proper  motion  of  the  large  star.    The  four  positions  by  2,  A, 
HS  and  P  (1832-1911)  give  for  the  proper  motion  of  A: 
o''ogo    in    3i8?3 

No  proper  motion  found  in  the  star  catalogues. 


7071.     H  561.     (8. 3... 8.7) 
R.  A.  14*  51™  44'        Decl.  —  13"  36' 


A  and  B 

1910.164 

.260 
.299 

i6a?33 
162.33 
162.75 

I26':S7 
126.83 
126.58 

1910.24 

162.47 

126.66 

1910.164 

.260 

.299 

A  and  C  (9.  3) 

26l?00 

260.73 
260.95 

156^50 
156.31 
156.36 

1910.24 

260.89 

156.39 

The  SD  number  of  A  in  Part  I  of  the  General  Catalogue 
should  be  4020.  B  and  C  are  Nos.  4022  and  4019-  The  only 
other  measures  are  those  given  in  G.  C.  Part  II. 


199 


Burnham:   Measures  of  Proper  Motion  Stars 


7074.    H  2756.    (8.9...  9.  2) 
R.  A.  14"  sim  54'       Decl.  +  8°  45' 

I907-I37             93°3               27722 
•197             94-3               27.10 
.217             92.3               27.36 

7095.    2  1899.    (7.  2...  9.  7) 
R.  A.  14"  55'"  20*        Decl.  —  2°  41' 

1907-137              67?!                28:'io 
.197              67.0                28.03 
.258              67.6                28.13 

1907.18               93.3               27.23 
Probably  without  change. 

7077.    18  Librae.    21894,    (6.0...  10.2) 
R.  A.  14"  52m  24*       Decl.  —  10°  40' 

A  and  B 
1907.258             39?6               19710 
-348             39-9               I9-48 
.425             39.4               19.60 
.444             38.9               I9-36 

1907.20                67.2                28.09 

No  change.    The  principal  star  is  given  : 
Bossert     o7io    in    180" 

7097.    H  2760.     (9.3...IO.O) 
R.  A.  14"  ssm  48'        Decl.  +  6°  6' 

1907-137             21?  i               19741 
.197            21.0              19.34 

I907-37                39-45              19-38 

A  and  C  (10.0) 
1907.258             40?8o            i6i76o 
.348             40.80            161.70 
.425             40.93            161.47 

1907.17                      21.0                      19.37 

No  early  measures. 

7098.    2  1901.    (7.  7...  9.5) 
R.  A.  14"  ssm  59-       Decl.  +  31°  51' 

1907.197            io8?o               25^26 
-214            197-5               25.47 
.217            197.5               24.86 

1907.34               40.84            161.59 

The  measures  of  C,  with  two  positions  by  Engelhardt  in 
1887  and  1894,  give  for  the  proper  motion  of  18  Librae: 
o'nj    in    26s?2 

From  the  star  catalogues: 
Auwers        0^143    in    239?8 
Boss             0.131    in    234.4 

A  and  B  are  moving  together. 

7079.    P  1085.    (6.0...  13.  2) 
R.  A.  14*  52"  37'       Decl.  —  4°  30' 

1907.258              23?4                 9728 
9.227              23.4                 9.38 

1907.21              197.7               25.20 

Change  from  proper  motion  of  A.     The  measures  (1831- 
1907)  give: 

Measures            o7o79    >n    231  ?8 
A.  G.  Harv.        0.065    in    360. 

A  and  DM  (31°)  2685 
1907.  197                    A  Decl.  110^09 
.214                                109.80 

The  A.  G.  positions  give   11273(1871.3),  and  confirm  the 
motion  in  declination. 

7108.     Ho  391-    (8.o...ii.o) 
R.  A.  14"  57™  47'        Decl.  —  6°  24' 

A  and  C  (12.0) 
1910.375            2o8?73             4i''36 
.395            299.83             41-24 

1908.24                23.4                 9.33 

Common  proper  motion. 
Porter      07413    in    254?7 

7088.    2  1896. 
R.  A.  14'  54"  2-       Decl.  +  44°  32' 
A  and  DM  (44°)  2407  (8.3.  .  .9.3) 

1910.093           335?95             59759 
•  107           336-08             59.62 
.128           336.20             60.  ir 

1910.38             299.28             41.30 

For  the  proper  motion  of  AB.    The  prior  measures  are 
in  Part  II  of  the  General  Catalogue. 

Bossert         o7227    in    246?7 
Porter           0.268    in    259.3 
Paris              0.224     in     247.7 

given 

1910.11             336.08             59.77 

The  change  shown  by  the  single  measure  of  1895  may  not  be 
real. 

200 


Burnham:   Measures  of  Proper  Motion  Stars 


7120.    44  Bootis.    2  1909. 

(5-2.  -.6.1) 

7154.    Weisse28. 

R.  A.  14"  59™ 

51'        Decl 

+  48°  7' 

R.A.  I5h6m3"       Decl.  —  14-15' 

1908.271 

243?8 

4721 

This  star  is  not  double,    h  3593  is  about  30'  distant  «/;  little 

-370 

244.8 

4.19 

brighter  in  the  center. 

.383 
-403 

243-4 
241.7 

4.20 
4-23 

h  3593  and  star  12.7  m 

1908.36 

243-4 

4.21 

1910.395              5^-6              144-21 
.414              52-8              144-49 

We  have  for  the  proper  motion  of  the  system  : 

1910.40                52.2              144.35 

Auwers 

07433    in 

273°o 

Porter 

0.401     in 

276.0 

Newcomb 

0.377    in 

275.9 

7181.    O2  292  rej.     (6.  5...  8.0) 

Boss 

0.388    in 

274.6 

R.  A.  15"  9™  1  1'       Decl.  +  32°  14' 

1909.400            I55?82            125722 

•438            155-57            125.12 

7125.     H 

1268.     (8.7. 

.  .12.2) 

1909.42             155-70            125.17 

R.  A.  15"  om 

42'       Decl. 

+  6°  15' 

Probably  a  little  proper  motion  in  one  ;  no  early  measures. 

1825            153?!            13073                          Weisse 

1910.164 

92?3 

28731 

1875           155-0           126.9                        A.  G.  Leid. 

.206 

92.5 

28.47 

1899.59      155.2            125.91          2n           Hu 

.244 

92.6 

28.42 

1910.20 

92.5 

28.40 

No  other  measures.    H 

2762,  which 

should  be  22'  n  of  this, 

7186.    02294.     (6.8...  n.  3) 

not  found. 

R.  A.  15"  9°  47'       Decl.  +  56°  30' 

A  and  B 

1910.164            249^5                  3728 

7136.    3 

349-     (7-5-  - 

.11.8) 

.184            248.4                 3.23 
.186            245.8                 2.91 

R.A.  15"  2" 

52'        Decl 

.  +  2°  9' 

.225            248.8                 3.24 

1909.438 

37?8 

3»83 

1910.19              248.1                  3.16 

09.458 

36-6 

3-31 

No  change  in  the  small  star. 

10.164 

36.1 

3-41 

A  and  Groombridge  2203 

1909.69 

36.8 

3-52 

1875            AR.  A.  —  62!  2       A  Decl.  —  7075       A.  G.  Hels. 

iQr\f\                                                  f\~\    f\                                         *ro    r             {"Zt*Ao*tiirif«li 

The  nebula  55'  nearly  north  is  brighter  in  the  center,  but 
bisection  not  very  exact. 

h  1903  and  star  10.8  m 
1909.458  io8?55  U4''9S 

10.164  109.00  114.15 


1009.81 


108.77 


"4-55 


For  comparison  we  have : 

1893.42  I09?8  1 1274 


Eng. 


There  are  two  small  nebulae  about  2l/2m  and  3^™  />  (J  349, 
and  nearly  the  same  declination. 

h  1901  and  star  12  m 
1910.244  277?o  140773 

Dreyer  5839  and  star  12.5  m 
1910.244  91 °8  92750 

For  the  first  we  have : 

1886.96  276?7  14075  in  Eng. 


1910.18 

A  is  Groombridge  2209.    The  proper  motions  are  practically 
zero: 

Groom.  2209    o7oo9    in    32O?6 
Groom.  2203    o.oio    in      39.4 

The  large  diffused  nebula,  h  1909  is  about  50'  distant  sp; 
bisection  rather  uncertain: 

h  1909  and  star  n.o  m 
1910.164  33i?5  88773 

-184  333-9  88.83 


1910.17 


332.7 


88.78 


h  1909  and  star  10.7  m 

1910.164  227?6  88^83 

.184  231.9  88.83 

1910.17  229.7  88.83 

The  prior  observations  are: 

1877.59           336?2  0275  m 

1877.59           231.2  86.7  in 


Wn 
Wn. 


Burnhain:   Measures  of  Proper  Motion  Stars 


7187. 

O2  293.     (7.5 

.  .11.  0) 

7202.    02 

(App.)  137.     (6.7 



...8.5) 

R.  A.  15" 

iom  10*       Decl. 

+  22°  59' 

R.  A.  15"  I2m  1  1  '       Dccl.  +  5  1  °  23' 

1909.400 

346?3 

10784 

1911.241 

105^69 

73"65 

.438 

348.3 

10.80 

.258 

105.50 

73-17 

1909.42 

347-3 

10.82 

.260 

105.50 

73.48 

^Jn    tfiirsl    ef  *i  *•    TH-I  t-    rt 

1911.25 

105.56 

73-43 

A.  G.  Ber.      o"ii2    in    28o?5 


7193.    2  1925.    (7. 8... 9. 3) 
R.  A.  1 5"  iom  28'       Decl.  —  7°  50' 

A  and  B 
1911.302  I2?6  5715 


•  334 
•337 


I2?6 

14.1 
13-2 


4-99 
5-26 


1911.32 


13-3 


5-13 


A  and  B  have  a  common  proper  motion. 

Bossert         0*234    in  2o6?3 

Valentiner    0.254    in  206.4 

Porter           0.254    in  206.3 

A  and  C  (13. 2) 

1911.302     27i?32  65^52 

•395     270.77  66.50 

.411     269.48  66.34 


1911.37      270.52 

A  and  D  (12.8) 


66.12 


1911-392 

276?77 

I25'.'62 

•395 

276.23 

124.75 

.411 

276.50 

125.29 

1911.40 

276.50 

125.22 

A  and  E  (12.0) 

I9II.392 

271  ?32 

2  17'f  10 

•395 

271.40 

217.32 

.411 

271.30 

217.12 

1911.40    271-34    217.18 

No  other  measures  of  the  small  stars. 


7201.     0227.     (7-2...  9-5) 
R.  A.  15'  I2m  7'       Decl.  —  23°  50' 

About  15'  distant  «/>  p  227  is  h  3598;  small  with  central  con- 
densation. 

h  3598  and  Cord.  DM  (23°)  12193  (10.0) 
1911.414  3o8?3  93? i 7 

h  3597  and  star  10.8 
1911.414  262?8  iioTiS 

The  latter  is  similar  to  the  other,  and  about  31'  p. 
The  proper  motion  of  (5  227  is  given : 

Battermann      0^091     in    244?! 


The  change  seems  to  be  wholly  due  to  the  proper  motion  of 
the  large  star.  There  is  no  third  star  convenient  to  measure. 
From  the  four  positions  the  apparent  proper  motion  of  A  is : 

07088    in    I45?s 

From  the  catalogues  this  is : 

A.  G.  Harv.        07079    in    165? 7 
Battermann          0.055    in     158.9 


7210.    2  1931-    (6.2... 7. 6) 
R.  A.  15"  I2"1  57'       Decl.  +  10°  52' 

A  and  B 

1908.249  i;o?7  13733 

.252  170.1  13.11 

.266  169.4  13-29 


1908.26 


170.1 


13-24 


No  relative  motion  in  AB.    I  do  not  find  it  in  any  proper 
motion  list.    In  this  interest  I  have  connected  a  third  star. 

A  and  C  (11.4) 

1908.249  93?os  162718 

.266  92.65  162.06 


1908.26 


92.85 


162.12 


7212.    2  1934-    (8.5-.- 8.5) 

R.  A.  15"  I3m  10'        Decl.  +  44°  14' 

A  and  B 


1911.219 
.241 


27  ?o 
26.6 


7-05 
7.14 


1911-23 


26.8 


7.09 


From  six  positions  by  2,  Ma,  A,  HI,  Doo  and  3  on  31  n  (1830- 
1911)  one  of  these  stars  has  a  proper  motion  of: 

o"o34    in     i68?3  (±  180°) 

As  these  stars  are  of  about  the  same  brightness,  the  motion 
may  be  in  either.  To  determine  which  is  moving,  I  have  con- 
nected a  third  small  star. 

A  and  C  (10.7-) 

1911.219     2i7?75  140769 

.221     217.87  140.55 

.241     217.70  140.70 


1911-23 


217.77 


140.65 


202 


Burnham:   Measures  of  Proper  Motion  Stars 


7213.     S  Serpentis.    2   1930.     (S.O...IO.Q) 
R.  A.  15"  13"'  io'        Decl.  +  2°  14' 

A  and  B 
1907.463  37°9  io"93 

A  and  C  (12.0) 
1907.351  4S?40  125^43 


•444 
•  463 

45  -55 
45.87 

125.28 
125.14 

1907.42 

45.61 

125.28 

1911.241 
.260 
.299 

44°SS 
44-37 
44-80 

125*38 
124.92 
124.98 

1911.27  44.57         125.09 

From  the  three  positions  of  this  star  (1887-1911,)  we  have  for 
the  proper  motion  of  5  Serpentis: 

0*590    in     140^7 

A  and  D 
1911.25        AR.  A. —  44^98        A  Decl.  —  24*93 

The  prior  observations  of  D  will  be  found  in  the  General 
Catalogue. 
From  meridian  positions  the  proper  motion  of  5  Serpentis  is : 

Auwers  0*638  in  146^0 
Bossert  0.649  m  146.3 
Boss  0.645  in  147.1 


7224.     H  2776.     ( io. i...  12. 5) 
R.A.  I5"i5mi6<        Decl. +  46°  16' 


1909.227 
.266 
.302 


310.7 
3H.3 


I9"64 
19.88 
19.24 


1909.26 


3II-5 


19-59 

No  other  measures.  The  object  in  the  field,  referred  to  by 
Herschel,  is  h  1920;  very  diffused  and  bisection  rather  un- 
certain. 

H  2776  and  h  1920 
1909.302  I3?o  170*89 

.304  12.4  170.31 


1909.30 


12.7 


170.60 


7237.    23093.    (8.0... 9. 2) 
R.  A.  is"  16™  27"       Dec!.  — i°  6' 

1910.164  I42?s  28:'4S 

.356  142.6  28.08 

.395  141.9  28.56 

1910.31  142.3  28.36 

The  four  positions  by  2,  A,  Doo  and  f5  (1829-1910)  give  for 
the  proper  motion  of  A : 

0*076    in     ios?o 


7244.     H  2779.     (7.0...II.O) 
R.  A.  15"  17™  28"       Decl.  +  55°  45' 


1911.260 

•  337 

•  353 


349°6 
348.9 
349-5 


11.03 
11.07 
11.09 


1911.32  349.3  ii. 06 

Probably  fixed.    No  proper  motion  found  for  the  large  star. 

7251.    TI  Coronae.    2  1937. 

R.  A.  15"  i8m  15'       Decl.  +  30°  43' 

AB  and  C 


1907.331 

I4°40 

54-72 

7.348 

14.00 

54.76 

8.039 

13-58 

55.38 

8.156 

14.00 

54-94 

1907.72  14.00  54-95 

The  measure  I  have  given  by  Lament  in  1836  is  wholly 
wrong,  and  probably  belongs  to  some  other  star.  The  relation 
at  this  time  must  have  been  about  29°  :  45". 

The  measures  of  1856  and  1907  give  for  the  proper  motion 
of  TI  Coronae: 

0*233    in     I42?5 

AB  and  D  (ii.o) 

1909.340  47?32  214*25 

.342  47.35  214.24 

.378  47-68  214.19 

1909-35  47-45  214.23 

For  comparison  we  have : 

1879.97  48?g6  212*82  3n  Bl. 

Further  measures  should  be  made  after  a  suitable  interval  to 
give  the  best  correction  to  the  proper  motion  of  AB.  From  the 
two  positions  that  motion  is: 

0*197    in     152^3 

Some  of  the  results  from  the  star  catalogues  are: 
Auwers         0*219    m    150^7 
Porter  0.217    in    148.5 

Boss  0.237    in     146.6 

Newcomb      0.235    in     147.8 


7258.     M.  Bootis.    2  28,  App.  I. 
R.  A.  15"  I9m  58'        Decl.  +  37°  48' 

A  and  BC 
1910.109  !7i°35  107*96 


.128 

171.33 

107.86 

.145 

171.50 

108.17 

.148 

171.33 

107.92 

.164 

171.20 

107.97 

1910.14     171.34    107.98 

Very  little  change  if  any  since  1834.  The  proper  motion  of 
the  large  star  is : 

Auwers         0*189    in  2cX>?4 

Bossert          0.158    in  296.2 

Boss  0.169    in  297.5 


203 


Burnham:   Measures  of  Proper  Motion  Stars 


7268.    Sh2oz.    (7. 2... 7.5) 

R.  A.  15"  21"  40'       Decl.  — 8°  55' 

B  and  SD  (8°)  3984  (10. 5) 

1910.356 

•  395 

•  397 


109:73 
109.58 
109.46 


166.17 
166.47 


1910.38 


109-59 


166.44 


For  proper  motion  of  AB. 

The  proper  motions  by  Porter  are: 

A         o?339    in     I72?o 

B         0.355    in     158.4 

As  these  stars  have  remained  relatively  fixed  for  half  a 
century,  the  motions  must  be  exactly  the  same. 


7276.    02296.    (7.0... 8.6) 
R.  A.  15"  22™  18'        Decl.  +  44°  26' 

A  and  C  (12.1) 

1911.260     3is?73  67^23 

•337     315.97  67.33 

•  356     3IS-73  67.41 


1911.32 


67.32 


No  other  measures  of  C.    The  principal  star,  Lalande  28230, 
is  given  some  proper  motion : 

Bossert         0*178    in    io6?3 
Boss  0.105    in    125.4 

DM  (44°)  2466  and  2468 
ipii-337  47°70  157*07 

•353  47-92  156.93 


1911-34 


47.81 


157-00 


These  9.3  m  stars  are  about  10'  s  of  O2  296.    The  meridian 
positions  give: 

1875  46?5  156*1  A.  G.  Bonn 


7277.    2  1945.    (8.8... 9. 5) 
R.  A.  15"  22™  26'        Decl.  +  15°  7' 

A  and  B 
1908.249  292?8  32*47 


.288 
.331 


292.6 
202.7 


33-00 
32-42 


1908.29  292.7  32.63 

From  the  measures  of  2,  A  and  (J  (1830-1908)  the  proper 
motion  of  the  larger  star  is: 

0*140    in     i82?3 

To  make  it  certain  hereafter  that  B  has  no  motion,  I  have 
connected  two  small  stars. 


A  and  E  (10.7) 


1908.249 
.288 


54.15 


146722 
146.26 


1908.27 


54-iS 


146.24 


7289.    Ho  393.    (9. 2... 13.0) 
R.  A.  15"  24™  21'       Decl.  — 18°  27' 

A  and  B 
1908.479  287?!  6?s6 


10.395 


280.2 


7.01 


B  and  C  (9.5) 

1908.249  281 ?4 

.288  281.4 

.331  282.9 


8784 
9-04 
9  06 


1908.29 


281.9 


8.98 


1904.44  283.6  6.78 

Perhaps  change  in  AB,  but  the  distances  are  very  discordant. 

A  and  SD  (18°)  4083  (7.9) 
1908.479  3i3?98  168^84 

08.842  313.90  168.42 

10-395  312.88  168.53 

1909.12  313.59  168.60 

The  SD  approximate  places  give  305° :  155". 


7302.    P  945-    (6. 8...  12. 7) 
R.A.  I5h26m6'       Decl.  +  57°  51' 


1908.425 

•444 
.460 


44°5 
44-3 
45-9 


I5"8o 
15-66 
15.81 


1908.44 


44-9 


15.76 


The  seven  positions  by  3,  A  and  Doo  (1879-1908)  give  for  the 
corrected  proper  motion  of  the  principal  star : 

0*302    in    3Oi?4 

This  is  given  from  the  star  catalogues : 

Stumpe  0*304  in  297?4 
Krueger  0.295  in  298.5 
Porter  0.308  in  299.1 


7314.    '/Librae.    (4. 5... 11.7) 
R.  A.  15"  28™  48'       Decl.  —  14°  23' 


1912.487 
-504 
.507 


152.84 
152.80 
153.40 


41.90 
41.72 
41.08 


1912.49 


153.01 


41.87 


The  measures  of  the  small  star  indicate  a  smaller  proper 
motion  of  y  Librae  than  that  of  the  star  catalogues,  but  the 
first  position  depends  on  a  single  night,  and  therefore  the 
result  is  uncertain,  and  the  measures  should  be  continued. 
From  meridian  observations  we  have: 

Auwers  0*057    in    7O?6 

Newcomb       0.069    in    84.7 
Boss  0.065    in    90.9 


204 


Burnham:   Measures  of  Proper  Motion  Stars 


7315.     H  2886.    (8.1...  ii.  s) 
R.  A.  15"  28'"  52'       Decl.  +  38°  52' 

1911.356            i66?8               23*37 
•375            168.0               23.30 
.392            23.37 

The  apparent  motion  from  the  measures  of  AB  (1830-1910) 
is: 
0*091     in    152^0 

7327.    H  2788.     (8.  5...  8.5) 

1911.37             167.4               23.35 
No  other  measures. 

R.  A.  15"  30m  39s       Decl.  +  45°  18' 

1912.236            304°93              56*83 
•274            304-37              56.92 
.296            304-38              56-95 

7318.     8  Serpentis.    21954.     (3.0...  4.0) 
R.  A.  15"  29""  5"        Decl.  +  10°  56' 

A  and  C  (13.  5) 
1911.392              ii?30             65*61 
.395              11.80             65.87 
.411              11.50             65.89 

1912.27              304.56              56.90 

From  a  comparison  of  this  with  the  only  other  measures 
(1903),  it  is  evident  that  one  of  these  stars  has  a  small  propel 
motion  of  about  0*10.     This  is  confirmed  by  the  meridiar 
positions  : 
1875           304?8           6o78           A.  G.  Bonn 

1911.40               11.53             65.79 

C  and  D  (14.0) 
1911.392            338?5                  4"35 
•395            339-6                4.08 
.4"            338.4                4-6i 

7332.    02298.    (7.0...  7.  3) 
R.  A.  15*  31™  46"        Decl.  +  40°  ia' 
AB  and  C  (7.0) 

1911.40             338.8                4-35 
For  the  proper  motion  of  AB.    No  other  measures. 

1910.148           327?78            121*71 
.164           327-83            121.67 
.167           328.00            122.  02 

Auwers         o"o87    in    286?o 
Boss              0.068    in    276.7 

7320.    02297.    (7.5...H-5) 
R.  A.  15"  29™  40"        Decl.  +  25°  24' 

1911.142             I35?4                 3*26 
.200            134.5                  3-26 
.260            133.0                 3.21 

1910.16             327.87            121.80 

C  has  the  same  large  proper  motion  as  AB. 
Porter      0*514    in    278?3 

h  1930  is  in  the  field;  small,  round,  and  not  well  defined  foi 
measurement. 
AB  and  h  1930 
1910.  128           234?8             195*5 
.203           234-4              193-6 
.244           233.8             195.5 

1911.20              134.3                  3.24 

The  minimum  distance  of  these  stars  will  be  about  i". 
From  8  positions  by  2,  O2,  A,  A,  Hu,  Doo  and  (5  on  24  n 
(1845-1911)  the  proper  motion  of  A  is  : 
o"i57    in    isi?6 

7326.    ^  1961.    (8.  7...  9.0) 
R.  A.  15"  30™  29'       Decl.  +  43°  56' 

A  and  B 

1910.128              38?  17              23752 
.148              38.00              23.49 
.164              38.20              23.44 

1910.19             234.3              194.9 

For  the  last  we  have  : 
1886.31            236=2           205*5            m           Big 
1889.49           236.2           201.2            in           Big 
1890.64           236.0           203.1            in           Big. 

7341.     ^  1963-     (7-3--.  7-7) 
R.  A.  15*  33°  i'       Decl.  +  30°  30' 

A  and  B 
1908.252            204?2                 4*70 
.266           294.3                4.80 
.288           294.1                 4.67 

1910.15                38.12              23.48 

A  and  C  (12.9) 
1910.128           328?go             55*02 
.148            328.20              55-04 
.164            327-83              54-82 

1908.27             294.2                4.72 
No  change. 
A  and  C  (12.5) 
1908.266            ii6?28             31*12 
.288            iiS-75             30.89 

1910.15              328.31              54-96 

.370            II5-70             31-01 

The  very  faint  star  is  measured  for  the  verification  of  the 

1908.31              "5-91             3i-oi 
No  other  measures  of  the  small  star. 

205 


Burnham:   Measures  of  Proper  Motion  Stars 


7359.    P  35-    (7-  1---  8-  2) 
R.  A.  15"  36™  i'       Decl.—  15°  38* 
A  and  SD  (15°)  4167  (10.0) 

1910.455             35°78            112:17 
•471              35-63            112.27 
-473             35-40            112.56 

7362.     rf  Ursae  Min.    21972.     (6.1.  ..7.0) 
R.  A.  15"  36°  13'       Decl.  +  80°  51' 

B  and  C  (n.o) 
1911.356            103^67            I3i"49 
•373             103.80            131.22 
•375             103.37            131-35 

1911.37              103.61             131.35 

For  the  common  proper  motion  of  AB.    C  should  be  in 
Astrographic  Catalogue. 
For  the  proper  motion  of  the  principal  star  we  have: 
Stumpe                0:225    in    296?; 
Bossert                 0.206    in    309.1 
Boss                     0.245    in    298.2 
Groombridge       0.235    in    303.6 

7364.    2  1971  rej.    (S.g.-.n.S) 
R.  A.  15"  37™  13'        Decl.  +  75°  43' 

1907.348            324?4                17:38 
8.041             323.8                17.26 
8.  112            323.9                17.16 

1910.47               35-6o            112.33 

For  proper  motion  of  AB. 
Porter      0:185    in    25o?s 

7360.     i  Serpentis.    Hu  580. 
R.  A.  15*  36™  12'       Decl.  +  20°  3' 

AB  and  C(i3-4) 
1912.353           351  °03            I4i?29 
.411            351-10            141.36 
•430           350.80            142.50 

1912.40             350.98            141.72 

AB  and  D  (12.6) 
1912.389            m°O5            148:89 
.411            in.oo            149.86 
.430            111.13            148.90 

1907-83              324.0                17-27 
This  pair  has  not  been  previously  measured. 

7371.    23095. 
R.  A.  15"  38™  15'       Decl.  —  14°  48' 

These  measures  are  of  the  pair  in  the  field  with  2  3095.    ( 
General  Catalogue.) 

A  and  B  (10.0..  .10.6) 
191  i  .  302           2O4!o9             20^24 
•  334           203.94             20.08 
•  337           203.48             20.56 

1912.41              in.  06            149.22 

The  proper  motion  of  the  close  pair  is  given  : 
Auwers        0:096    in    253?o 
Boss             0.090    in    232.6 

7361.    O2(App.)i4i.     (7.0...  9.0) 
R.  A.  15'  36™  12"       Decl.  +  57°  51' 

A  and  B 
1911.356           205°23             90:52 
•  373            204.93             90.79 
•375            205.00             90.53 

1911.32             203.84             20.29 

A  and  2  3095  (A) 
191  1  .  30        A  R.  A.  —  43*3        A  Decl.  +  7''3 

7372.     a  Serpentis.    H  1277.     (2.  7...  12.0) 
R.  A.  15"  38™  21'       Decl.  +  6°  48' 

1911.162            349?8s             58^59 
.164           349.76             58.15 
.184           349-28             58.33 
.200           349-02             58.58 

1911.37             205.05             90.61 

The  measures  by  A,  Fr  and  P  on  12  n  (1876-1911)  give  for  the 
proper  motion  of  the  large  star  : 

0:044    in    242^8 

From  meridian  positions: 
Groombridge       0:013    in    I93?8 

A  and  C  (7.0) 
I9».375            334?8o           234:36 
•392            335-12            234.96 
•395           335-27           234.39 

1911.18             34970             58.41 

The  four  positions  by  Doo  and  P  (1878-1911)  tend  to  s 
that  the  proper  motion  from  meridian  observations  is  too  la 
Measures        0:112    in    82?7 
Auwers           0.130    in    64.5 
Newcomb       0.139    in    72.4 
Boss                o.  139    in    74.2 

I9H-39             335.06           234.57 

C  is  Groombridge  2265.    This  is  given  a  small  proper  motion  : 
Groombridge     0:014    in     I5?8 

206 


Burnham:   Measures  of  Proper  Motion  Stars 


7384.    H  1278.    (8. 5...  10. 7) 
R.  A.  is"40m29'        Dec!.  — 15°  48' 


1909.3/8 
.381 


128.5 


26:'6S 
26.92 


1909.38  128.4 

Only  a  single  measure  prior  to  this. 


26.80 


7386.     QSerpentis.    21970.     (3.0... 9. 2) 
R.  A.  15"  40™  39*        Decl.  +  15°  48' 

A  and  C  (10.0) 
1912.353  208?  66  I99':8o 


.389 

.411 


2o8?66 
208.88 
208.63 


I99-SS 
200.23 


1912.38 


208.72 


199.86 


The  large  stars  have  a  common  proper  motion, 
measures. 

Auwers  (Brad.)  o"o6o  in  I25?5 
Auwers  (F.  C.)  0.059  in  134.4 
Boss  0.091  in  128.9 


7394.    2  1976.    (8.  2...  8.2) 
R.  A.  15"  42"-  33'        Decl.  +  59°  48' 

A  and  B 

1909.266  7i?5  19^36 

.299  71.5  19.19 

.302  71.7  19.08 

1909.29  71.6  19.21 

No  change  since  1831.    There  is  a  13  m  star  nearer 


No  other 


To  detect  proper  motion,  if  any,  in 
a  distant  10  m  star  : 

A  and  C 

1909.266  214^05 

.299  213.88 

.302  213.75 


1976,  I  have  measured 


I33"6o 
133.71 
133-33 


1909.29  213.89  I33-55 

The  large  nebula,  h  1934,  is  about  6m  directly  p. 

7404.     p  415-     (8.5... II. 5) 

R.  A.  15"  44™  50'        Decl.  +  65°  57' 

A  and  B 


1907.217 
.258 
•  351 


335°3 
335-2 
335-7 


12.80 
12.64 


1907.28  335.4 

Relatively  fixed  since  1876. 


12.70 


A  and  C  (12.0) 

1907.217     358?9  27^60 

.258     359-1  27.94 

•351     358.7  28.03 


1907.28 

1910.280 
.299 


358.9 

359°o8 
359-05 


27.86 


27.70 


1910.29  359-06  27.65 

Change  in  AC  from  proper  motion  of  A. 

C  and  D  (13.0) 

1907.258  7°  i  55''54 

.351  6.0  54.85 


1907.30  6.5 

There  is  a  14  m  star  nearer  C. 


55-20 


7411.     H  574-     (9-O...II.8) 
R.A.  15"  45™  35s        Decl.  +  32"  46' 

A  and  B 
1908.249  93?o  I5?95 


.266 
•425 


92.4 
93-4 


15-97 
15-97 


1908.31  92.9  15.96 

A  and  C  (10.0) 

1908.240,  09?35  77?52 

.266  99.05  77.44 

.425  99.78  76.84 


1908.31 

No  other  measures. 


99-39 


77.27 


7422.     2  1983.     (8. 7... 10.8) 
R.  A.  15"  47™  27'        Decl.  +  35°  49' 


1908.291 
•  370 
.383 


71.9 
71.9 


IS  75 
15-75 
16.18 


1908.35 


71.6 


15.89 


The  four  positions  by  'S,  A  and  P  (1830-1908)  give  the  proper 
motion  of  A : 

o"o27    in    117? i 


7428.    Z  1984.    (6.2... 8.5) 
R.  A.  15"  48m  i'       Decl.  +  53°  16' 

A  and  C  (12.5) 

1910.280  97°92  170^75 

.299  98.12  171.00 

.318  97.70  170.69 


1910.30 


97.91 


170.81 


For  proper  motion,  if  any,  in  AB.    No  other  measures. 
A.  G.  Harv.         o"ooo    in    27o?o 
Groombridge       0.027    in    248.3 


207 


Burnham:   Measures  of  Proper  Motion  Stars 


7437.    H  1281.    (6. 8... it. 5) 
R.A.is'somi7'       Decl.  — 15°  41' 

34*09 
34-99 
35-01 
34-93 


1911.302 
•337 
•392 
-395 


231-7 
230.4 

232-4 


1911.36 
Change  uncertain. 


231.5 


34-75 


7442.    \CoronaeBor.     HVI-94.     (5. 7... 9. 5) 
R.  A.  15- 51"  25'       Decl.+38°i8' 


1911.107 
.142 
.162 

.164 


64?  13 
64.87 
64-63 
64.75 


96754 
96.18 
96.95 
96.67 


1911.14  64-59  96.58 

The  three  positions  (1879-1911)  give  for  the  proper  motion 
of  the  large  star: 

Further  measures  are  needed  for  a  final  value. 
Auwers          07091    in    23?4 
Boss  0.084    in    31.2 


7443.    H  2798.    (10.6... u. i) 
R.  A.  15'  51-  35'       Decl.  +  17°  48' 


A  and  B 

1907.217 

30?  i 

8^07 

•233 

.258 

30.1 
30.4 

7-94 
7-44 

1907.24 

30.2 

7.82 

A  and  C  (9.0) 

1907.217 

i7i?9 

4876s 

.233 

.258 

172.1 
172.4 

49.29 
49.14 

1907.24 


172.1 


49.02 


There  is  probably  an  error  of  10"  in  Dembowski's  distance 
of  58749,  or  perhaps  one-half  a  revolution  giving  47795  for 
the  distance.  C  is  DM  (17°)  2936. 


7451.    H  258.     (9.s...io.o) 
R.  A.  15' 52"  26'       Decl. +  36°  33' 


1909.304 

•  340 

•  342 


254-8 
254-5 


16754 
16.75 
16.72- 


1909-33  254.8  16.67 

The  only  other  measure  is  by  Dembowski  on  a  single  night 
in  1873. 


7453.    e  Coronae.    A.  G.  Clark  7.     (4. 2... 12.0) 
R.  A.  15"  S2m  37'       Decl.  +  27°  14' 

A  and  C  (11.5) 
1912.353  i75°83  105752 


.389 
.411 


175.55 
175.17 


104.25 
105-74 


1912.38  175-52  105.17 

The  proper  motion  of  e  Coronae  from  the  star  catalogues  is: 
Auwers  (F.  C.)        o7ii7    in    237?9 


Boss 
Newcomb 


0.109    in    231.5 
o.no    in    232.6 


7460.     2  1996.     (8. 7... 9.0) 
R.  A.  15'  53"  26'        Decl.  +  57°  38' 

A  and  B 
1910.340  io8?35  19736 


•  356 
•375 


108.60 
108.40 


19.49 
19-50 


1910.36  108.45  19-45 

No  recent  measures.  Probably  fixed.  Wrongly  identified  in 
Part  I  of  the  General  Catalogue;  not  in  DM,  but  closely  /  the 
O.  Arg.  star. 

A  and  DM  (57°)  1621  (9.0) 
1910.356  141^15  150729 

•  375  I4LP3  149-94 


1910.37 


141.09 


150.11 


7466.    2  1993.    (8.2... 8.2) 
R.  A.  15"  54"  22'       Decl.  +  17°  43' 

One  of  the  components  of  2  1993  has  a  proper  motion  of 

0776  in  about  38°  (±  180°)  .     I  have  therefore  connected  a 
distant  star. 

A  and  2  1994  rej. 

1910.299            I79°I2  242:'28 

.318            179.00  242.57 

•337             178.70  242.42 


1910.32 


178.94 


242.42 


7473.    Ho  400.    (8.0...  13.0) 
R.  A.  15"  54-°  54'        Decl.  +  16°  i' 


1911.200 
.219 


133-0 


io78o 
10.97 


132.3 


10.88 


1911.21 
Change  uncertain. 
h  1942  and  h  1943  are  distant  about  45'  tip  Ho  400. 

h  1942  and  star  n  m 
1911.219  i6o?7  I79''o 

h  1943  and  same  star 
1911.219  27?9  14277 


208 


Burnham:   Measures  of  Proper  Motion  Stars 


7477.    02303.    (7.  4--.  7-  9) 
R.  A.  15"  S5m  i8s        Decl.  +  13°  37' 

AB  and  C  (13.0) 
1912.241              n?67              77719 
.430              11.27              77.02 

7508.    A.  G.  202.    (9.  i.  ..9.  2) 
R.A.  i6"2™i"        Decl.  +47°  59' 

1910.280           283?s               22^21 
.299           284.0               22.14 
.356            283.7                21-94 

•46s              11-55              76.75 

I9IO.3I                    283.7                      22.10 

1912.43                11.50              76.99 

No  proper  motion  of  the  binary  found  in  the  catalogues  re- 
ferred to.    No  other  measures  of  C. 

7480.    p  Coronae  Bar.    S  676.     (5.  5...  9.  6) 
R.  A.  15"  56™  28"        Decl.  +  33°  40' 
1912.236             75?s8             84786 

7514.    x  Herculis.    2  2010.     (5.0.  ..6.0) 
R.  A.  16"  2m  40'       Decl.  +  17°  22' 

A  and  C  (13.3) 
1912.353            2I3?43              62725 
.389            211.72              63.21 
.411            211.67              62.74 

•274              75-93              84.71 
.296              75.38              84.48 

1912.38              212.27              62.73 

1912.27                75.63              84.68 

In  the  General  Catalogue  I  have  given  the  proper  motion  of 
p  Coronae  from  the  measures  1853  to  1903.    This  will  not  be 
sensibly  changed  by  these  measures. 
The  several  results  are  : 
Measures      07795     in     I94?8 
Auwers         0.815    in     196.0 
Porter           0.810    in     196.1 
Boss              0.810    in     195.3 

7490.    22006.    (7.  5...  9.  2) 
R.  A.  15"  58™  i'        Decl.  +  59°  16' 
A  and  C  (7-7) 

The  small  relative  change  in  AB  is  probably  due  to  a  small 
difference  in  their  proper  motions,  thus  making  a  system  of  the 
61  Cygni  type.    The  movement  of  the  principal  star  is  given  in 
the  star  catalogues  : 
Auwers         o7o88    in    262?8 
Boss              0.047    in    252.5 

7535.    O2(App.)i43.    (6.  3...  8.  2) 
R.  A.  16"  sm  15'       Decl.  +  70°  35' 

1907.291              84?7                46"54 
•329              84.5                46.85 
•351              83.9               46.63 

1911.142            2i7?6s              44799 
.162            218.10              45.23 
.184            217.88              44.85 

1907.32                84.4               46.67 
No  relative  change.    The  proper  motion  of  the  larger  star  is  : 

1911.16              217.88              45.02 

Change  in  both  companions. 
No  suitable  fourth  star  for  comparison. 

7500.    22007.     (6.  5...  8.0) 
R.  A.  16"  o™  27'        Decl.  +  13°  39' 
A  and  B 

Groombridge      07043    in    49^8 

7550.     ^  2019  rej.     (8.0.  .  .9.2) 
R.  A.  16"  7m  42"        Decl.  —  10°  7' 

1910.260            152-95              22"  54 
.356            152.38              22.06 
-395             152.95              22.38 

1908.288            325?4                34780 
-331            324-9                35-09 
•425            325.5                34.65 

1910.34              152.76              22.33 
Probably  unchanged. 

1908.35              325-3                34.85 

One  of  the  2  components  has  a  small  proper  motion,  and  it 
is  impossible  to  say  which  it  is.    I  have,  therefore,  connected  a 
third  small  star,  which  is  DM  (13°)  3066.     Remeasuring  this 
after  a  proper  interval  will  show  what  the  fact  is. 

A  and  C  (9.8) 
1908.288             I37?68            167788 
•331             137-40            167.61 
.422            I37.70            167.62 

7551.    49  Serpentis.    2  2021.     (6.  7...  6.  9) 
R.  A.  16"  7m  42"        Decl.  +  13°  51' 

A  and  C  (10.1) 

1909.381             I24°.6o            240714 
.400            124.52            240.43 
.438            124.80            240.34 

1908.35              137-59            167.70 

1009.41               124.64            240.30 

209 


Burnham:   Measures  of  Proper  Motion  Stars 


Comparing  this  with  the  three  measures  by  O2  and  H2,  each 
on  i  n,  we  have  for  the  proper  motion  of  AB  : 
07477    in     159*2 

A  and  D  (10.0) 
1911.411              51^98             123^84 
.430              51.65             123.61 
•433              5I-7S             123.56 

Auwers         0:448    in     I59?4 
Bossert         0.459    in     159-6 
Porter           0.433    in    160.5 
Boss              0.459    in     158.4 

1911.42                51.79            123.67 
C  and  E  (11.5) 

I9II.4II                 226?2                       I3''24 

.430            225.1                13.23 
.433            224.7                13-39 

7562.     2  2031  rej.     (7.  6...  9.  7) 
R.  A.  16"  iom  9'        Decl.  —  i°2i' 

1910.356            230^38              20:44 
•395            230.22              20.74 
.397            229.43              20.57 

1911.42              225.3                13.29 

Comparing  the  present  positions  with  the  prior  measures  by 
Doo  and  P,  we  have  for  the  annual  change  in  the  large  star  : 

AC        R.  A.  +  o!'oi  i        Decl.  —  0:021 
AD                    0.016                    0.026 

1910.38              230.01              20.58 

The  measures  do  not  appear  to  show  any  proper  motion  in  A. 
A.  G.  Nico.     o"ios    in    270^0 

7563.    a  Coronae  Bar.    22032.     (5.0...  6.1) 
R.  A.  16"  iom  1  1'       Decl.  +  34°  10' 
A  and  D  (10.5) 

1908.288             86?o8             63:16 
.331             85.80             63.34 
•370             85.78             63.40 
.383             85.73             63.28 

Therefore  the  proper  motion  of  v  Coronae  is  : 
0:027    in     150?! 

The  early  measures  by  Sh  have  large  errors  in  distance,  anc 
cannot  be  used  in  this  connection. 
From  the  star  catalogues  we  have  : 

Auwers         0:026    in    171^4 
Boss              0.028    in     158.1 

7583.    2  3103  r<?/.    (8.  8...  9.  7) 
R.  A.  1  6"  14™  24'        Decl.  —  3°  40' 

1908.34               85.85             63.29 

The  seven  sets  of  measures  of  this  small  star  by  2,  A  Je,  Do 
and  P  (1836  to  1908)  should  give  a  more  accurate  value  of  the 

1911.411            3os?2               24:67 
.414           304-4               24.36 
.430           304.4               24.62 

proper  motion  of  the  principal  star  than  that  found  by  meridian 
observations.    From  the  micrometer  we  have  : 
0^276    in    258?5 

Some  of  the  results  from  meridian  positions  are  : 
Auwers         0:326    in    259^2 
Porter           0.280    in    258.9 
Newcomb      0.287    in    255.8 
Boss             0.303    in    252.1 

7570.    v  Coronae  Bar.    Sh  223.     (5.  9...  12.  5) 

RA     Tfib  TTm  c£«           rifrl    -4-  in°  •>•?' 

1911.42             304.7               24.55 

7593.    SD(3°)392g.    (7.  6...  8.7) 
R.  A.  16"  16™  14'       Decl.—  3°  58' 

AandB 
1910.225             22?39            101:65 
.244             22.15            101.77 
.260             22.50            101.29 
.263             22.40            101.55 

A  and  B 
1911.411             28?26             54:77 
.430             28.05             54.58 
.433             28.48             54-25 

1910.25               22.36            101.56 

I9II.4II                    22?8O                 I0i;'96 

.414              22.37            102.17 
.430           22.30          101.79 

1911.42                28.26              54-53 

.433              22.42             101.91 

A  and  C  (10.8) 
1911.411             22?4i             86:54 
.430             22.46             86.27 
.433             21.92             86.63 

1911.42             22.47          101.96 

1912.236                   22?  18                 102:02 
.255                    22.40                 102.02 
.274                    22.30                 102.17 

1911.42               22.26             86.48 

1912.25                      22.29                 102.07 

210 


Burnham:   Measures  of  Proper  Motion  Stars 


There  seems  to  be  a  proper  motion  in  one  of  these  stars  of 
about  o"i7.    The  relative  change  is  confirmed  by  the  meridian 
positions  in  the  A.  G.  Stras.  and  Warsaw  Catalogues.    To  show 
whether  or  not  the  smaller  component  has  any  motion,  I  have 
connected  a  star  n.8m: 

A  and  C 
1910.260            340?  10              68*46 
.263            340-30              68.00 
.299            340.18              68.20 

7612.    23Herculis.     (6.  4...  9.0) 
R.  A.  16"  18™  20'       Decl.  +  32°  37' 

1911.411              i8?6o             34"o8 
.430              18.08             34.13 
.433              18.25             33.96 

1911.42               18.31              34.06 

The  four  positions  by  OS,  A  and  fl  (1840-1911)  give  for  the 
apparent  motion  of  A: 

0*026    in    22?  i 

OS  calls  the  companion  8.5m;  and  A  g.om.    It  is  possible, 
though  not  probable,  that  this  has  some  motion  of  its  own. 
The  catalogues  give  for  A: 

Auwers         o"o2O    in     I46?2 
Boss             0.022    in    144.9 
Newcomb     0.036    in     141.2 

7624.    CD  Herculis.    P  625.    (5.0...  12.0) 
R.  A.  16"  19™  53'       Decl.  +  14°  19' 

A  and  C  (11.5) 
1907.444            ioi?2                31*73 
.463            101.7                32-H 
.482             102.0                31.70 

1910.27             340.19             68.22 

1911.414           340?  10             68*52 
.430           340.25             68.53 
•433            340.45             68.54 

1911.43             340.27              68.53 

B  and  C 
1910.260            243  ?86              68;'8s 
.263            244.28              68.77 
.299            244.45              69.35 

1910.27              244.20              68.99 

1911.414            244?57              69"i9 
.430            243.83              69.65 
.433            244.22              68.83 

1911.43              244.21              69.22 

7596.     Y  Herculis.    Sh  227.     (3.  5...  9.  5) 
R.  A.  16"  16™  38'        Decl.  +  19°  26' 

B  and  C  (12.2) 
1910.225            207?6o              84*59 
.260            297.33              84.94 
.263            298.00              84.59 

1907.46              101.6                31-85 

The  six  positions  of  the  distant  companion  (1879-1907)  give 
for  the  proper  motion  of  A  : 
o"o84    in     I32?6 

From  meridian  observations  : 
Auwers         o"o6s    in     159?! 
Boss              0.078    in     146.1 

A  later  set  of  measures  will  not  sensibly  change  the  result 
given  above: 

1912.353                  IOI-0                      3l"4I 

.389            100.8               31.53 
.408            101.5               3I-48 

1910.25              297.64              84.71 

It  is  very  probable  that  B  has  no  sensible  proper  motion  ;  and 
that  the  value  of  the  movement  of  A  derived  from  the  measures 
(1844-1903)  is  more  nearly  correct  than  that    from  meridian 
observations.    For  greater  certainty  I  have  connected  a  faint 
star  with  B. 

Measures              o"o66    in    340^3 
Auwers                0.083    in    308.6 
Rechenberg          0.080    in    305.3 
Newcomb             0.060    in    307.5 
Boss                     0.062    in    309.0 

7597.     Ho  402.     (8.  5...  12.0") 
R.  A.  16"  i6m  47'        Decl.  —  12°  52' 

1910.452            23o?7                  9747 
.458            229.3                 9-31 

1912.38             101.1               31-47 

7633.    22048.    (6.  3...  9.0) 
R.  A.  16"  22""  20'       Decl.  —  7°  52' 

A  and  C  (11.7) 
1910.263            299?30            131*78 
.397            298.80            132.21 
.414            299.37            132.07 

1910.36              299.16            132.02 

For  the  proper  motion  of  AB. 
Bossert         o'.'ii4    in     195?! 
Porter           0.079    in    228.8 

1910.45              230.0                 9.39 

Wrongly  identified  in  Ho;  the  SD  number  is  4499  instead  of 
4497. 

211 


Burnham:   Measures  of  Proper  Motion  Stars 


7640.    P  815.    (8.  i...  10.  4) 
R.  A.  16"  23m  16'       Decl.  +  43°  1  1' 


1910.167 
.184 
.186 
•203 


A  and  B 
338?8 
338.7 
338.5 
337-8 


10*67 
10.50 

10.37 
10.39 


1910.18 


338.4 


A  and  C(n.5) 

1910.184     i6o?72 

.203     160.15 

.225     160.75 

.244     160.32 


10.48 


67*91 
68.05 

67.49 
66.90 


1910.21 

1910.  184 
.203 
.225 
.244 


160.48 

BandC 
l6o?37 
160.08 
159.97 
160.52 


67.59 


79*OO 
78.67 
78.07 
77.84 


1910.21 


160.24 


78.39 


The  measures  of  C  show  that  the  proper  motion  is  in  B. 
From  the  measures  to  1905,  this  motion  is : 

0*143    m    323°i 

A  and  DM  (43°)  2608 

1825       A  R.  A. +40!  6       A  Decl. +  21*8  Weisse 

1875  40.0  24.0  A.  G.  Bonn 

1910.2  40.0  23.1  p 


7642.    22052.    (7.5...  7-S) 
R.  A.  16"  23"  37-        Decl.  +  18°  40' 

A  and  C(ii.6) 
1911.468 


.471 
.487 


26?7O 
27.00 
26.83 


147-71 
I47-IS 


1911.48 


26.84 


I47.49 


This  pair  seems  to  belong  to  the  61  Cygni  class.    Third  star 
for  an  independent  value  of  the  proper  motion  of  AB. 

A.  G.  Ber.     0*534    in    320?o 
Porter  0.528    in    319.7 


7645.    23104-    (8.5...IO.O) 
R.  A.  16*  23"  45"        Decl.  —  14°  17' 

A  and  C  (9.1) 

1912.487  ?8?73  108*58 

.504  78.93 

.526  78.75 


109.02 
108.81 


1912.50 


78.80 


108.80 


From  a  comparison  of  this  with  the  prior  measures,  it  is 
evident  that  one  of  these  stars  has  a  proper  motion  of  0*081 
in  3o6?2  (±  180°). 


7649.    \Ophiuchi.    22055.     (4.0...  6.  i) 
R.  A.  16"  24™  52'        Decl.  +  2°  15' 


AB  and  C  (ii.o) 
1912.411  i6p?8o 

.427  169.93 

.430  170.00 


119.04 
118.50 


1912.42 


169.91 


118.75 


Although  half  a  dozen  orbits  have  been  worked  out,  the 

apparent  ellipse,  and  therefore  the  real  orbit,  is  as  uncertain 

now  as  it  was  half  a  century  ago,  and  it  is  likely  to  remain 

indeterminate  for  a  still  longer  time. 

The  proper  motion  of  the  binary  system  is  given : 

Auwers  o'.'ooy    in    2I5?8 

Boss  (P.  G.  C.)    0.097    in    209.7 


7668.    31  Herculis.    P  816. 
R.  A.  16"  27°  o'       Decl.  +  33°  46' 

The  9.5m  star,  DM  (33°)  2741,  should  be  in  the  field  with 
31  Herculis,  and  3?7  />  and  i.'7  s.    There  is  no  star  in  or  near 
this  place  now.    The  small  star  may  be  variable,  but  the  ex- 
planation is  more  likely  to  be  found  in  an  error  in  the  DM. 
The  proper  motion  of  31  Herculis  is : 

Auwers        0*042    in    26o?3 
Boss  0.039    in    235.9 


7675.    22065.    (8.0...  8.7) 
R.  A.  16'  28™  36'       Decl.  +  40°  14' 


1909.112 

.164 
.186 


A  and  B 
2i7?o 
216.7 
216.6 


30.98 
31.13 


216.8 


30.97 


1909-15 

The  measures  of  2,  A  and  P  give  an  apparent  motion  for  A  of 
0*015  in  332?2,  but  this  change  may  be  in  either  component.  I 
have  therefore  connected  a  third  star  to  settle  the  question  of 
motion  hereafter. 

A  and  C  (12.8) 

1909.164  25?40  79*74 

.186  25.95  79-65 


1009.17 


25.67 


79.69 


7682.    Young.    (8.0... 9.5) 
R.  A.  16"  29™  26'       Decl. +  58°  i' 

AB  and  Dreyer  6187 
1910.280  :8o?i8  208*8 

•337  180.47  206.2 

-395  l79-8o  206.2 

1910.34  180.15  207.1 

Nebula  small,  but  ill-defined.    Its  place  (1860)  is  therefore: 
R.  A.  16"  29™  i'       Decl.  +  58°  o' 16" 


212 


Burnham:   Measures  of  Proper  Motion  Stars 


7699.   p  820.    (8.0... 9.5) 

R.  A.  16"  33m  8s        Decl.  —  2°  52' 

A  and  C  (12.9) 
1911.219  257^42  162^70 


.260 


2S7-43 


162.38 


1911.24  257.42  162.54 

For  the  proper  motion  of  AB. 

Radcliffe     o'/ii2    in    2Oo!9 

7702.     riDraconis.    2  30,  App.  I.    (5-O...5-O) 
R.A.  16" 33™ 2is        Decl. +  53°  8' 

A  and  C  (n.o) 
1910.128 


.148 
.164 


122.20 
122.65 
122.40 


118.91 
119.02 


Bl 
Bl. 


1910.15  122.42  118.81 

The  early  measures  are  discordant  in  distance : 
1879.56  122° 16  ii6"4i  in 

1880.21  122.32  117-39  In 

The  proper  motions  of  the  large  stars  are  given : 
A        Auwers      0^029    in    33&°6 

Boss  0.025    in    324.2 

B        Auwers      0.038    in    303.7 

Boss  0.022    in    335.8 

Whatever  this  motion  is,  it  is  exactly  the  same  for  each  star. 


7708.    2  2080.    (8.0... ii. 8) 
R.  A.  16"  34m  26'        Decl.  +  38°  34' 

A  and  B 
igio.337  24?6  2^72 


24.6 


2.95 


1910.36  24.6  2.83 

The  principal  star  has  a  small  proper  motion. 

A  and  C  (10.8) 
1910.337  2i9°74 


.356 
•  375 


219.62 
220.13 


109.79 
109.20 


1875 
1910.2 


1910.36  219.83  109.48 

A  and  DM  (38°)  2811  (8.1) 
AR.A.33?6       A  Decl.  6IT3       A.  G.  Lund 
33-4  63.6       P 


7714.    42  Herculis.    22082.     (4.0... 10.7) 
R.  A.  16*  35m  29'       Decl.  +  49°  i°' 


1912.236 
.274 
.296 

1912.27 


91.7 

92-4 

91.9 


24.20 
24.12 
24-39 
24.24 


The  distance  is  slowly  increasing.  If  the  large  star  has  the 
jroper  motion  indicated  by  the  meridian  positions,  this  is  a 
ystem  of  the  61  Cygni  class.  There  is  no  third  star  available 
"or  measurement. 

Auwers  o"o23    in    335?o 

Battermann         0.047    >n    3°i-9 
Boss  0.044    >n    307-4 


7726.    0953-    (8.0... 8.6) 
R.  A.  16"  37™  2i«        Decl.  +  70°  2' 

AB  and  C  (10.0) 
1911.280  I5i?8  72^21 

.302  152.4  72.21 

1911.29  152.1  72.21 

AB  and  O.  Arg.  N.  16458 
1911.241  46?8o  i46"53 


.260 
.280 


46.90 

46-85 


146.86 
146.24 


1911.26  46.85  146.54 

For  the  distant  star  there  are  meridian  positions : 
1842  47?6  I45"9  O.  Arg.  N. 

1900  47.4  146.8  Greenwich 

1905  47.0  147.3  A.  G.  Berlin. 


7730.     22087.     (8. 2... 8. 2) 
R.A.i6"37ra33'        Decl.  +  23°  54' 

A  and  C  (11.5) 

354? 18  121^32 

353.65  121.16 

353-77  121-65 


1911.299 
.302 
•  334 


1911-31 


353-87 


121.38 


h  1970  is  about  im  50'  /;  measures  of  this  are  given  here  as 
No.  7745- 

The   proper   motions   of  the    ^  components   are  given   in 
A.  G.  Berlin : 

A  o"o79    in    3OO?3 

B  o.ioo    in    287.3 

As  these  stars  are  relatively  fixed,  the  motions  must  be  the 
same. 


7733. 

R.  A.  16"  38m  8' 


2086. 

Decl.  —  o°  20' 


The  wide  pair  measured  by  Glasenapp  (see  General  Cata- 
logue) is  25?o  />  and  93"2  H  of  2  2086. 

A  and  B  (9-3-  --9-5) 

I9II.I84  300?  58  I02!'22 

.200  300.68  101.94 

.219  300.35  102.14 


1911.20 


300.54 


102.10 


213 


Burnham:   Measures  of  Proper  Motion  Stars 


A  and  a 

(II.O) 


B  and  a  (12.5) 

191  1 

.184 

141 

?2 

2 

"29 

1907 

197 

348?3 

62790 

.200 

146 

.1 

2 

•49 

.217            346.6 

62.83 

1911 

.19 

143 

.6 

2 

-39 

.258 

347-8 

63-50 

The  near  companion  not  previously 

seen. 

1907.22 

347-6 

63.08 

C  and  a 

1907. 

197 

io8?6 

io6"37 

7735.    02(App.) 

149-    (6.7-- 

7-3) 

. 

217 

258 

107.6 
108.5 

106. 
105 

45 
76 

R.  A.  I6" 

38™  19' 

Decl. 

+  20° 

57' 

1907. 

22 

108.2 

106. 

19 

1911 

280 

I35°23 

98773 

1911. 

241 

io8?30 

105794 

299 

135 

-25 

98 

.88 

. 

260 

107.83 

105. 

61 

302 

135-04 

99 

38 

• 

302 

107.92 

105. 

74 

1911 

29 

135 

17 

99.00 

1911. 

27 

108.02 

105. 

76 

Relatively  fixed. 

The  measures  of 

Care 

continued  for 

a  more  accurate  proper 

motion  of  41  Herculis. 

The  positions 

of  the 

faint  star  show 

that  C  has  no  motion. 

7738.    ti  Herculis. 

Auwers 

07336    in 

233  °4 

R.  A.  1  6  3°    47 

Decl 

+  39°  9' 

Porter 
Boss 

0.341    in 
0.352    in 

224.8 
218.2 

1911. 

241 

262?60 

113770 

. 

258 

262.28 

"3 

90 

. 

260 

262.40 

113 

61 

. 

280 

262.30 

"3 

83 

7745.     A.  G.  205. 

1911. 

26 

262. 

39 

"3 

76 

R.A 

i6"39 

m  28'        Decl. 

+  24° 

i' 

The  later  measures  compared  with  my  single  night  in  1879 
give  for  the  proper  motion  of  TI  Herculis: 

Measures  o7ooo  in  i$7?o 
Auwers  0.079  in  161.2 
Boss  o.ioi  in  160.4 

Newcomb     o.ioo    in     159.3 


7740.    41  Herculis.    (6. 2... 9.0) 
R.  A.  16"  39°  9'       Decl. +  6°  19' 

A  and  B 
1907.217  I9i?2  162^53 


.258 
.291 

191.2 
191.4 

163-15 
162.83 

1907.26 

191.3 

162.84 

1907.217 

.258 
.291 

A  and  C  (9.5) 
246?4 
246.3 
246.5 

159706 
159-50 
159-20 

1907.26 

246.4 

159-25 

1911.241 

.260 
.280 
.302 

246^28 
246.47 
246.18 
246.18 

158709 
158.20 
157-77 
157.83 

1911.27 

246.28 

157-97 

From  all  the  measures  of  AC  by  COS  and  0  (1854-1911)  the 
proper  motion  of  41  Herculis  is: 


This  is  the  planetary  nebula  h  1970  (Dreycr  6210).  In  the 
course  of  my  measures  of  all  the  well-known  planetary  nebulae 
in  1891  at  the  Lick  Observatory,  this  was  examined  with  others 
as  stated  in  the  introductory  remarks  (Publ.  L.  O.  II,  p.  159)  ; 
but  for  some  reason,  which  I  am  unable  to  explain  at  this  time, 
the  central  star,  which  is  characteristic  of  all  nebulae  of  this 
class,  was  not  seen.  At  the  present  time  it  could  not  be  over- 
looked with  any  moderate  aperture.  It  is  nearly  twelfth  magni- 
tude, and  appears  with  favorable  atmospheric  conditions  as  a 
sharp,  brilliant  point.  Doubtless  this  has  been  seen  by  others. 
If  it  is  not  variable,  I  cannot  account  for  my  failure  to  see  and 
measure  it  with  the  36-inch  at  Mt.  Hamilton. 

It  is  now  connected  by  measures  with  the  nearest  compari- 
son star. 

h  1970  and  star  (12.3. .  .11.3) 


1908.156 

271  °73 

123719 

.249 

271.85 

123.64 

.266 

271.92 

123-77 

9.167 

272.17 

124.64 

.227 

271.65 

123.84 

-304 

272.20 

124.17 

1908.72 

271.92 

123.87 

7747.    43  Herculis.    Sh  239.     (S-S-.- 
R.  A.  16"  40"-  4'       Decl.  +  8°  48' 

A  and  B 
I9".353  230^23  82743 


.356 
•  373 


229.70 
229.80 


82.44 
82.24 


1911.36 


229.91 


82.37 


214 


Burnham:   Measures  of  Proper  Motion  Stars 


From  meridian  observations  the  amount  and  direction  of  the 
proper  motion  of  43  Herculis  is  somewhat  uncertain : 
Auwers         o'.'oso    in    335^7 
Boss  0.016    in    354.7 

The  four  positions  by  OS,  A  and  fJ  (1852-1911)  give: 
o"ois    in    340^8 

It  is  safe  to  assume  that  the  pm  star  has  no  motion  which 
would  affect  this  result,  but  I  have  connected  with  it  a  very 
small  star : 

B  and  C  (12.0) 

I9II-356  I33°i3  98''57 

•375  I33-23  98.47 

-392  133.70  98-65 


1911.37 


133-35 


98.56 


7752.    2  2100  rej.     (8. 5. ..10.7) 
R.A.  i6'4om38s       Decl.  +  50°  53' 


1907-331 
8.156 
8.192 


295  ?o 
298.2 
29S-3 


23^36 
23.63 
23.60 


1907.89 


296.2 


23-53 


The  only  other  measures  are  given  in  the  General  Cata- 
logue. 

7756.     Espin  76.     (9.7... 9. 9) 
R.  A.  16"  40-°  58"       Decl.  +  50°  50' 


1907-351 
8.425 
8.444 


44.0 
44.0 
46.6 


2.77 
1.97 
2.40 


1908.07 


44-9 


2.38 


7757.    22098.    (8.0... 9.0) 
R.A.  i6"4im2»        Decl.  +  30°  14' 

A  and  C  (9.5) 

1909.400     I36?i8  64^74 

10.148     135.12  64.08 

10.167     134-40  64.69 

1909.90      135-23      64.50 

A  and  D  (8.0) 

1909.400  i6?os  6i?57 

10.148  15.32  61.66 

10.167  15.30  61.62 

1909.90  15.56  61.62 

The  position  of  AC  by  2  is  evidently  only  a  rough  setting. 
The  meridian  observations  give : 

1875  I36?7  64^76  A.  G.  Leid. 

The  other  distant  star  has  a  very  faint  attendant : 

D  and  d  (14.0) 

1910.184  272?s  S:'6s 

.203  269.9  5-Sr 


1910.19 


271.2 


5.58 


7758.    19  Ophiudii.    22096.    (6.0... 9. 3) 
R.  A.  i6"4im7'        Decl.  +  2°  if 

A  and  B 
I9II-373  90^40  22"76 


•  392 
•395 


90-37 
90.26 


22.72 
22.72 


1911.39  90.34  22.73 

These  stars  appear  to  have  a  small  common  proper  motion. 
Auwers         o''o46    in    251^5 
Boss  0.037    in    238.9 

I  have  therefore  measured  a  third  star. 


1911.356 
•373 
•392 


A  and  C  (11.3) 
I94?2O 
I94.I5 
194-47 


213.46 
213.71 


1911.37 


194.27 


213-45 


7768.     22103.     (s.2...io.o) 
R.  A.  16"  44m  2'        Decl. +  13°  28' 

A  and  B 
1911.468  41 !o  5726 


•471 
.487 


40.3 
42.6 


5-23 
5-28 


1911.48 


4i-3 


5.26 


Measures  by  2,  A,  Sp  and  (3  on  14  n  (1830-1911)  give  for  the 
apparent  proper  motion  of  A : 

Measures      o!'oo8    in    35O°2 
Boss  0.037    '1    221.4 

It  is  not  likely  that  B  has  any  motion  which  would  change 
this  result,  but  for  greater  certainty  I  have  connected  two  very 
faint  stars  : 

A  and  C  (13.6) 

1911.468  246?!  I7"o8 
.471  244.8  17.98 
.487  244.7 18.23 

1911.48     245.2      18.06 

A  and  D  (12.8) 

1911.468     I40?9  40*27 

.471     141.8  40.53 

.487     141.8  40.72 


1911.48 


40.51 


7770.    A.  G.  206.    (9. 3... 9. 7) 
R.A.  i6"44m35'        Decl.  +  67°  o' 


1907.331 
•  351 


I55°5 
I55-I 


5"66 
5.69 


1907.34  155.3  5-67 

By  an  error  of  the  printer,  the  position-angle  by  Doolittle  of 
I54?7  is  printed  i64?7  in  the  General  Catalogue. 


215 


Burnham:   Measures  of  Proper  Motion  Stars 


7775. 

Schj  13. 

(8.0. 

..12.6) 

A  and  C 

(8.0) 

R.  A.  16" 

45-8' 

Decl. 

+  4°  59' 

1907 

33i 
35i 

317? 
317. 

80 
42 

II77I2 

117.65 

A  and  B 

463 

317. 

90 

117.26 

1911-392 

56° 

27 

122746 

1907 

38 

3I7. 

71 

"7-34 

•  395 
.411 

55 
56. 

93 
oo 

122.13 
121.65 

From  six  sets  of  measures  of 

AB  (1846-1907)  the 

apparent 

1911.40 

56. 

07 

122.08 

o7o83    in 

i6a?s 

No  other  measures  of  the  distant  star.    The  other  has  some 
motion : 

Bossert         0^143    in    iss?3 
Porter          o.uo    in    155.9 


7779.    52  Herculis.    fJ  627.    (5.0... 10.5) 
R.  A.  16"  45™  43'       Decl.  +  46°  12' 

A  and  D  (12.0) 

1911.142     230^20  66702 

.164     230.17  66.35 

.184     230.63  66. 10 

1911.16     230.33     66.16 

A  and  E  (12.0) 
1911.142     268?70 


.164 
.184 


268.57 
268.65 


145729 
145-91 
145.81 


1911.16 


268.64 


145.67 


The  measures  of  the  two  small  stars  give  for  the  proper 
motion  of  52  Herculis: 

07094    in    I44?4 

Some  of  the  values  from  meridian  positions  are : 
Auwers  o"073    in    210^7 

Boss  0.076    in    163.4 

Groombridge       0.059    m     147-3 

Aitkin  finds  the  10.5  m  companion  to  52  Herculis  a  close 


7780.    2  2108  rej.    (8.  4...  10.3) 
R.  A.  16*46"  4-       Decl.  +  55°  21' 


7-351 
8.102 


3S2.I 
351.9 


26776 
26.67 
26.59 


1907.62 

No  early  measures. 


352-0 


26.67 


7800.    O2.H7.     (7.2...H.8) 
R.  A.  16*  49°  19*        Decl.  +  44°  36' 

A  and  B 
1907-331  2I9?8  i87i3 


•  351 
.463 


219.1 

220.1 


18.20 

18.25 


From  six  sets  of  measures  of  AC  (1874-1907)  the  apparent 
motion  of  C  is : 

o7n9    in    2o8?8 

At  least  two  of  these  stars  have  a  considerable  proper  motion. 


7830.    2  32,  App.  I.     (7.0. ..7.1) 
R.  A.  16"  54m  34*        Decl.  +  47°  32' 


1909.112 
.148 
.151 


262.57 
262.80 


i 13-39 
"3-59 
"3-57 


1909.14  262.68  H3-52 

From  the  measures  by  2,  A  and  p,  one  of  these  large  stars 
should  have  a  proper  motion  of 

07024    in    I35?o  (±  180°) 

I  do  not  find  any  motion  given  in  the  star  catalogues. 

A  and  a  (11.2) 

1909.112  5i°6  2794 

.167  51.8  2.92 

1909-14  51-7  2.93 

The  small  companion  to  A  was  detected  by  Aitken. 

7845.    34  Ofhiuchi.    2  33,  App.  I.     (5. 8... 6. 3) 
R.  A.  16'  58"  T       Decl.  +  13°  47' 

B  and  a  (10.0) 
1909.148  267?so  151752 


_.ifc_ 
1909.16 


267.63 
267.77 


I5L75 
I5L59 


267.63 


o  and  b  (10.5) 
1909.167  209° 57 

.227  209.28 

.304  209.27 


151.62 


98.38 
98.50 


1909.23             209.37  98.51 

The  only  other  measures  are: 

151744  2n 

152.11  an 

From  the  three  positions  the  proper  motion  of  34  Ophiuchi  is : 

07124    in  I78?7 

0.134    >n  199.4 


1887.52 
1894.69 


266?55 
267.03 


Eng 
Eng. 


Measures 
Porter 
Boss 
Auwers 


in 
in 

o. 136    in 
0.134    in 


173-8 
185.6 


1907  38 


219.7 


18.19 


The  measures  of  the  small  stars  should  be  continued. 


216 


Burnham:   Measures  of  Proper  Motion  Stars 


The 
1903) 

7855.     60  Herculis.    H  V.  133.     (S.O...II.D) 
R.  A.  16"  59m  49*        Decl.  +  12°  54' 

1911.162            309?30              55^05 
.184            309.20              54.88 
.200            309-02              55.10 
.219            309.22              55.15 

7864.     H  2804.     (9-  8...  10.  i) 
R.  A.  17"  om  3  1  '        Decl.  +  39°  9' 

1907-331            276?4               I4l'74 
8.370           277.1               14.41 
8.422           277.1               14.57 

1908.04             276.9               14.57 

There  seems  to  be  no  doubt  of  change  in  angle  and  distance. 
The  components  are  not  given  in  DM. 

7872.    2  2I2&     (8.0...  9.  2) 
R.  A.  17"  im  43s        Decl.  +  59°  44' 

I907-33I              50?o               uTpi 
7-351              49-9                11-84 
8.370              51.2                11.91 

1911.19              309-18              55-04 

proper  motion  of  60  Herculis  from  the  measures  (1852- 
is: 

Measures      o"o6i     in     105^4 
Auwers          0.032     in      93.6 
Boss              0.055    in     107.9 

7858.     Herculis  210.    22120.     (6.  4...  9.  2) 
R.  A.  17"  ora  o"        Decl.  +  28°  15' 

A  and  B 

1907.331            24i?4                8"68 
.348           242.4                8.79 
.351            241.4                8.70 

1907.68                50.4                11.89 

Very  little  relative  motion.    Appears  to  be  a  pair  of  the  61 
Cygni  class.    The  proper  motion  of  the  larger  star  is  given  : 
Porter           0^466    in    301  ?6 
Kustner         0.442    in    302.1 

A  third  star  should  be  connected. 

7873.    02323.    (7.  4...  10.5) 
R.  A.  17"  im  44*       Decl.  +  47°  8' 

1911.375              93  ?2                  8'/53 
-392              93-1                  8.36 
-430              93-5                  8.53 

1907.34             241.7                8.72 

A  and  C  (9.6) 

1907-331            174°  15            145*04 
.348            I74-32            145-69 
.351            174.22            145-66 

1907.34              174-23             I45-46 
A  and  A.  G.  Camb.  8000 
1907.331            A  Decl.  =  15740 

The  distant  star  is  measured  for  determining  hereafter  how 
much,  if  any,  of  the  proper  motion  is  in  the  small  star  B. 
The  measures  give  for  the  proper  motion  of  A  : 

7863.     P  823.     (8.  2...  9.  2) 
R.  A.  17"  om  29s        Decl.  +  0°  49' 

In  Part  I  of  the  General  Catalogue  the  declination  of  this 
star  is  erroneously  printed  —  o°  49'. 

AB  and  DM  (o°)  3634  (9.5) 

1912.545             8s?6o            I7i"59 
.562             85.65            171.55 
•564             85.45            171-69 

1911.40                93-3                  8.47 

The  change  is  due  to  the  motion  of  A.    From  measures  by 
O2,  A,  Doo,  Hu  and  P  on  19  n  (1848-1911)  the  proper  motion 
of  the  large  star  is  : 
oTo46    in    223!  7 

7875.     A.  G.  208.     (9.0...  9.  2) 
R.  A.  17"  2m  8'        Decl.  +  1°  53' 

1912.465            244?o               26^00 
.504           243.6               26.14 
.507           244.4               25.04 

1912.49             244.0               26.03 

One  of  these  stars  has  a  small  proper  motion  of  at  least  o"2. 
Should  be  connected  with  a  third  star. 

7876.    ^  2127  rej.    (8.  2...  10.  5) 
R.  A.  17"  2m  30'        Decl.  +  31°  15' 

1907.217            275?!                i6"2i 
-233            277.1                16.11 
•  331            274.9                16.52 

The 

1912.56               85.57            171.61 

only  other  position  from  the  star  catalogues  is  : 
1859          84?7           172^5           Hd  Zones 

1907.26              275.7                16.28 
The  only  other  measures  disagree  in  angle  and  distance. 

217 


Burnham:   Measures  of  Proper  Motion  Stars 


7882.    H  264.    (9...  ii) 
R.A.  I7'3m26'        Decl.  +  36°6' 

1907.233            2oi°3               H"i4 
.331            201.6               13.80 
.348           201.5               13.78 

7894.    Espin  77.     (6.  5...  1  1.  2) 
R.  A.  17"  5™  20'       Decl.  +  51°  o' 

1911.356           272?s               I7fo6 
•  373            273.5               16.85 
•  375           273.2               17.08 

1907.30             201.5               13.91 

A  and  5^2  tn  star  (=  Ho  412) 
1907.331             99-9             245776 

The  small  star  in  the  field  sf,  DM  (36°)  2828,  has  a  small 
companion;  magnitudes  9.5  and  13.5;  not  given  in  the  General 
Catalogue: 
1907.217            184?!                 6"09 
•331            185.5                 6.97 
.348            184.8                6.67 

1911.37             273.1               17.00 
Proper  motion? 

A.  G.  Camb.       o"oi2    in    360^0 
Battermann         0.024    in    311.8 

7898.     2  2135.     (7.  i...  8.  4) 
R  A  17"  6"'  58*        Decl  +21°  22' 

1907.30             184.8                6.58 

DM  (36°)  2828  and  2830 

1907-233              54-8              I43"33 
•331              54-7             143-01 

A  and  B 
1911.449            I78?6                 7739 
.468            179.6                7.28 

•171             178.  [                  7.27 

1907.28               54-7              143.17 

7885.    \\Ofhiuchi.    p  1118.    (3.4.-.  3-9) 
R.  A.  17"  3m  30"       Decl.  —  15°  34' 

AB  and  C  (13.0) 
1911.414            I43?23             94775 
.449            142-70             94-75 

1911.46              178.8                 7.31 

One  of  these  stars  has  a  small  proper  motion.    I  have  tl 
fore  connected  a  third  star. 

A  and  C  (n.8) 
1911.449           2o8?os            I59"oo 
.468           207.77            159-12 
.471            208.20            158.63 

.468            143.17             94-i6 

1911.46             208.01            158.92 

1911.44             143.03             94.55 

AB  and  D  (11.5) 
1911.414            287?68             99?68 
.449            288.03              99-76 
.468            287.55              99.85 

7903.    22138.    (8.0...  8.3) 
R.  A.  17"  7m  40'       Decl.  +  54°  39' 

1911.44              287.75              99-76 

Comparing  these  positions  with  the  measures  of  1898,  we 
have  an  independent  value  of  the  proper  motion  of  the  large 
star,  but  the  time  interval  is  too  short  for  a  final  correction  : 

1909.167            I36?4                22?25 
•170            135-8                22.23 
.186            136.0                22.39 
.266            136.9                22.31 

AC       R.  A.  +  o?oo6       Decl.  +  o7io2 
AD                    0.034                    0.119 

Hence  the  motion  of  t\  Ophiuchi  is  : 
o?ii2    in    io?3 

Other  values  from  meridian  positions  are  : 
Auwers                         07097    in      2?6 
Boss                              0.093    in    22.8 
Newcomb  (Stand.)      0.080    in     12.4 
Newcomb  (F.  C.)         0.095    in    15.3 

7893.    22131.     (7.  5-..  8-  5) 
R.  A.  17*  5"  6'        Decl.  +  30°  30' 

1909.20              136.3                22.29 
No  relative  motion  since  1830. 

7914.     a  Here  ulis.    22140.     (3.0...  6.1) 
R.  A.  17*  9™  10"        Decl.  +  14°  32' 

A  and  D  (10.6) 
1912.427              39°33              83779 
.465              38.81              83.70 
.485              38.77              83.77 
.487              39-02              83.49 

1008.288            I79°i               24^38 
•331            178.5               24.30 
.370            178.9               24.29 

1912.47                38.98              83.69 

For  the  proper  motion  of  o  Herculis  we  have: 
Auwers         0*049    in    326?! 

1908.33              178-8                24.32 
Wr»  rTiana**  in  ancrlp  nr  ftislanrp  sinr.p  1830. 

Newcomb      0.032     in     337.8 
Boss             0.020    in    336.7 

218 


Burnham:   Measures  of  Proper  Motion  Stars 


rom  the  three  measures  of  AD  (1890-1912)  on   ion,  the 
ion  of  the  large  star  is  : 
o'/056    in    39?2 

is  very  improbable  that  D  has  any  sensible  motion.    This 
be  confirmed  later  by  measures  of  AC. 

7925.    2  2146.    (8.0...IO.O) 
R.  A.  17"  iom  27"        Decl.  +  54°  16' 

A  and  DM  (54°)  1869  (8.9) 
1909.151              5i?i3              89"oo 
.167              51-24              88.73 
.170              50.97              88.78 

7948.    S  686.    (7.9.  ..8.1) 
R.  A.  17"  13™  17'       Decl.  +  28°  52' 

1911.430                4?20              52*87 
•433                4.25              52.6i 
•449                4-40              52.73 

1911.44                 4-28              52.74 

One  of  these  stars  has  a  small  proper  motion.     The  four 
positions  by  S,  Cin  and  0  (1825-1911)  give  for  the  apparent 
motion  of  A  : 
o"O26    in     io?9 

A  third  star  should  be  connected  with  one  of  the  components. 

7962.    S  2155.     (6.  2...  9.  5) 
R.  A.  17*  I4m  37'        Decl.  +  60°  50' 

I9H.375             "4-1                  9"9i 
.392            113.2                 9.91 
-395             H3.3                  9-86 

1909.16                51.11              88.84 

bird  star  measured  for  proper  motion  of  AB  if  any.    For 
further  observations  with  the  micrometer  are  necessary. 
A.  G.  Harv.      o:'i35    in    333^8 

rom  meridian  positions  we  have: 
1842           5i?2           9i':8           O.  Arg.  N. 
i87S            50.3           90.0           A.  G.  Harv. 

7926.     U  Ophiuchi.    H  854. 
R.  A.  17"  iom  27'        Decl.  +  l°  21' 

1912.427            357?7                20^29 
•430            357-0                20.64 
•465            357-S                20.78 

1911.39              113.5                  9-89 

The  proper  motion  of  A  from  meridian  observations  is  un- 
certain : 
Kustner               0*031     in    315?! 
Greenwich           0.035    in        4-8 

The  measures  of  the  9.5  m  star  imply  a  much  smaller  motion 
of  about  0*006  in  260°. 

7968.     22150.     (9.  3...  10.  2) 
R.  A.  17"  15"'  io-        Decl.  +  1°  41' 

A  and  B 
1912.427            200?7                 9*10 
.430            200.3                  9-21 
.465            200.7                 9-31 

1912.44              357.4                20.57 

ariable  6.0  to  6.7  m  in  about  20".    The  change,  if  any  in  the 
tion  of  the  faint  star,  is  small. 

7940.     O2326.     (7.  2...  11.  5) 
R.  A.  17"  12™  34'        Decl.  +  9°  39' 

I9II.4I4                 2I3?2                      l6?02 

.430           212.7              16.09 
.433           212.8               16.16 

1912.44              200.  6                 9.21 

One  of  these  stars,  presumably  the  larger,  has  a  small  proper 
motion. 
A  and  DM  (i°)  3422 
1912.427              57?34            163*58 
•430              57.60            163.41 
•465              57.41             163.89 

1911.43             212.9               16.09 

omparing  this  position  with  those  of  O2  and  Hu,  we  have 
the  proper  motion  of  A  : 
0*046    in     IO2?2 

7942.     22147.     (7-1...  ii.  o) 
R.  A.  17"  i2m  53'        Decl.  +  29°  2' 

1908.288              93?!                  6"22 
•331              91.8                 6.16 
•370              93.7                 6.25 

1912.44                57.45             163.63 

The  only  other  measure  of  this  is  given  in  Part  II  of  the 

General  Catalogue. 

• 

7972.     70  Herculis.    8687.     (5.  5...  9.0) 
R.  A.  17"  15™  58'       Decl.  +  24°  37' 

A  and  B 
1911.430             s6?i8           220*98 
•433              56.15            220.58 
.449              56.35            220.68 

1908.33                92.9                 6.21 
nchanged. 

1911.44                56.23            220.75 

219 


Burnham:   Measures  of  Proper  Motion  Stars 


B  is  DM  (24°)  3168.    The  proper  motion  of  70  Herculis  is 
small,  and  somewhat  uncertain  : 
Auwers         0*037    in    282?3 
Boss              0.018    in    266.8 

As  B  appears  to  share  the  motion  of  A,  whatever  it  is,  I  have 
connected  with  it  a  faint  star. 

8017.     22165.     (7.0...  8.5) 
R.  A.  17"  21"  35'        Decl.  +  29°  34' 

A  and  C  (10.2) 
1909-340           25i?55             06^66 
.342            251.62              96.54 
.3/8            251.82              96.96 

and  C  (12.2) 

ipii-433            314-95             146*49 
.449            3I4-90            146.97 

1909-35              251.66              96.72 
C  and  c  (n.i) 

1911.44              314-92             146.73 

1909.342             I79?s8              48*72 
-378            179-10              48.78 

• 

7976.    72  Herculis.    (5.5...) 
R.  A.  17'  16™  10'       Decl.  +  32°  3^ 

B  and  C  (12.5) 
1911.184            2i4?3                 8*79 
.200            215.1                 8.99 
.219           217.9                8.52 

1909.36              179-34              48.75 

The  only  other  measures  of  C,  which  are  given  in  the  G 
Catalogue,  indicate  some  proper  motion  in  AB. 

8032.    22169.      (8.o...io.o) 

1911.20             215.8                8.77 

A  and  B  (9.6) 
1911.162            333°95            217*78 

R.  A.  I7h  23™  28"        Decl.  —  8°  19' 

1908.252             97?6               14*79 
-556             97-8               15.06 
•559             98.9               14-93 

.164            334  -JO            217.53 
•184            333-75            217.59 

1908.46               98.1               14.93 

I9II-I7              333-93            217.63 

From  the  seven  positions  of  AB  (1853-1911)  we  have  for  the 
proper  motion  of  72  Herculis: 
1*019    in    171^2 

From  the  catalogues: 
Auwers         1*030    in     I74?4 
Boss              i.  060    in     173.2 
Newcomb      1.054    in     173-7 

Change  in  angle;  probably  a  small  proper  motion  in 

8062.     P  Draconis.    0  1000.     (3.0...  14.0) 
R.  A.  17"  27"  43-        Decl.  +  52"  23' 

A  and  0(12.7) 
1912.351            I56?58            ii5"40 
.389            156.70            "5-75 
.411            156.43            115.77 

8003.     p  Herculis.    2  2161.     (4.0.  ..5.1) 
R.  A.  1  7'  19™  33'       Decl.  +  37°  15' 

A  and  C  (12.8) 
1911.222            223?07            119*99 
.260           223.43            119.11 
.299           223.45            119.28 

1912.38              156.57            115.64 

No  other  measures.    The  proper  motion  of  (J  Draco 
small  and  not  very  certain  in  amount  : 
Auwers                         0*020    in    290*9 
Groombridge                  0.017    in    298.7 
Newcomb  (Stand.)       o.oii    in    266.4 
Boss                              0.015    'n    297.0 

1911.26             223.32            119.46 

For  the  proper  motion  of  AB.    No  other  measures. 
Auwers         0*074    in    282?4 
Boss              0.038    in    264.0 
Newcomb     0.035    in    261.3 

• 

8015.    2  2167  rej.     (8.  i...  10.  7) 

8065.     54  Ophiuchi.    22184.     (6.  3.  ..11.2) 
R.  A.  17"  28™  51*       Decl.  +  13°  15' 

1912.351              7i?8               21*85 
•389             71-5               21.94 
.408             71.1               21.68 

R.  A  17'  21"  2i'        Decl.  +  49°  38' 

1907.351                  222?8                       l8"24 

8.422          223.1             18.56 
8.425           223  o              ix.r,- 

1912.38               71.5               21.82 

There  appears  to  be  a  slow  decrease  in  the  angle,  the  di 
remaining  constant.    The  proper  motion  of  54  Ophiuchi 
certain  in  amount  and  direction 

1908.07            223.0              18.49 
No  early  measures  of  this  pair. 

Auwers         0*070    in    224^8 
Boss              0.036    in     173.1 

Burnham:   Measures  of  Proper  Motion  Stars 


8067.     S3  Ophiuchi.    2  34,  App.  I.     (5.  6...  7.3) 
R.  A.  17"  28'"  55s        Decl.  +  9°  40' 

A  and  B 
1912.542             I9o?6o              41*27 
.545             190.80              41.18 
.562            190.90              41.40 

No  change  since  1833.     Common  proper  motion.     This  is 
given  from  meridian  observations  : 

A  (v°)        Auwers       o"i59    in    71  ?3 
Boss            0.165    in    72.0 
B  (v1)        Auwers       0.153    in    70.9 
Boss            0.158    in    72.0 

8093.     Sh  251.     (6.  5...  8.5) 
R.  A.  if  33™  5"        Decl.  +  2°  6' 

A  and  C  (10.4) 
1912.526              I7?57             I32"50 
.542              17.58             132.46 
.545              17.27            132.26 

1912.55              190.77              41-28 

No   material   change   since    1835.     The   proper   motion   of 
53  Ophiuchi  is  uncertain,  and  I  have,  therefore,  connected  two 
small  stars. 

A  and  C  (10.6) 
1912.526            344?70              93':95 

B  and  D  (10.6) 
1912.526            223?35              91^40 

Auwers         o"o6i     in    255^8 
Boss              0.017    in    210.6 

8068.     22185.     (7.0...IO.O) 
R.  A.  17"  28""  56'        Decl.  +  6°  6' 

A  and  C  (7.7) 

1909.455            207?7o              83"6s 
.496            207.60              83.75 
.512            207.58              84.10 

1912.53                17-47             132.41 
The  proper  motion  of  the  principal  star  is  : 
Boss       0*047    in     H2?5 

As  there  has  been  no  change  in  AB,  this  is  the  movement  of 
the  other  component.    This  will  be  more  accurately  found  here- 
after from  further  measures  of  the  faint  star. 

8099.    26  Draconis.    $962.     (S.S...IQ.I) 
R.  A.  17"  33™  45'        Decl.  +  61°  58' 

1908.518            35i?5                  i':o6 
•575            353-0                  i.  21 
•597            348.5                  1.16 

1908.56              351.0                  1.14 

1910.164            352?5                  i  "21 
.184            350.5                  1.13 
•452            350-3                  1-39 
.471             352.4                  1.19 
•473            346.8                  1.29 

1909.49              207.63              83.83 

For  an  independent  determination  of  the  motion  of  C,  I  have 
connected  a  10.5  m  star: 

C  and  D 

1909-455             182^30            I4o"73 
.496            182.13             140.68 
.512            182.43             140.60 

1910.34              350.5                  1-24 

The  elements  of  the  orbit  are  as  uncertain  now  as  they  were 
twenty  years  ago,  although  the  described  arc  is  157°. 
The  proper  motion  of  the  binary  system  is  : 
A.  G.  Hels.          o"s83    in     152^7 
Groombridge       0.563    in     155.4 
Porter                   0.569    in     154.2 
Boss                       0.563     in     154.5 

8114.     22194.     (6.  2...  8.  5) 
R.  A.  17"  36™  io'        Decl.  +  24°  34' 

A  and  DM  (24°)  3226  (9.0) 
1909.266             i6i?42             i63''o8 
.304            161.20            164.28 
.340            161.28            163.88 

1909.49              182.29            140.67 

A  and  B  have  a  common  proper  motion  : 
Porter           o"o7O    in    2io?8 
Furner          0.062    in    216.3 

C  has  a  much  larger  motion  : 
Porter           0^578    in    3og?3 
Glasgow        0.617     in     306.0 
Furner          0.632    in    304.7 

8076.     v1,  \"  Draconis.    Z  35,  App.  I.     (4.6..  .4.6) 
R.  A.  17"  29"-  48"        Decl.  +  55°  16' 

1910.397            3ii?88              61^49 
.414            312.26              62.02 
.416            312.00              62.09 
.436            312.35              61.47 

1909.30              161.30            164.05 
From  meridian  positions  : 
1880.4           i6i?3           i62!'9           A.  G.  Ber. 

A  and  B  appear  to  have  the  same  proper  motion. 
A.  G.  Ber.     0*056    in    345?8 
Boss              0.052    in    340.1 

1910.42              312.12              61.77 

15 


221 


Burnham:   Measures  of  Proper  Motion  Stars 


8120.    p  1251.    (6.0... 11.5) 

R.  A.  17*  36™  35'        Ded.  +  i6°  i' 

A  and  C  (12.8) 

1910.280  276! 25  154*86 

•375  276.30  154-90 

.414  276.57  155.45 


1910.36 


276.37 


155-07 


For  the  proper  motion  of  A.    This  from  meridian  observa- 
tions is : 

A.  G.  Ber.     o".\2i    in    35o?4 
Porter  0.115    in    360.0 

Boss  0.096    in    358.3 


8123.    A.  G.  212.     (9.5... 9. 5) 

R.  A.  17"  36"  47'       Decl.  +  5°  23' 


1907-331 
•  351 


27°3 
26.0 


2:28 
2.28 


1907-34 


26.6 


2.28 


8135.    Schj  15.    (7.  i... 8. 2) 
R.  A.  17"  38™  28'       Decl.  — 1°  41' 

A  and  C  (9.5) 
1910.375  I47?5o  139:31 


.414 
•  436 


147.83 
147-75 


139.43 
139-37 


1910.41 


147.69 


139.37 


The  only  other  measures  are  given  in  Part  II  of  the  General 
Catalogue. 


8136.    61  Ophiuchi.    "S.  2202.    (5. 5... 5. 8) 
R.  A.  17"  38™  33'       Decl. +  2°  38' 

A  and  B 
1912.526  02?7S  20:37 


•  542 

•  545 


93.30 
93-43 


20.56 
20.50 


I9I2-53  93.16 

B  and  C  (12.5) 


1912.542 

•545 


28!6o 
27.93 


20.48 

96:03 
95-78 


95-90 


1912.54  28.26 

The  proper  motion  of  A  is  given : 

0^018    in    334?9 
0.014    in    347.9 


Auwers 
Boss 


As  there  has  been  no  change  in  B  for  90  years,  the  proper 
motion  must  be  exactly  the  same.  The  meridian  positions 
give  for  B  : 

Boss        o'ois    in    23  ?2 


8142.     H4977.     (7-6... 9- 5) 
R.  A.  17"  39m  16'       Decl.  — 3°  27' 

AB  and  0(13.7) 
1910.280  143?!  21:76 

21.75 
21.85 


•  375 
.414 


144.4 
142.1 


1910.36  143.2  21.79 

No  other  measures  of  the  Herschel  companion. 

8155.     22211.     (8. 2... 9. 2) 
R.A.  I7"40m27t       Decl.  — 1°  10' 

A  and  B 
1910.280  ii4?9  10^25 


•375 
.414 


115-0 
"5.3 


10.21 
IO.24 


1910.36                    II5.I  10.23 

A  and  C  (9.2) 

1910.280            I97?82  105:52 

•375            197.80  105.23 

.414            197-83  105.50 


1910.36 


197-82 


105.42 


The  only  other  measure  of  C  is  given  in  the  General  Cata- 
logue, 

8169.    H  2810.    (7. 3... 9. 8) 
R.  A.  17*  42™  28'       Decl.  —  19°  58' 


1909.513 
•  515 
•531 


190?! 
189.7 
189.8 


40:92 
40.00 
40.77 


1909.52      189.9      40.86 

H  2810  and  h  1986 

1909-513            27o?4             297':  i 
.531  270.3 297.0 

1909.52  270.3  297.0 

h  1986  and  star  io.7m 
1909.513  30i?7  32:67 

The  star  is  measured  from  the  nucleus  on  the  «/>  side  of 
h  1986.  The  following  is  the  relation  of  the  two  condensations : 

1009.513  H7°7  30:44 

In  the  General  Catalogue  the  nebula  is  erroneously  called 
h  4333 ;  that  is  the  number  in  Herschel's  General  Catalogue  of 
Nebulae. 


8182.    H'  Draconis.    22241.     (4.0. ..5.2) 
R.  A.  17"  44™  5"       Decl.  +  72°  13' 

A  and  B 
1908.370  I5°45  30^54 


.383 
•403 


15.88 
15.43 


30.50 
30.55 


1908.39 


15-59 


30.53 


222 


Burnham:   Measures  of  Proper  Motion  Stars 


A  and  C  (10.5) 
1908.252             I2i?6o              92746 
.288             122.  oo              92.28 
.331             121.27              92.02 

.370                 122.00                   92.55 

A  and  D  (13.2) 
I907-S97            236?o                3o"20 
8.331            235.2                30.83 
8.482            236.3                30.53 

1908.14              235.8                30.52 
The  only  other  measures  are  by  Lewis  in  1905. 

8209.    23128.    (7.0...  10.5) 
R.  A.  17*  46™  28'       Decl.  —  7°  53' 

A  and  C  (12.8) 
1911.449            ioi?oo              92:'37 
.468            101.40              93.02 
.471             102.40              92.28 
.509            101.87              93-o8 

1908.31            121.72           92.33 

The  proper  motion  of  A  as  deduced  from  the  five  measures 
1857-1908)  of  the  small  star  C  should  be  more  accurate  than 
at  from  any  other  data: 
0^283    in     176?  15 

Some  of  the  former  results  from  meridian  positions  are: 
Newcomb            o"z68    in     I78?4 
Greenwich           0.279    m     '77-8 
Boss                     0.267    in     176.9 

I  have  measured  a  small  star  from  C.     When  these  stars 
•e  remeasured  hereafter,  it  is  practically  certain  that  there 
ill  be  no  change. 

C  and  D  (12.0) 
1908.370              19?  13              67^37 
•383              19.05              67.45 
.403              18.75              67.93 

1911.47              101.89              92.69 

For  the  proper  motion  of  AB.    No  material  change  in  tl 
close  pair. 
Paris             0^2  18    in     i8o?o 
Porter           0.234    in     190.2 

8211.    22235.    (7.  5...  9.  i) 
R.  A.  I7"  46™  44'        Decl.  —  2°  14' 

1908.249            I24?o                19*38 
.252            123.7                19-33 
.266            123.3                19.46 

1908.39                18.98              67.58 

8187.     22230.     (8.  2...  8.  7) 
R.  A.  17"  44™  54'       Decl.  +  7°  57' 

A  and  B 
1909.304              84?  38              45?5i 
.378              84.88              45.57 
.512              84.67              45.42 

1908.26              123.7                19.39 
Perhaps  a  little  increase  in  distance. 

8223.    H  1307.     (7.o...ii.o) 
R.  A.  17"  47m  45'       Decl.  +  27°  13' 

1910.225            323^4                33"6o 
.260            322.9                33.15 
-337            323-2                33-68 

1009.40                84.64              45.50 

A  and  C  (10.5) 
1909.304             I09?6o              37770 
.378            109.85              37.43 
.512            109.63              37.66 

1909.40              109.69              37.60 

The  four  positions  by  'S,  A  and  p  (1831-1909)    of  these  stars 
ve  for  the  proper  motion  of  A  : 
AB       R.  A.  —  o'/oi6       Decl.  +  o"oi6 
AC                    0.009                    0.024 

1910.27              323.2                33.48 
Change  in  distance  is  probable. 

8224.    02(App.)i6o.    (8.  2...  8.  6) 
R.  A.  17"  47™  46'       Decl.  +  10°  59' 

1910.263            i9i°45            102^15 
.280            I9I-3S            102.23 
-337            iQi-30            101.94 

—  0.012                        +O.O20 

Therefore  the  proper  motion  of  the  principal  star  is  : 
o"o23    in    329^0 

• 

8197.    22233.    (7-  5...  10.  3) 
R.  A.  17"  45™  52'        Decl.  +  2°  56' 

A  and  C  (13.6) 
1907.597            141?!                22^54 
8.331             140.3                22.79 
8.482            141.3                22.81 

1910.29                    I9L37                 102.  II 

Further  measures   are  necessary  to   confirm   the  apparer 
change.    The  meridian  positions  are  uncertain  in  distance: 
1875           191  ?6           ioi"3           A.  G.  Leip. 
1880           191.4           105.8           Munich 

1908.14              140.9                22.71 

223 


Burnham:   Measures  of  Proper  Motion  Stars 


8245.    Ho  72.    (9.0...  11.  5) 
R.  A.  17"  sim  27"       Decl.  +  33°  27' 

A  and  B 
1907.197                2?7                  8:34 
•  217                2.3                  8.53 

8247.    22251.    (8.  2...  n.  2) 
R.  A.  I7h5im32"        Decl.  +  49°  39' 

1909.266              27?o                I5''io 
.302              28.1                15.22 
.304              26.9                15.12 

•329                3-7                  8-57 

1908.252                      2.2                         8.67 
.288                      3.4                        8.82 
.370                      1.9                        8.98 

.383                3-2                 9-10 
•444                2.3                  9.16 

1909.304                2.0                 9.12 
.342                2.8                  8.85 
•378                3-4                  9-03 
.438                2.5                  9.06 

1910.225                1.5                  9.19 
•337                2.1                  9.39 

1909.29               27.3                15.15 
Possibly  a  little  change  in  distance  and  angle. 

8255.     22253.     (7-  5--.  io.  2) 
R.  A.  17"  52™  55"        Decl.  +  14°  38' 

A  and  B 
1910.280             77?6               i4:'9i 
-356             79-5               M-93 
•375              78.6                14.95 

•  395                2.4                 9.25 
1911.241                2.5                  9.54 
.299                1-5                  9-58 
•337                3-0                 9-60 
•375                3-0                 9-34 

The  several  mean  results  of  the  above  measures  are  : 
1907.25           2?9           8:48           3n 

1910.34                78.6                14.93 
Change  from  proper  motion  of  A. 

A  and  C  (10.3) 
1910.280              63?75              73:61 
.356              63.90              73.78 
•375             63.85             73.43 

1908.35           2.6           8.95            5n 
1909.37           2.7           9.02           4n 
1910.32           2.0           9.28           311 
1911.31            2.5           9.51            4n 

From  positions  by  Ho  (2),  Doo  (2)  and  P  (7),  making  alto- 
gether measures  on  43  n,  we  have  for  the  proper  motion  of  B  : 
0^250    in    359?7 

A  and  C 
1907.351              36°4                9"os 

1910.337              37°7                  9"39 
•397              38.9                 9-01 
.452              36.9                 9.50 

1910.34               63.83             73.61 

The  change  shown  in  the  distance  of  C  is  not  likely  to  be 
real;  the  first  measure  is  only  a  single  night. 

8260.     22252.     (8.0...  8.  3) 
R,  A.  17"  52™  58'        Decl.  +  2°  3' 

A  and  €(8.7) 
1909.227            164^17              04:31 
.304            164.20              94.39 
.378            164.12              94.36 

1910.40                37.8                 9.30 

I9II-337              38?3                  9"  15 
.4"              36.4                 9-07 
.471              37-0                 9-40 

1909.30              164.16              94.35 

There  is  no  indication  of  proper  motion  in  A  or  in  the  com- 
parison star,  DM  (2°)  3444,  from  these  and  the  measures  of 
1800. 

1911.41               37-2                 9-21 

No  change  in  C. 
B  and  C 

1910.337            107?!                 5:51 
•  397            105  -i                 5-48 
.454            107.4                 5-69 

Some  of  the  meridian  positions  give: 
1825           i6i?i           96:6           Weisse 
1850            162.3           92.7           Lament 
1880           164.7           96-5           A.  G.  Alb. 

• 
8268     2  2254     (83     87) 

1910.40             106.5                 5.56 

As  a  further  check  on  this  extraordinary  motion  of  a  very 
small  star,  I  have  connected  with  it  one  still  fainter. 

B  and  D  (12.0) 
1911.487              56?32             I34"i3 

R.  A.  17"  53™  27'        Decl.  +  12°  27' 

A  and  C  (12.8) 

1910.375              66?  17              55:47 
11.302              66.52              55.53 
11.334              66.60              54.95 

•5°9                50.00              134.19 
.526                56.48              I34-I5 

1911.00               66.43              55-32 

I9II.5I                  56-49              I34-I6 

No  other  measures.    A  very  faint  star  near  C. 

224 


Burnham:   Measures  of  Proper  Motion  Stars 


8274.     y  Draconis.     JB  633.     (2. 2...  13.0) 
R.  A.  17"  S31"  49"        Decl.  +  51°  30' 

A  and  B 
1907.465  I5i?78  2o"94 


.485 


151.10 


21.03 


1907.47 


151-44 


20.98 


The  nearest  companion,  B,  appears  to  be  moving  with  the 
bright  star.    The  proper  motion  of  y  Draconis  is  given  in  the 
tar  catalogues  : 

Auwers  (F.  C.)    0*028    in    214^6 
Boss  0.027    in     197-9 

Newcomb  0.025    m     I94-° 

Groombridge       0.021     in    206.2 

A  continuation  of  the  measures  of  the  several  companions 
vill  furnish  an  independent  value. 


1907.351 
.465 

.485 


A  and  E  (11.5) 
234?35 
234.55 
234.50 


97.43 
97.37 


1907.43 


234-47 


97-39 


A  and  G  (11.5) 

1907.351  28!io  I39"3i 

.465  28.00  139-73 

.485  27.91  139.60 


J007-43 


28.00 


139-55 


A  and  F(io.8) 

1907.465  115^82  125^48 

.485  115.68  125.22 


1907.47 


"5-75 


125-35 


8280.    O2  (App.)  161.    (6.  3...  8.  2) 
R.  A.  17"  54™  29"        Decl.  +  8°  52' 


A  and  B 

1911.280  76^75 

.299  76.68 

.302  76.55 


62.20 
61.75 


1911.29  76.66  62.10 

One  of  these  stars  may  have  a  small  proper  motion. 
A  and  C  (10.5) 


1911.299 
.302 


126?  47 
126.32 


114.19 


1911.30 


126.40 


114.24 


8295.    O2  (App.)  163.    (7.0... 7. i) 
R.  A.  17"  55m  22'        Decl.  +  62°  37' 


A  and  B 

1911.258  39? 93 
.260  40.58 
.280  40.65 


1911.27 


40-39 


57"28 
57-57 
57-18 

57-34 


One  of  these  stars  has  a  considerable  proper  motion.  From 
the  four  positions  by  A,  Fr  and  P,  the  apparent  motion  of 
Bis: 

o"i:6    in     I57?4 

To  determine  which  is  the  moving  star,  I  have  measured  a 
third  star. 

B  and  C  (9.8) 

-337  339-22  i83"go 

-353  339-32  183.73 


1911.34 


339-27 


183.81 


8303.    T  Ophiuchi.    22262.     (5.0... 5. 7) 
R.  A.  17"  56'"  33'        Decl.  —  8°  11' 


1907.293 
.482 
-485 


260.0 
260.7 


1-73 
1-93 

2.OI 


1907.42 


260.1 


1.89 


Nothing  can  be  known  of  the  orbit  of  this  binary  before  the 
end  of  this  century,  and  probably  not  then. 
For  the  proper  motion  of  T  Ophiuchi  we  have : 

Auwers         o".O2$    in     io8?6 

Newcomb      0.075    'n     124.1 

Boss  0.045    in     152.5 


8316.     Ho  564.     (7.0...  12. 7) 
R.  A.  17"  57™  37'        Decl.  +  26°  22' 

A  and  B 
1908.331  324°4  3i''23 


.422 

-537 


326.1 
324.2 


3L94 
31-30 


1908.43              324-9  31-49 

The  measures  of  AB  should  be  continued  for  a  final  value  of 
the  proper  motion  of  A. 

Measures      o"747    in  i64?o 

Porter           0.660    in  148.0 

A  and  C  (10.9) 

1908.252              64^50  fe'/So 

.331              64.00  82.70 

.422              64.53  83.13 


1908.33 


64-34 


82.88 


In  the  General  Catalogue,  the  distance  of  AB  by  Doolittle  in 
1902  should  read  27"82  instead  of  24'.'82.  No  other  measures 
of  AC. 

8325.     0  825.     (8. 4... 13.0) 

R.  A.  17"  58™  20'        Decl.  +  25°  22' 

A  and  B 


1910.397 
.414 
1910.41 


193-7 
193.0 


12:34 
12.26 

12.30 


225 


Burnham:   Measures  of  Proper  Motion  Stars 


B  and  C  (8.5) 
ipio.337           233  ?p                9?76 
•397           232.7                 9-64 
.414           231.5                 9.86 

8347.    22777-    (6.  3...  8.  2) 
R.A.  i8"omi'        Decl.  +48"  28' 
A  and  C  (10.0) 

1910.38             232.7                 9.75 

A  and  C  (=  2  2268) 
I9I0.337            2io?o8             2o"88 

1910.225            286^38              88?37 
.244            285.83              88.73 
.260            285.83              89.03 

.414           209.93             20.61 
.436           210.70             20.65 

1910.24              286.01              XX.  7  i 
The  only  other  position  is  that  in  Part  II  of  the  General 

1910.40             210.24             20.71 

A  has  a  small  proper  motion.    The  other  measures  are  given 
in  the  General  Catalogue. 

8340.    7oOphiuchi.    22272.     (4.  i...  6.1) 
R.  A.  17'  59"  23'       Decl.  +  2°  33' 

A  and  B 
1007.291            i6>?7                 2^38 
.293            166.4                2.51 
.348            166.5                 2.77 
.482            165.5                 2.72 

Catalogue. 
A  is  given  a  small  proper  motion  : 

Battermann        o"oi7    in    g6?7 
Further  measures  of  C  will  give  a  new  and  better  value. 

8349.     02(App.)i6s.     (7.4..-7-9) 
R.A.  18"  o™  8'       Decl.  +  4°  33' 

1911.583            141^70             66"i9 
.602            142.43             66.12 
.625            142.10             66.ii 

1907-35              166.5                 2.59 

A  and  a  (12.7) 
1907.293           215^7               46T25 
.312           215.4               46.04 
•331            215.9               45.89 
.348           215.5               46.10 

1911.60             142.08             66.14 
No  change  since  1874. 

8354.     22278.     (6.  8...  7.  3) 

1907.32             215.62             46.07 

A  and  d  (12.2) 
1907.312             35?25            106:39 
•331              34-92            106.37 
•348             35-25            106.60 

R.A.  i8hom47>        Decl.  +  56°  26' 

A  and  D  (9.3) 
1009.148            191°.  30           20  1  "20 
.151            191.10           200.83 
.164            191.20           200.86 

1907-33               35-14            106.45 

From  six  positions  of  these  small  stars  by  HI  and  0  (1878- 
1007)  we  have  for  the  proper  motion  of  70  Ophiuchi: 
Measures  of  Ao        1*065    in    i68?3 
Measures  of  Ad        1.045    m     168.3 

Some  of  the  values  in  the  star  catalogues  are  : 
Auwers          1*126    in     I7o?o 
Boss              1.123    in    169.9 
Newcomb      1.127    in     166.9 

These  measures  are  continued  for  further  improvement  in 
the  value  of  the  proper  motion  of  the  binary  : 

1909.15              191.20           200.96 

This  has  been  measured  : 
1880.58           ig2?02           202756           2n            Bl. 

These  positions  give  for  the  proper  motion  of  A  : 
o"n6    in    252  ?6 

The  measures  should  be  continued  later.     The  comparison 
star  has  a  faint  companion: 

D  and  d  (13.7) 
1909.164           226?2                 5^26 
.186           225.4                 5-02 

A  and  a 
1910.452           218^67             43?68 
.455           218.05             43-74 
•473           217.55             43-80 

1909.17              --5  «                 5.14 
8359.     72  Ophiuchi.    H  5943      (37      ) 

1910.46             218.09             43-74 

A  and  d 
1910.452             34?  15            i09Toi 
•455             34-12            109.12 
•473              33-55             109.06 
•548             34-35            109.26 

R.  A.  18"  i1"  40'       Decl.  +  9°  33' 

A  and  D  (10.8) 
1911.583            i6s?55             54^56 
.625            166.30             54.40 
.644            166.38             54.33 

1910.48             ,:i  "i           109.11 

1911.62              166.08              54.  43 

Burnham:   Measures  of  Proper  Motion  Stars 


The  fi  measures  of  the  faint  star  (1878-1911)  give  for  the 
proper  motion  of  72  Ophiuchi: 
o"op3    in    326^0 

Values  from  meridian  observations  are: 
Boss              o"no    in    323?o 
Auwers         0.116    in    318.3 
Newcomb      o.m     in     322.8 

8381.    S  700.    (7.  7...  9.  6) 
R.A.  i8"3m38'       Decl.  —  16°  47' 

A  and  B 
1910.400           292?!                i8'.'63 
.493            292.1               18.81 
.509           292.6               18.70 

8361.     H  1313.     (9.  3...  11.  6) 
R.A.  i8him42'       Decl.  +  28°42' 

1910.50             292.3               18.71 

A  and  C  (8.0) 
1910.400            353?8                28"8o 
•  493            353-7                28.72 
•  509            353-6                28.56 

1907.482            309?!                14738 
.504            310.0                14.50 
.542            308.9                14.66 

1910.50              353.7                28.69 
These  stars  form  a  part  of  h  1907.    Probably  unchanged. 

1907.51              309.3                14.51 
The  apparent  change  in  the  distance  is  not  likely  to  be  real. 

8369.    HV.  74.    (6.  7...  9.  5) 
R.  A.  18"  2m  17'        Decl.  +  13°  3' 
1911.583            137^23             41^88 

8382.     102  Herculis.    A.  G.  Clark  8.     (5.  5.  ..12.  5) 
R.  A.  18"  3™  38'        Decl.  +  20°  48' 

1911.241             I36?7                23^84 
-302            135-3                23.44 
-334            136.6                23.31 
-395             136.0               23.15 

.625            136.00             42.05 

1911.32              136.1                23.44 

1911.60              I37-OI              42.01 
Unchanged. 

8372.     99  Herculis.    A.  C.  15.     (5.  2...  10.5) 
R.  A.  18"  2171  28'       Decl.  +  30°  33' 

A  and  C  (11.  5) 
1912.296              52?55              93"70 
•3Si              52.90              93.52 
•353              53.26              93.13 

The   four  measures    (1878-1911)    show  no  certain   change. 
The  proper  motion  of  102  Herculis  is  small: 
Auwers         o"ois    in    2i2?g 
Boss              0.017    in     184.7 

8383.     Z  2290.     (8.  5...  10.  8) 
R.  A.  18"  3m  39'        Decl.  +  50°  o' 

A  and  C  (12.3) 
1909.  170              69?so            i77"48 

1912.33                52.90              93.45 

.186              69.68            177-44 
.227              69.62             177-51 

No  other  measures  of  the  faint  star.    The  proper  motion  of 
the  close  pair  is  : 
Auwers         0^135    in    301  °? 
Paris             0.115    in    3i°-5 
Boss              0.113    in    303.7 

8380.     73  Ophiuchi.    22281.     (5.  7...  7.  2) 
R.  A.  18"  3m  36'        Decl.  +  3°  &' 

AB  and  C  (12.6) 
1912.236            191  °45              67"22 
.274            191.00              66.98 
•351             191-43              67.15 

1909.19                69.60            177.48 

The  former  measures  are  somewhat  uncertain  in  distance  : 
1880.32           70?I2            I77"36           in            Bl 
1880.80           70.00           176.25            in           Bl. 

No  material  change  in  AB. 

8384.     22283.     (7.  2...  7.  7) 
R.  A.  i8>  3™  43'        Decl.  +  6°  8' 

1909.515              8o?o                 o':86 
•531              83.0                 0.91 

1912.28              191.29              67.12 

The  proper  motion  of  the  binary  system  is  given  from  merid- 
ian positions: 
Auwers         o"o22    in     H9?5 
Ross                 n  mo     in      rr>7  8 

1909.52               81.5                0.88 

Slow  angular  motion.    The  Herschel  bright  planetary  nebula 
is  about  i°  distant  «/.    The  15  m  star,  near  the  central  star, 
measured  at  Lick  Observatory  in  1891,  was  too  faint  for  good 

mpasnrps  lirrp 

227 


Burnham:   Measures  of  Proper  Motion  Stars 


h  2000  and  star  12.  6m 
1909-512            308?43              89719 
•  SIS            308.70              88.96 
•531            308.37              89.06 

A  and  C  (10.9) 
1908.403             4o?30             7;:'35 
.422             40.22             77.29 
.425             40.02             77.32 

1909.52              308.50              89.07 

8388.     0637-     (6.  5.  ..12.  5) 
R.  A.  18"  3m  54'        Decl.  +  3°  6' 

A  and  C  (10.8) 
1910.490            237^58            104:97 
•493            237-38            104.85 
.509            237.47            104.86 

1908.42               40.18             77.32 

The  prior  measures  of  C  are  discordant  in  distance,  and 
further  observations  are  required. 

1881.29           39°42           77753            m            Bl 
1881.77           40.08           78.47            in            Bl. 

8453.    H  2827.    (9.8...  9.  9) 

1910.50              237.48         «  104.89 

For  the  proper  motion  of  AB. 
Porter           o7i79    in     i8o?o 

R.A.  i8h9m59'       Decl.—  19°  55' 

I909.53I                 254?2                      20704 

•534            253.2                19.82 

Boss              0.185    in     166.0 

8398£.     Ho  267.     (7.0...  13.0) 
R.  A.  18"  4°  53'       Dec!.  —  5°  13' 

1007.312            355?o               14:11 
•  348           355-6               13-94 
•351            355-3                14-00 

I909-53              253.7                19.93 

H  2827  is  in  the  middle  of  h  2002,  which  is  large  and  diffused. 

8471.     H  1317.     (9.8...  11.  9) 
R.  A.  18"  12'"  10"        Decl.  +  27°  20' 

IQO?   5O4                 I28°6                       I7ff76 

1907.34              355-3                14-02 

.523         129.0           17.76 

The  distance  in  the  early  measure  of  Ho  is  apparently  too 
large. 

8404.     22291.     (8.  5...  9.0) 
R.  A.  18"  5™  53'        Decl.  +  34°  o' 

1907.348            339?7                27711 
7-351             339-6                27.17 
8.479            340.0                26.95 

1907.51            128.8             17.76 

This  is  probably  the  pair  measured  by  Miller.    The  other 
pairs  were  not  found  by  sweeping  in  the  immediate  vicinity. 
(See  Part  II  General  Catalogue.) 

8481.     H  5494.     (6.0...  ii.  8) 
R.  A.  18"  13™  20-       Decl.  +  7"  12' 

1907.73              339-8                27-08 

Distance  increasing.     One  of  the  components  has  a  proper 
motion  of  07025  in  339?  (±  180°).     A  third  star  should  be 

1911.241             69^70             39798 
.299             68.60             39.86 
.302             69.82             40.19 

connected. 

8417.    2  2293  rej.     (7.  8...  10.  5) 
R.  A.  18"  6"  46'        Decl.  +  48°  22' 

1907.329             82  ?8               12788 
.348             82.8               12.91 

1911.28               69.37             40.01 

The  other  measures  are  recent.    The  proper  motion  of  A  is  : 
Boss      07063    in    275?5 

8482.     22305.     (8.  2...  9.  8) 

1907.34               82.8               12.90 

The  angle  by  Hu  requires  a  correction  of  180°.     No  early 
measures. 

8440.     22208.     (8.5...  9.  7) 

R.  A.  18"  13-"  24'       Decl.  +  51°  i/ 

A  and  C  (10.6) 
1908.403            I97?22            ioo739 
.422            196.95            100.76 
.425            107.18            100.76 

R.  A.  18"  8"  51'        Decl.  +  41°  21' 

A  and  B 
1908.422            I79?2                 2717 
.425            179-4                2-06 

1908.42              197.12            100.64 

The  only  other  measures  are  : 
1880.58           I97!6o           102702           2n           Bl. 

1908.42             179.3                2.  ii 
Probably  unchanged. 

If  this  distance  was  right,  A  should  have  a  proper  motion 
of  o7os8  in  229?!.    The  measures  should  be  repeated  after  a 
few  years. 

aaB 


Burnham:   Measures  of  Proper  Motion  Stars 


8483.    Schj  16.    (7.  9...  9.  2) 
R.  A.  18"  13™  24"        Dec!.  —  5°  i' 

1911.548            I97?8                 2':78 
.564            200.  i                  2.69 

.567                 200.0                         2.82 

The  measures  of  the  small  star  (1836-1911)  should  give  the 
proper  motion  of  the  large  star  with  the  highest  accuracy.    The 
seven  positions  by  2,  A,  HI  and  p,  from  measures  on  20  n,  give 
the  proper  motion  of  ti  Serpentis: 
o".8&7     in     217?! 

Other  values  are  : 
Auwers         o"go4    in    22O?6 
Newcomb      0.886    in    220.4 
Boss              0.898    in    218.9 

8512.     22311.     (8.  9...  9.  9) 
R.  A.  18"  i6m  38'    Decl.  +  11°  23' 
1911.468            I53?3                  5"i9 

•471                  154-5                         5-12 

-487             153-5                  5-25 

1911.56                    199.3                         2.76 

Change  in  angle. 

8485.     22303.     (6.  7...  9.  2) 
R.  A.  18"  13™  34s        Decl.  —  8°  2' 

1908.594            224?!                  2*76 
.597            227.5                  2.53 
.613            227.8                  2.54 

1908.60              226.5                  2.61 
Perhaps  some  change  in  angle. 

8492.    A.  G.  220.    (9.  i...  9.  2) 
R.  A.  i8"i4nl2is        Decl.  +  51°  o' 

I9H.433            307?7                io"88 
.449            307.0                11.09 
.468            307.2                10.83 

1911.48              153.8                  5.19 

From  the  measures  by  2,  A,  Sp,  Lv  and  (3  on  19  n  (1830- 
1911)  we  have  the  proper  motion  of  A  : 
o"o47    in     I93?3 

A  and  star  9.8m 
1911.487            333°02            I43"°7 
•509            333-17             I42.57 
.526            333-22             142.71 

1911.45              307.3                10.93 

8496.     74  Ophiuchi.    H  5495.     (4-9...H.6) 
R.  A.  18"  14™  S38        Decl.  +  3°  19' 

1911.302            28s?7                27':oo 
.337            286.6                28.06 
.356            286.0                28.17 

1911-51              333-14            142.78 

A  and  DM  (11°)  3438  (9-5) 
1911.487           28g?22            i48'/86 
.509           289.23            148.88 
.526           289.15            149.05 

1911.51             289.20            148.93 

Later  measures   will   give  two   independent  values   of  the 
motion  of  A. 

8574.     39  Draconis.    22323.     (4.  7...  7.  7) 
R.  A.  18"  22m  ios        Decl.  +  58°  44' 

C  and  D  (7.1..  .10.7) 
1910.184              66?57             I98'.'io 
.206              66.33             197-94 
.225              66.48            197-74 

1911.33              286.1                28.04 

A  comparison  of  the  late  positions  with  that  of  1878  indicates 
a  small  proper  motion  principally  in  declination,  instead  of 
R.  A.  as  shown  by  the  meridian  observations,  but  the  early 
position  is  on  a  single  night,  and  therefore  further  measures 
are  needed. 
Auwers         o"oi9    in    264?! 
Boss              0.015    in    258.7 

For  a  further  independent  determination  of  this  motion,  I 
have  measured  a  third  faint  star  : 

A  and  C  (12.0) 
1912.526              8o?oo              s8"37 
.542              79.90              57.85 
.545              80.23              57.75 

1910.20                66.46             197.93 

The  following  is  erroneously  given  as  measured  from  A  : 
1880.03           6s?87           io8':o8           2n           Bl. 

There  are  many  stars  in  the  field  nearer  AB  than  this.    One 
distant  star  was  measured  by  mistake  for  D  : 

A  and  E  (n.o) 
1910.184              8o?so            i5o"32 
.206              80.07             150.74 

1912.53                80.04              57-99 

8498.     11  Scrpentis.    2  8,  App.  I.     (3.  3...  12.0) 
R.  A.  18"  15™  6s        Decl.  —  2°  56' 

1911.302              62?6s             i68"94 
•337              62.70            168.67 
.356              62.50            168.95 
.373              62.48            168.80 

1910.19               80.28            150.53 

The  proper  motion  of  39  Draconis  is  given  : 
Auwers         o"o6s     in    326^5 
Boss              0.064    in    328.7 

1911.34               62.58            168.84 

229 


Burnham:   Measures  of  Proper  Motion  Stars 


8576.    H  1325.    (10.8...  ii.  5) 
R.  A.  18"  22m  16'        Decl.  +  29°  45' 

1907.331            297?o                6"86 
.351            296.5                 6.50 
.425            297.0                6.88 

8614.    p  966.    (6.7...) 
R.  A.  18"  25™  25'        Decl.  —  19°  3' 

P  966  is  the  principal  star  of  the  coarse  cluster,  Messier  25. 
Many  of  these  stars  were  measured  by  Glasenapp,  each  on  2  n, 
and  I  have  remeasured  most  of  them  in  the  hope  of  finding 
some  small  star  with  a  sensible  proper  motion.    As  there  is  no 
indication  of  any  change,  the  measures  were  not   repeated. 
The  results  of  the  comparison  are  as  follows  : 

AH          1890.52           295?66            7i"6s           Gla 
1909.59           295.38            72.27           p 
AE          1890.52           282.02           145.16           Gla 
1009-59          281.68           144.95           P 
EL          1890.52           122.25            21.03           Gla 
1909.59           122.55            21.05           p 
EF          1890.52           290.71             25.06           Gla 
1909.59           291.32            25.23           p 

EK          1890.54            26.44            30.73           Gla 
1909.59            27.68            30.33           P 
CD          1890.50           172.07             11.94           Gla 
1909.59           171.90             11.23           p 
PC          1890.55           263.92            93.59           Gla 
1909.59           263.69            93.67           p 

PQ          1890.54           300.60            68.46           Gla 
1909.59           300.93            68.79           P 

AP          1890.53           194-77           163-58           Gla 
1909.59           194.62           164.23           p 

AR          1890.55            90.49            77.08           Gla 
1909.63            00.43            76.67           P 
HJ           1890.52           310.70            43.47           Gla 
1909-63           310.78            44.27           p 

JM           1890.54           345-57             70.36           Gla 
1909.63           345.32            70.23           p 

The  lettering  as  given  in  Glasenapp  (I)  is  followed  here. 

8615.    22329.    (7.7...  9.0) 
R.  A.  18"  25™  35'       Decl.  +  6°  23' 

1908.597             43°6                4"o6 
.613             44.7                4.20 
•633             45-6                4-25 

1907.37             296.8                 6.75 

Probably  no  motion  ;  but  disagrees  with  Herschel's  estimated 
position  in  1828. 

8578.    <t>  Draconis.    O2  353.    (4.  8...  6.5) 
R.  A.  18*  22™  29"        Decl.  +  71°  16' 

AB  and  C  (12.7) 
1912.296            H4?8s             7o"72 
.312            114.25             70.96 
.351            "5-13             70.66 

1912.32              H4-74              70.78 

No  other  measures.    The  proper  motion  of  the  large  star  has 
been  given  : 
Auwers   (Brad.)       o7o2i    in    3s8?7 
Auwers  (F.  C.)          0.027    »n    319.7 
Boss                           0.032    in    353.1 

8579.    22319.    (7.  2...  7.  6) 
R.  A.  18*  22™  30'       Decl.  +  19°  13' 

A  and  C  (10.0) 
1908.288            274?4                39?6i 
•444            274.5                39-72 
.460           274.4               39-95 

1908.40             274.4               39-76 

The  measures  of  the  small   star   furnish  data  for  a  very 
accurate  value  of  the  proper  motion  of  A.    The  measures  of 
2,  A  and  0  (1829-1908)  give: 
Measures        0^043    in    30^0 
A.  G.  Ber.       0.045    in    51.7 

8595.    22322.     (5.7...".o) 
R.  A.  18"  24"°  8'       Decl.  +  3°  59' 

A  and  C  (12.0) 
1912.526            204?95              66^63 
.542            295.73              66.74 
•545           295-57             67.43 

1908.61               44.6                4.17 
No  change  in  angle  or  distance  since  1830. 

8628.     22333.     (7-5...  8.  i) 
R.  A.  18"  26"  38'       Decl.  +  32°  10' 

A  and  B 
1909.227            333?6                6?22 
-266            333  4                 6.II 

1912.53             295-42             66.93 

A  and  D  (12.1) 
1912.526            I93°75             85747 
•542            193-43             85-21 
•545            I93-48             84.77 

1912.53              193-55             85.15 

The  magnitude  of  the  principal  star  in  DM  is  7.0;  no  proper 
motion  found  in  the  catalogues  examined.    No  sensible  change 
in  AB  since  Struve.    No  other  measures  of  the  distant  stars. 

1909.25              333.5                  6.16 
No  relative  motion. 

230 


Burnham:   Measures  of  Proper  Motion  Stars 


A  and  C 

8646.    O2 

(App.)  171.     (6. 

5-.  -7-4) 

1909.186 

.227 

35°25 
35-05 

i63"97 
163.58 

R.  A.  18"  28™  50'        Decl.  + 

38°  45' 

1909-21 

35.15 

163.77 

A  and  B 

1911.162 

321  ?3O 

143721 

B 

and  C  (12.7) 

.164 

321.20 

143.11 

1909.186 

37°  13 

i6i':i3 

.200 

321.35 

143-73 

.227 
.266 

36-90 
37-35 

161.08 
161  .  10 

I9II.I8 

321.28 

143-35 

1909.23  37.13  161.10 

The  former  measures  of  BC  have  too  large  a  difference  in 
distance  to  use  the  mean  : 

1880.31  37°23  :6o"i6  in  Bl 

1880.75  37-32  161.24  in  Bl. 


8630.    p  642.    (9.0...II.O) 
R.  A.  18"  26""  45'       Decl.  —  10°  32' 


1911.449 
.509 
.526 


88?8 
90.2 
89.8 


3.80 
4.00 


1911.49  89.6 

One  of  the  brighter  stars  in  h  3751. 


3.86 


8636.    O2  355  rej.    (6.  2...  9.  5) 
R.  A.  18"  27m  38"        Decl.  +  8°  1  1' 


1912.564 
.581 
.583 


248^28 
248.65 
248.45 


38"55 
38.26 
38.38 


1912.57 


248.46 


38.40 


There  is  no  certain  change  in  the  place  of  the  companion 
since  1866. 

8643.     2  2340.(8.3...9.2) 

R.  A.  18"  28™  30'        Decl.  +  31°  30' 

B  and  C  (9.4) 


1909.186 

I55°i5 

206^73 

.227 

I55.I8 

206.64 

.266 

155.05 

206.65 

1009.23 

I55.I3 

206.67 

The  previous  position  is  : 
1880.53  i55°47 


Bl. 


The  measures  tend  to  show  that  the  proper  motion  is  in  A, 
the  larger  of  the  two  small  stars.  The  measures  of  AB  make 
the  annual  motion  o"o22  on  the  line  joining  the  stars. 

8644.    H  1329.    (8.  9...  13.  6) 
R.  A.  18"  28™  32'       Decl.  +  11°  i/ 


The  four  positions  by  A,  Fr  and  P  give  for  the  apparent 
motion  of  A: 

o"iso    in    2i5?7 

To  show  whether  or  not  there  is  any  motion  in  B,  I  have 
connected  a  faint  star: 

A  and  a  (10.7) 

1911.162  I38?6o  85*90 

.200  138.68  85.95 


1911.18 


138.64 


85.92 


The  proper  motions  from  the  Paris  catalogue  are: 

A        o"o82    in    I54?6 
B         0.150    in      90.0 


8650.     O~S3s6rej.     (7.0.  ..8.  7) 
R.  A.  18"  29™  20'       Decl.  +  40°  4' 

A  and  B 
1910.280  305?45  34"96~ 


•  299 
-375 

305.88 
305-75 

35-33 
35-44 

1910.32 

305-69 

35-24 

1910.280 
•299 
•375 

A  and  C  (9.5) 
4°8S 
4.38 
4-53 

52?o6 
51.67 
51-88 

1910.32 

4-59 

51.87 

B  and  C 

1910.280 
.299 
•375 

46?77 
46.38 
46.48 

45-52 

45-22 

45-33 

1910.32 


46.54 


45.36 


1910.299 
•395 


3i6?8 
317-7 


15-96 


I9I0.35  317-2  15- 

No  other  measures.    H's  angle  is  328°. 


As  there  is  no  change  in  BC  since  1866,  it  is  obvious  the 
motion  is  in  the  principal  star.  From  the  measures  of  A  and  p 
the  proper  motion  of  A  is : 

AB       R.  A.  —  o"oso       Decl.  +  o"osi 
AC  0.038  0.041 


—  0.044 

Therefore  the  proper  motion  of  A  is  : 
oro63    in    3i6?2 


+0.046 


AC  and  BC  are  transposed  in  Part  II  of  the  General  Cola 
logue;  and  so  in  A,  Hu,  and  others. 


231 


Burnham:   Measures  of  Proper  Motion  Stars 


8654.    22342.    (5.7...  12.  5) 
R.  A.  I8h29m4i>        Decl.  +  4°  50' 

A  and  C  (8.5) 

1910.531                6?45              29?54 
.548                6.53              29-90 
•551                6.98              29.53 

8699.     2  2350  rej.     (6.7...II.O) 
R.A.  18"  33"  30"        Decl.  —  7°  54' 

1907.293             I95?7                22"o4 
.348            196.2                22.33 
•351             196.2                21.76 

19Q7-33              196.0                22.04 
Change  in  distance  is  probable. 

8702.     H  1332.     (7.  8...  9.2) 
R.  A.  18"  33"'  47'        Decl.  +  24°  33' 

1910.493            229?s                26:34 
.509            229.2                26.15 
.548            228.9                26.24 

1910.54                 6.65              29.66 

The  large  star  not  given  in  Boss  (G.  C.).    From  the  measures 
of  AC  it  has  a  proper  motion  of  o'/os  in  144°. 

8660.     22345.     (8.4...  10.  i  ) 
R.  A.  18"  30™  23'       Decl.  +  20°  59' 

1911.241            2o6?4                 8!'76 
.260            207.2                 8.89 
.280            205.8                8.78 

1910.52              229.2                26.24 
There  may  be  a  little  change. 

8707.    ^  2355  rej.     (7-0.  .  .10.2) 
R.A.  iS"  34™  3'       Decl.  +  7°  1  5' 

1911.241             138^07              25^04 
.260            137-63              24.91 
.299            137-68              24.92 

1911.26             206.5                 8.81 

The  measures  of  2,  A,  En,  HI  and  0  on  23n  (1832-1911)  give 
the  proper  motion  of  A  : 
o'.'o43    in    8o?2 

8664.    H  864.    (7.0...  12.0) 
R.  A.  18"  30m  34'        Decl.  +  4°  52' 

1910.493            322?2                i8''32 
.509           324-9               J8.26 
.531            322.0               18.30 

1911.27              137.79              24.96 

8725.    2  Aquiloe.    H  V.  36.    (s.5...io.o) 
R.  A.  18"  35™  42'       Decl.  —  9°  io' 

1912.465            I30?o6             52"48 
.504            130.30             52.68 
.507            130.07             52.46 

1910.51             323-0               18.29 
Slow  motion  in  angle. 

8685.    Arg.  22.    (8.0...  8.  5) 
R.  A.  18"  32m  28'        Decl.  —  25°  37' 

A  and  C  (8.4) 
1911.564            28s?47              53"30 
.583            285.68              52.72 

1912.49             130.14             52-Si 

The  measures   of   the   small   star  (1879-1912)  show   that   2 
Aquilae  has  no  sensible  proper  motion;  and  this  is  equally 
obvious  from  the  meridian  positions  : 
Auwers         o"oo8    in    3io?2 
Boss              0.014    in     106.7 

8732.     22368.     (7-2...  7-  4) 
R.A.i8"36m7'       Decl.  +  52°  14' 
A  and  B 
7907.271             326?7                  ""SO 
.329            327.9                  J-62 

1911.57              285.57              53-01 

It  is  certain  that  there  is  a  large  error  in  the  Washington 
measure  of  1862.    There  is  probably  no  change. 

8689.     22352.     (7.3.  ..io.  3) 
R.A.  I8»32m39'        Decl.  +  34°  46' 

A  and  C  (10.2) 
1909.186            i6i?os            209*96 
.266            161.35            210.  01 
.304            161.33            210.32 

1909.25              161.24           210.  io 

No  evidence  of  proper  motion. 
1880.31            i6i?35           209^75            in            Bl 
l88l.7S            161.25           210.70            in            Bl. 

1907-30              327-3                  1.56 

232 


Burnham:   Measures  of  Proper  Motion  Stars 


A  and  C  (n.o) 
1907.291             124?  5                36^74 
.312            124.6                36.52 
•329            124.9                36.48 

8759.     22384.     (8.0...  8.5) 
R.  A.  18"  38'"  33s        Decl.  +  67°  o' 

AB  and  C  (12.4) 
I9I0.375             i66?70            H3"55 
.397             167.18            113-35 

1907.31              124.7                36.58 

1908.370            I24?98              36"84 
.460            124.33              36.63 
.463            125.18              36.69 

1910.39              166.94            113-45 

For  the  proper  motion  of  AB. 
Porter           0^233    in    324?8 
Schroeter      0.243    in    327.4 

AB  and  Dreyer  6677 
1910.40           AR.  A.  4m5s;o           ADecl.  89':8 

Discovered  by  Swift.    From  this  the  position  (1860)  is: 
R.  A.  18"  33™  37"        Decl.  +  67°  o'  54" 

There  is  another   faint,   diffused  nebula  in   the  field  with 
12.  5m  star  attached. 

Dreyer  6677  and  nebula 
1910.307             157?!               11^:76 

8761.     22374.     (8.  8...  9.  2) 
R.  A.  i8"38m4is        Decl.  +  27°  36' 

A  and  B 
1910.244              37°9                J4-'64 
.260              37.7                14.56 
.397              38.5                14-66 

1908.43              124.83              36.72 

Evidently  a  large  error  in  the  first  measure  of  this  in  1887  by 
Tarrant.    Probably  fixed. 

8733.     Hd  Zones.     (9.3...ii.o) 
R.  A.  18"  36m  i8s        Decl.  +  o°  33' 

1907.523             m°i                1  1  "72 
.540            109.2                11.82 
.581             108.4                11.76 

1007.55              109-6                11.77 
Disagrees  with  the  Cincinnati  measures  of  1879. 

8736.     22367.     (7.0...  7.  5) 
R.  A.  18"  36™  39'        Decl.  +  30°  1  1' 

AB  and  E  (ii.o) 
1909.340            341  °32             149"  '9 
.342            341.32             148.83 
.438            340.93             148.88 

1910.30                38.0                14.62 

A  and  DM  (27°)  3088  (9.0) 
1910.244            358?58            150^38 
.260            358.17             149.68 
•397            358.20            150.37 

1909.37              34LI9            148.97 

The  prior  measures  are  discordant  and  uncertain  in  distance. 
1880.30           341^83            iso"82            in            Bl 
1880.75           341  -!3            148.67            in            Bl. 

8748.    22372.    (6.7...  8.  2) 
R.  A.  18"  37™  48'        Decl.  +  34°  38' 

B  and  C  (11.3) 
1909.186              6s?25              9i''o3 
.266              65.05              90.86 
.304              65.13              91.26 

1910.30              358.32             150.14 
Change  doubtful  in  both. 
1875           358?6           I5o"9           A.  G.  Camb. 

8765.    22378.    (8.  2...  9.  5) 
R.  A.  18"  39™  5s        Decl.  +  35°  26' 

B  and  C  (10.8) 
1910.225            247?27            2oi"86 
.244           247.15           201.27 
.260           247.03            201.42 

1909.25                65.14              91.05 

Probably  without  change. 
1879.99           64?  99           90?  74           2n            Bl. 

8757.     H  5501.     (9.  i...  10.  9) 
R.A.  i8h38'"25'        Decl.  —  i  °  8' 

1007.523                7?7                23^23 
•540                7.4                23.14 
•581                7-1                23.39 

1910.24             247.15            201.52 

Evidently  B  has  no  sensible  proper  motion  : 
1880.60           247?33           201:25           2n            Bl. 

8767.    22376.    (7.  7...  8.  4) 
R.  A.  18"  39m  6s        Decl.  +  30°  17' 

A  and  B 
1909.186              63?3                22^23 
.266              63.8                22.11 
.304              63.9                21.08 

1007.55                  7-4                23.25 
No  sensible  change.    This  is  DM  (  —  1°)  3556. 

1909.25                63.7                22.ii 

233 


Burnham:   Measures  of  Proper  Motion  Stars 


A  and  C  (10.8) 
1909.186           207?20             8i76i 
.266           207.05             81.61 
.304           207.33             81.37 

8798.    22398.    (8.  2...  8.  7) 
R.  A.  18"  4im  34'        Decl.  +  59°  25' 

A  and  B 
1907.312             isi?7                17709 
.329            151-8                17-19 
.348            I5I-7               I7-II 

1909.25             207.19             81.53 

The  measures  furnish  no  evidence  of  any  proper  motion  in 
22376: 
1880.53           207?6i            8:730           2n            Bl. 

8779.    5  Aquilae.    22379.    (S-6...7.4) 
R.A.  18"  40"  17'       Decl.—  i°  5' 

A  and  C  (11.2) 
1912.430            147?!               26763 
.465            H6.5               25.93 
.504            145-6               26.45 
.507            145.8               26.45 

I907-33             I5I-7               17-13 

1909.170            151^8                17713 
.266            152.0                17.13 
.304            151.6                17.05 
.342            151.9                17.11 

1909.27              151.8                17.10 
The  change  in  B  is  very  slow  at  this  time. 

A  and  C  (u.o) 
1907.312           235?6               50771 
.329           234.9               50.90 
-348           235.8               50.55 

1912.48             146.3               26.34 

A  and  B  have  a  small  common  proper  motion.    The  measures 
of   the    faint   star  (1880-1912)  show   that   this    is   not   all    in 
declination  as  would  appear  from  the  meridian  positions. 
Measures  of  AC        07038    in     I28?5 
Auwers                      0.034    in    192.8 
Boss                           0.031    in    194.0 

8781.    46  Draconis.    H  VI.  37.     (5.1...  10.7) 
R.  A.  18"  40™  18'       Decl.  +  55°  25' 

1910.203            i59°75            I46"95 
.206            160.10            146.32 
•225            I59-83            146.34 

1907.33             235.4               50.72 

1909.170            23i?07              50^74 
.266            231.25              50.64 
.304            230.50              50.89 
.342            230.28              50.79 

1909.27              230.78              50.76 

The  measures  of  C  are  continued  for  improving  the  proper 
motion  of  A.    The  change  in  AC  is  principally  in  angle. 

Stumpe          27303    in    325°4 
Porter           2.286    in    324.5 
Kustner        2.289    in    325.4 
Krueger       2.299    >n    325.6 

The  principal  star  is  given  a  parallax  of  about  0^3. 

8810.    22391-    (6.  2...  9.0) 
R.  A.  18"  42™  14'       Decl.  —  6°  8* 

1907.523            332?3               37^94 
•  540           332.5               37-90 
.581            332-7               38.i8 

1910.21              I59-89            146.54 

The  meridian  observations  show  no  certain  proper  motion  in 
46  Draconis;  and  the  measures  of  the  io.7m  star  give  the 
same  result: 
1879.98           i6o?43           146776           2n           BI. 

Auwers                0^041    in    295?7 
Boss                     0.023    in    344.9 
Groombridge       0.026    in    342.9 

8792.    2  2393.    (7.3...io.o) 
R.A.  \&4im6'       Decl.  +  38°  u' 

A  and  C  (n.o) 
1910.225           300?03            179*02 
.244           300.19            178.88 
.260           299.03            I79-I3 

1907.55             332-5               38.01 
No  change.    There  is  a  13  -5m  star  near  B,  IO7?4:I276. 

8822.    22397.    (7.  2...  9.  5) 
R.  A.  18"  42m  39'        Decl.  +  31°  16' 

1907.542           266?6                3"98 
8.520           267.7                 3-94 
8.537           267.7                4-25 

1910.24             300.05            179.01 

An  earlier  position  is: 
1880.58          299°69           J787  18           2n           Bl. 

If  the  measures  are  substantially  correct,  the  Greenwich 
proper  motion  of  A  is  in  error,  at  least  as  to  direction.     Ac- 
cording to  that,  the  distance  of  the  small  star  should  decrease 
something  more  than  i"  in  the  interval. 
Greenwich      0^038    in    277?5 

1908.20             267.3                4-o6 
No  motion. 

234 


Burnham:   Measures  of  Proper  Motion  Stars 


8824.    22396.    (7.7.  ..ii.  2) 
R.  A.  18"  42™  49'        Dec!.  +  10°  38' 

A  and  C  (10.2) 
1910.299              ii?6a            i6o"i4 
•  375              "-SO            160.34 
•395              ii.iS             159-54 

8871.     H  870.     (9.  7...  10.6) 
R.  A.  18"  45™  54'        Decl.  +  10°  12' 

A  and  B 

1910.375            219^0               ii?3i 
.452           220.  o               11.56 

1910.41              219.5                H-43 

C  and  D 
1910.452              23?7                22"io 
•  455             24.4               22.14 

1910.36               11.42            160.01 

A  and  D  (10.5) 
1910.299              47?95             176*44 
•375              47-53            176.56 
•395              47-42            176.54 

1910.45                      24.0                      22.12 

A  and  C 
1910.452            248?93              6s"94 
.455            248.95              65.95 

1910.36                47.63             176.51 

The  prior  measures  give  : 
AC        1891.71            I3?i8            I53"i6           2n           Eng 
AD        1891.72           50.31            173.53           2n            Eng. 

These  measures  give  for  the  movement  of  the  large  star 
AC       R.  A.  +  0^176       Decl.  —  0^409 
AD                    0.168                    0.437 

1910.45              248.94              65.94 
The  components  of  H  870  form  a  part  of  h  2020. 

8894.    O2(App.)i76.    (7.0.  ..7.1) 
R.  A.  18"  48m  27"        Decl.  +  I  °  45' 

1911.411             H5°23              o6''5i 
.414            115-03              96-51 
.430            114.88              96.87 

+  0.172                —0.423 

Therefore  the  proper  motion  of  A  is  : 
0*457    in     157^9 

Of  course  this  is  substantially  the  same  as  that  given  in 
the  General  Catalogue  from  the  measures  of  AB. 
Measures  (AB)          0^463    in     164^8 
Argelander                 0.468    in     165.2 
Stumpe                        0.448    in     164.9 
Porter                         0.451     in    162.7 
Paris                             0.487    in     157.4 

8827,    HVI.  50.     (6.  4...  12.  5) 
R.  A.  18*43'"  15s        Decl.—  6°  3' 

A  and  B 
1912.564            357?9                23?  19 
•58i             359-4                23.70 
•583            359-8                23.15 

1911.42              US-OS              96.63 

One  of  these  nearly  equal  stars  has  a  small  proper  motion. 
A  third  star  should  be  connected. 

8902.    22416.    (8.0...  10.  2) 
R.  A.  18"  49m  15*       Decl.  +  51°  11' 

A  and  B 
1907.312            I57?8               17:34 
.329            157-8               17-38 
.348            157-8               17-40 

1007.33              157-8               17-37 

1909.186            I57?2                I7"29 
•227             157-5                17-42 
.266            157.4                17-22 

1912.57              359-0                23.35 

A  and  C  (8.0) 
1912.564            I7o?58             ii3"54 
.581             171-03             113-38 
.583             170.88            113.62 

1909.23              157.4                I7.3I 

The  measures  by  2,  A  and  fj  (1830-1909)  give  for  the  proper 
motion  of  A: 
o"o22    in    342?3 

A  and  DM  (51°)  2446 
1907.329              40^65             I25"4i 
.348              40.50            125.40 

1912.57              170.83            113-51 

Probably  unchanged  since  1879.    No  proper  motion  found  for 
the  bright  star. 

8863.    H  1352.    (7.2...  9.5) 
R.  A.  18"  45m  24"        Decl.  +  29°  40' 

1909.340            246?!                12^03 
.342            246.2                12.06 

.438                 246.7                      12.22 

I907-34                40-57            125-40 

1909.186              40?6o            125*39 
.227              40.45             125.03 
.266              40.78            123.17 

1909.23                40.61             125.20 

The  relation  of  these  stars  in  A.  G.  Harvard  is: 
1882       4o?9        I27"2 

1909.37                    246.3                       12.10 

The  angle  is  certainly  increasing. 

235 


Burnham:   Measures  of  Proper  Motion  Stars 


8906.     o  Draconis.    22420.     (4.  6...  7.  6) 
R.  A.  18"  49"  25'        Decl.  +  59°  14' 
B  and  C  (11.3) 

A  and  C  (13.0) 
1907.348              39?8                23749 
7.465              40.2                23.68 
8.520              39.1                23.69 

1910.184           326^82            io6"oo 
.203           326-9S            106.52 
.206            327.17            106.24 

I907-78                39-7                23-62 
The  large  star  has  no  certain  proper  motion  : 

1910.20             326.98            106.25 

The  other  measures  are  : 
1880.37           327°°3            107^80           2n            Bl. 

Noted  by  Ball  as  difficult  to  measure.    The  apparent  change 
in  distance  does  not  agree  with  the  proper  motion  of  A,  and 
further  measures  should  be  made. 
Measures  (AB)           o"oo9    in    84?! 
Auwers                         0.080    in    77.0 
Boss                              0.086    in    74.5 

Boss     o7oo7    in     189?! 

8926.     P  1255.     (5.  8...  12.  5) 
R.  A.  18"  51"'  37'       Decl.  +  48°  43' 

A  and  C  (13.0) 
1911.414            249?2                34^60 
.433            249.9               34-68 
.449            249.7                34-90 

8916.    02525.    (5.  i...  10.  3) 
R.  A.  18"  50™  28'        Decl.  +  33°  49' 

C  and  D  (7.1...  10.7) 
1910.184           284^57            192766 
.206           284.20            192.76 
.225            284.60            192.69 

1911.43              249.6                34.73 

For  the  proper  motion  of  AB. 
Paris             o"i73    in     I9i?8 
Boss              0.143    in    203.7 

8929.     H  5505.     (10.5...  10.  5) 
R.  A.  i8h5i'"56>        Decl.  +  9°  33' 
1910  493            144°  i                 iS"()/i 

1910.20             284.46            192.70 

Many  stars  nearer  to  AB  than  this.    No  evidence  of  proper 
motion  : 
1880.00           284?92            I937i9           2n            Bl. 

10.512            143.6                18.80 
10.531             143-4                18.80 
10.545             144-2                19-04 
11.356            143.9                19-02 

The  proper  motion  of  the  bright  star  (Bradley  2381)  is  small 
and  doubtful: 
Auwers         o7o75    in    z66?9 
Boss              o.on     in    308.8 

8917.    2  2418  rej.     (8.4.  .  .10.9) 
R.  A.  18"  50™  31'       Decl.  +  26°  52' 

1907.348               7?7               i67o2 
.Til               8.0               i<;  oo 

1910.72              143.8                18.92 
No  other  measures. 

8932.     23130.     (7.4...  ii.  i) 
R.  A.  18"  52"  20'        Decl.  +  44°  4' 

A  and  D  (10.6) 
1008.460           311^30            180797 
.463            311.40            180.90 
.479           311.23            181.29 

•425               7-4               iS-94 

1908.47             3".3i            181.05 

1907-37                 77               15-08 
No  early  measures. 

8923.     Ho  270.     (5.  6...  14.  5) 
R.  A.  18"  51"  i"       Decl.  +  41°  27' 

A  and  B 
1907.465            3o6?o                8^31 
8.520           306.7                8.48 

The  large  star  appears  to  have  no  sensible  proper  motion  : 
1880.58           3ii?6s           181726           2n           Bl. 

8940.     n  Aquilae.    22424.    (5.  7...  9.  2) 
R.  A.  18'  53m  34*        Decl.  +  13°  28* 

A  and  B 
1911.411            268?9               16777 
.430           268.6               16.85 
.449           269.3               16.69 

1907.99             306.3                8.39 

1911.43              268.9                ""'  -77 

236 


Burnham:   Measures  of  Proper  Motion  Stars 


From  six  positions  by  2,  A,  H2,  Hu  and  ft  on  21  n  (1831- 
1911)  the  corrected  proper  motion  of  n  Aquilae  is: 
o''li;     in    20<\°.$ 

There  is  no  probability  of  any  sensible  motion  in  the  small 
star. 
Auwers         o"ii5    in     igo°2 
Bossert         o.m     in     187.6 
Paris              0.117     in     180.0 
Boss              0.120    in     179.3 

This  will  be  shown  by  later  measures  of  the  third  star: 

A  and  C  (12.7) 
1911.411            26i°.g6             78^63 
.430           262.68             78.79 
.449           262.25             77-96 

8977.    22440.    (6.  5...  9.0) 
R.  A.  iS"  56™  5'       Decl.  +  62°  14' 

A  and  B 
1908.441            I24?o               I7"oi 
.463            123.3               17-16 
.479            123.3               17.30 

1908.46              123.5               i7-i6 

A  and  C  (10.6) 
1908.441             6i?28            i6o"o3 
.463             61.10            160.29 
.479             61.43            160.42 

1908.46               61.27            160.25 

The  only  other  position  of  the  distant  star  is: 
1880.86           6i?8o           I59"78           3n           Bl. 

AB  seem  to  make  a  system  of  the  61  Cygni  type.    The  proper 
motion  of  A  from  the  measures  of  C,  and  from  meridian 
positions  is  : 
Measures  of  C      o''o57    in     i6c)?3 
Groombridge           0.057    m     165.0 

The  relative  motion  of  B  from  the  measures  of  AB  by  2,  A 
and  fj  (1832-1908)  is: 
0*007    in     I26?o 

8986.     22434.     (7-9--.  8.  4) 
R.  A.  18"  s6m  34"       Decl.  —  o°  53' 

B  and  C  (10.3) 
1910.452             53?6                 1^40 
-490              53-7                  1-24 

1911.43             262.30             78.46 

8943.    22427.    (8.  5...  9-0) 
R.  A.  18"  53™  57s        Decl.  +  38°  4' 

A  and  B 
1911.414              6i?68              49-'o9 
.433              61.62              49.06 
.449              61.40              49.18 

1911.43                61.57              49." 

From  the  measures  by  2,  A,  Sp  and  p1  on  14  n  (1828-1911) 
the  apparent  proper  motion  of  A  is  : 
o''o63    in    222?  5 

The  measures  of  BC  show  that  B  has  no  proper  motion. 

A  and  DM  (38°)  3373 
1911.414            35o?5°            I59"44 
•433            350.42             159-34 
-449            350.72             159-50 

1910.47                53.6                  1.32 

About  15'  n  of  this  is  one  of  the  planetary  or  stellar  nebulae 
(Dreyer  6741).     This  is  given  in  the  DM  as  the  9.  5m  star 

1911.43              350.55             159-43 

The  last  comparison  star,  6.2m,   is  supposed  to  have  no 
sensible  proper  motion  : 
Boss        o"oo3    in     113° 

8976.     H  2849.     (9.  2...  9.  4) 
R.  A.  18"  56™  3"        Decl.  —  15°  56' 

1911.583             I42?5                I9"95 
.602            144.0                20.23 
.625             142.3                20.07 

Nebula  and  star  12.  5m 
1910.452            327°4                33-67 
-455            328.4                33-88 

1910.45              327.9                33.77 

Nebula  and  star  13.6  m 
1910.452            268?4                i8'/3o 
.490            272.5                18.22 

1910.47              270.4                18.26 

About  y2°  np  ^  2434  is  DM  (—0°)  3626  (7-4™)  which  is  the 
principal  star  of  h  2025.    This  star  has  two  small  companions, 
and  many  more  distant  in  the  field. 

A  and  B  (13.9) 
1910.452                2?4                  9^72 

.  490                      2.2                         9  .  62 

1911.60              142.9                20.08 

Apparently   unchanged.     The   9m    star,    SD  (15°)  5192,    is 
28*  p,  and  a  similar  pair  : 

A  and  B  (9.5.  .  .12.8) 
1911.564            138?!                I2!'32 
-625             135.7                12.26 

1910.47                        2.3                        9.67 

A  and  C  (13.0) 
1910.452            304?5                23707 
-455            305.0                23.37 

1911.59              136.9                12.29 

1910.45              304-7                23-22 

16 


237 


Burnham:  Measures  of  Proper  Motion  Stars 


8999.    i6Lyrae.    H  1362.    (6.0.  ..11.5) 
R.  A.  I8"  58™  3'       Decl.  +  46°  46' 


1909.266 
.304 
.340 


279^78 
279.23 
279.00 


43:03 
42.96 
42.80 


1009.30 


279.34 


42-93 


The  proper  motion  of  16  Lyrae  from  my  measures  (1879- 
1909)  is  : 

Measures  o7o77    in    164?! 

Groombridge       0.097    in    163.9 
Boss  0.091    in    167.6 


9000.    22441.    (7-7...  9-3) 
R.  A.  18"  58"  7'       Decl.  +  31°  13' 

A  and  C  (10.7) 

96753 


1908.444 
.460 
.479 


I40?97 
141.45 
141-23 


96.20 
96.59 


1908.46 


141.22 


96.44 


If  there  is  any  proper  motion  in  2  2441,  it  is  evidently  very 
small: 


1880.54 


141*24 


o6fio 


2n 


Bl. 


9015.    2  2445. 
R.  A.  18"  59"  35'       Decl.  +  23°  9' 

Lalande  35667  is  56"  directly  />  2  2445,  and  has  a  distant  com- 
panion measured  by  Glaisher  in  1842  at  Cambridge,  and  re- 
cently published. 

A  and  B  (8.0...  10.8) 
1910.184        '   321  ?44  39745 

.260  321.60  39.22 

.280  321.85  39.12 


321.63 


39.26 


1910.24 

The  early  position  is: 

1842.67  32o?s  40745  2n  Glaisher. 

The  principal  star  probably  has  a  small  proper  motion. 


9020.     £  Aquilae.    0  287.     (3.0...  12.0) 
R.A.  i8*59m54<       Decl.  +  13°  41' 

A  and  C(n.8) 

76?43  158786 

158.52 
158.50 


1909.340 
.378 
•381 


76.88 
76.73 


1909.37 


76.68 


158.63 


Further  measures  are  needed,  as  the  first  is  on  a  single  night : 
I879-34  76?9  15676s  in  0 


Meridian  values  of  the  proper  motion  of  £  Aquilae  are  : 
Auwers         orog6    in     I96?7 
Newcomb     o.ioo    in    186.6 
Boss  0.102    in    184.9 


9043.    22455-     (7-2...  8.  3) 

R.  A.  19"  i™  47'       Decl.  +  21°  59' 

A  and  C  (12.0) 


I9II.28O 
.299 
.334 


22?25 
22.02 
22.19 


92765 
91.98 
92-74 


I9II.3O 


22.15 


92.46 


It  is  very  probable  that  the  change  in  AB  is  wholly  due  to  the 
proper  motion  of  the  larger  star,  but  as  the  companion  is 
8.3m,  it  might  have  a  small  movement  of  its  own.  To  test 
this,  a  faint  star  is  connected. 

Measures  of  AB      07064    in    185^5 
A.  G.  Berlin  0.073    in    214.8 


9046.    22458.    (8.  5...  9.0) 
R.  A.  19"  2m  4'        Decl.  +  27°  34' 

A  and  B 
1911.280  227?2  n72i 


.299 

.356 


226.7 
228.3 


"-SO 
11.41 


1911.31 


227.4 


11.37 


A  and  DM  (27°)  3248  (8.6) 
1911.280  63?03  7o766 

•299  63.38  69.97 

.356  62.67  69.95 


1911.31 


63.03 


From  meridian  positions  : 

1875     63?8    7if8 


70.19 
A.  G.  Camb. 


9049.    22459.    (8.  4...  9.1) 
R.  A.  19"  2™  28'        Decl.  +  25°  47' 


1911.184 
-280 
•334 


232?9 
233.4 
233-4 


13769 
13-77 
13-74 


1911.27 
No  change  in  80  years. 


233.2 


13.73 


9053.    i?  Lyrae.     (s.3...n.o) 
R.  A.  I9*2mss'       Decl. +  32°  19' 

A  small  star  of  about  the  eleventh  magnitude,  in  the  field 
with  17  Lyrae,  has  a  remarkable  proper  motion,  perhaps  the 


238 


. 


Burnham:   Measures  of  Proper  Motion  Stars 


largest  known  in  any  star 

as  faint  as  this.    My  later  measures 

A  and  E 

of  this  are  as  follows  :  • 

1906 

.906            n6?s 

150793 

A  and  C 

6 

.904            116.6 

150.77 

1905.717 
5-720 

66?4 
66.4 

127737 
127-73 

7.258            116.9 
7.271            116.7 

150.86 
150.85 

5.736 

66.5 

127.66 

1908 

.460            n6?47 

150788 

1906.906 
6.964 

7.258 

66.1 
66.1 
66.1 

129-53 
129.46 
130.01 

.479            116.66 
.482            116.50 
.518            116.20 

150.91 
151.19 
150.65 

7.271 

66.2 

130.14 

1910 

.299            116.52 

150.52 

7.291 
' 

66.3 

130.38 

.356            116.65 

150.44 

•375            "6.33 

150.58 

1908.444 

65-45 

132.12 

•395            n6.35 

151.40 

.460 

65-53 

131-92 

•  479 

65.69 

131.79 

AandF 

.482 

65.54 

132.17 

1906.906           356?7             167754 

.518 

65-30 

132.05 

6 

.964           356.8 

167.47 

7 

.271            357-2 

167.71 

„ 
1910.260 

65.08 

I34.I7, 

•  299 

65-35 

134.76 

The   following 

are  the  mean  results 

of  these 

and  other 

•  337 

65-I5 

134-16 

measures  : 

.356 

65.20 

I34.70 

A  and  D 

•  395 

64.98 

134.82 

1887.73 

2g6?40           124734 

2n 

Eng 

1911.241 
.260 
.280 

65.03 
64.88 
65.28 

135.70 
135-63 
135-39 

1894.85 
1905.72 
1907.14 

296.00           125.32 
295.70           126.12 
295.56           126.40 

2n 
in 
5n 

Eng 
P 
P 

•  334 

65.10 

135-85 

A  and  E 

1912.236 
•255 
.274 
.296 

64.88 
64.45 
64.55 
64.55 

137.56 
136.77 
137-54 
137-80 

1887.81 
1894-85 
1905.72 
1907.10 

ii6?oo           152765 
116.37           152.20 
116.50           150.75 
116.67           150.85 

in 
in 

5n 

Eng 
Eng 
P 
P 

A  and  F 

For  other  measures  of 

this  remarkable  star  see  Monthly 

1887.73 

357?77           168720 

2n 

Eng 

Notices  71,  208. 

1894.85 

357.50           i68.ii 

2n 

Eng 

The  following  are  the  mean  results 

of  all  the  measures  of 

1007.05 

356.90           167.57 

3n 

P 

72?02 

102728 

in 

Eng 

69.23 

112.31 

2n 

Eng 

66.40 

127-59 

3n 

P 

66.16 

129.90 

5n 

P 

65.50 

132.01 

5n 

P 

65.15 

134-52 

5n 

P 

65.06 

I35-64 

4n 

P 

64.61 

137-42 

4n 

P 

AC: 

1887.81 
1894.85 
1905.72 
1907.14 
1908.47 
1910.33 
1911.28 
1912.26 

These  positions  give  for  the  most  probable  apparent  annual 
motion  of  C: 

17542    in    45  ?9 

The  proper  motion  of  17  Lyrae,  with  which  the  moving  star 

was  first  compared,  is  given  from  meridian  positions  as  follows : 

Auwers          o:'ii2    in    68?s 

Newcomb       0.121     in    74.8 

Boss  0.121     in    83.8 

A  more  accurate  value  of  this  movement  can  be  found  from 
the  measures  of  the  other  distant  stars  which  it  is  certain  have 
no  sensible  proper  motion.  The  recent  P  measures  are: 

A  and  D 


1906.906 

295°5 

126751 

6.964 

295.6 

126.51 

7-258 

295-7 

126.03 

7.271 

295-3 

126.32 

7.291 

295-7 

126.61 

These  measures  give  for  the  proper  motion  of  17  Lyrae: 
AD       R.  A. +  071263       Decl. +  070342 
AE  0.1260  0.0224 

AF  0.1307  0.0402 

Mean  0.1277  0.0323 

Therefore  the  corrected  proper  motion  is : 
07132    in    75?8 

Applying  this  to  the  apparent  movement  of  C,  we  have  for 
the  real  proper  motion  of  that  star: 

17658    in    48^2 

For  the  purpose  of  obtaining  a  new  and  independent  value  of 
the  proper  motion  of  C,  I  have  connected  it  with  several  other 
stars  too  faint  to  have  any  sensible  movement,  and  these 
measures  were  repeated  after  an  interval  of  two  years.  The 
recent  measures  of  these  and  other  stars  in  the  field  are  as 
follows : 

C  and  E 

1908.444  i73°28  I2276o 
.460  172.93  122.51 
•479  173-43  122.70 
•537  173.42  122.61 
1910.260  174.18  124.06 
.299  174-53  124.23 
.337  174.27  124.40 
.356  174-48  124.56 
•375  174-70  124.30 


239 


Burnham:   Measures  of  Proper  Motion  Stars 


C  and  G  (11.3) 

Cc           1908.49            52.33            63.16           311 

1908.444 

ii9?8o 

130^78 

1910.32             52.14             59.92           4n 

.460 

119.80 

130.44 

EG           1908.47             60.30           113.66           5n 

•479 

I2O.OI 

130.67 

1910.34             60.24            H3-74           4" 

.482 

119.89 

130.97 

AE           1908.48           116.46            150.91           4n 

-5i8 

H9-54 

130.63 

1910.36            116.62            150.74           4n 

1910.260 

120.75 

129-55 

As  would  be  expected,  there  is  no  change  in  EG,  and  none  in 

.299 

121.25 

130.22 

AE  except  that  due  to  the  motion  of  A.    From  the  four  stars 

•  337 

121.07 

129.79 

connected  with  C  we  have  for  the  proper  motion  of  that  star: 

•  356 
•  375 

121.35 
121.40 

129.82 
129.64 

CE       R.  A.  +  1:255        Decl.  +  1-070 
CG                     1.340                     1.318 

C  and  H(i2.i) 

CH                    1.265                     1-162 

1908.460 

29?  10 

163707 

Cc                      1.470                    i.  ooo 

•  479 

29.10 

163.02 

1-333                      I-I37 

.482 
.518 

29.30 
29-15 

163.21 
163.00 

Therefore  the  annual  proper  motion  of  C  is  : 

l?752    in    49?  5 

1910.260 

28.58 

160.02 

.299 

28.92 

159-96 

The  agreement  with  the  former  result  from  the  measures  of 

•  337 

28.50 

160.27 

AC  is  all  that  could  be  expected  when  it  is  considered  that  the 

•  375 

28.83 

159-93 

time  interval  is  less  than  two  years. 

•395 

28.45 

160.12 

C  and  c  (13.6) 

9093.    Schj  19.    (8.6...  9.0) 

1908.479 

52?03 

63-23 

.482 

52.07 

63.14 

R.  A.  19"  5m  57'       Decl.  +  o°  43' 

.518 

52.88 

63.11 

1909.531            257?63              50?49 

1910.260 

52-50 

60.  10 

.534           257.80             50.37 

.279 
•  337 

51.55 
52.03 

60.07 

60.08 

1909.53             257.71              50.43 

•397 

52.50 

59-44 

Hind's  nebula  about  15'  distant  np  is  large  and  diffused,  with 

no  definite  point  for  measurement;  might  be  a  cluster  of  very 

E  and  G 

faint  stars. 

1910.444 

6o?32 

"3"37 

.460 

60.20 

113-59 

•479 

60.45 

113-64 

9094.     Z  2477  rej.     (8.  5...  10.  5) 

.482 

60.47 

"3-77 

R.  A.  19"  6"  o'       Decl.  —  4°  40' 

.518 

60.05 

113.91 

1910.260 
•337 
•  375 

60.23 
60.30 
60.43 

"3-37 
114.02 
113.66 

1911.548             45°5               27^59 
.564             45.2               27.46 
.567             45-8               27.80 

•395 

59.98 

113.91 

1911.56               45.5               27.62 

A  and  E 

Further  measures  are  needed  to  confirm  the  apparent  change 

1908.460 

I50T88 

shown  by  the  single  measure  of  Mitchel  in  1848. 

•479 

116.66 

150.91 

.482 
.518 

116.50 
116.20 

151-19 
150.65 

9116.     P  139-     (6.  7...  8.0) 

1910.299 

116.52 

150.52 

R.  A.  19*  7"  12'       Decl.  +  16°  39' 

•356 

116.65 

150-44 

AB  and  C  (7.5) 

•  375 

"6-33 

150.58 

_  „                     Hf, 

1911.334            205.70            114.00 

•  395 

"6.35 

151-40 

.356            285.30            114-56 

The  mean  results  of 

the  two  sets  of 

measures  of  the  small 

•373            285.53             114.73 

stars  around  C  arc  : 

1911.35              285.51             114.65 

CE           1908.48 

I73?26 

122^60           4n 

From  five  positions  on  I4n  by  A,  Fr,  A  and  P  (1874-1911) 

1910.32 

174.43 

124.31            sn 

the  apparent  motion  of  C  is: 

CG          1908.47 

119.81 

130.70           5n 

0^234    in     iso?7 

1910.32 

121.  16 

129.80           5n 

Therefore   if   the   meridian    value    is   correct,   AB   has   no 

CH          1908.48 

29.16 

163.07           4n 

sensible  motion.    To  test  this,  I  have  connected  faint  stars  with 

1910.33 

28.81 

160.06           5n 

each. 

240 


Burnham:   Measures  of  Proper  Motion  Stars 


AB  and  a  (13.0) 

I9II.334  I02?6  2&".00 

.411     104.3  27-50 

.414     102.7  27.51 


1911.39 


I9II-334 
•3S6 
•  373 


103.2 
C  and  D  (9.7) 

26l?02 

260.77 
260.75 


27.67 


125.01 
124.74 
125.28 


I9II-35 


260.85 


125.01 


The  proper  motions  are  given  by  Auwers : 
A  o"o3O    in    270^0 

B  0.223     in     148.5 


9118.     21  Aquilae.     H  879.     (5. 3.  ..12. 3) 
R.  A.  19"  7™  39"        Decl.  +  2°  5' 


1912.526 
•  545 
.562 


286?35 
287.03 

287.55 


36.21 
36.36 


286.98 


36.32 


1912.54 

The  proper  motion  of  21  Aquilae,  if  any,  is  small  and  un- 
rtain  from  the  meridian  positions : 

Auwers         o"oi8    in    3o6?3 

Newcomb     0.003    in    327.2 

Boss  0.007    in    206.6 

The  only  other  measures  of  B  are  my  own.  These  measures, 
continued  for  the  proper  time,  will  give  the  real  movement  of 
the  large  star. 

9123.     22483.     (7. 2... 8. 3) 
R.  A.  19"  7™  44*        Decl.  +  30°  9' 

A  and  B 
1907.523  3i8?4  9"67 


7.S42 
8.249 


317.6 
317.5 


9.96 
9-93 


1907.77      317-8 

A  and  C  (8.5) 


1907.523 
7.542 
8.249 


236.5 
236.5 


9-85 


71-45 
70.69 


1907.77  236.5 

No  material  change  in  either. 


70.99 


9135.     H  1377.     (7.0...  12. 9) 
R.  A.  19"  8m  51*        Decl.  +  47°  10' 


1912.411 
.427 
•430 


356?2 
356-8 
357-3 


36.03 
36.03 


1912.42 


356.8 


36.19 


The  prior  measures  are  too  recent  to  show  whether  or  not 
the  small  proper  motion  given  in  the  General  Catalogue  belongs 
to  the  companion. 


9137.     Cygni6.    22486.     (6.0... 6. 5) 
R.  A.  I9h9mo*        Decl. +  49°  37' 

A  and  C  (12.7) 

1910.436  6?6o  ss"9i 

.452  7.00  55.82 

.471  7.40  55.83 


1910.45 


7.00 


A  and  D  (10.8) 

1910.436  84?75 

.452  84.67 

.471  84.87 

•473  84.65 


55.85 


172.59 
173.07 
173.41 
173-45 


1910.46  84.73  173.13 

For  the  proper  motion  of  AB.    The  stars  AB  appear  to  make 
a  system  of  the  61  Cygni  class.    An  earlier  measure  of  AD  is : 
1881.52  78?3i  170^69  37n  Bl. 

From  the  two  measures  of  this  star  we  have  for  the  proper 
motion  of  A : 

o'.'67i     in    344?3 

As  the  first  position   is  the  mean   of   a  large  number  of 
measures,  the  resulting  movement,  with  a  thirty-year  interval, 
should  have  the  highest  degree  of  accuracy. 
Other  values  from  meridian  observations  are : 
Porter  o"6s8    in    341  ?9 

Paris  0.602    in    342.0 

Groombridge       0.644    in    344-6 
Boss  0.654    in    343.1 

This  star  is  frequently  erroneously  called  6  Cygni,  which  is 
No.  9374  of  the  General  Catalogue. 

9144.    TI  Lyrae.    22487.     (4.0.  ..8.1) 

R.  A.  19"  9™  40'       Decl.  +  38°  56' 

A  and  C  (10.6) 


1909.340 
•  342 
.378 


151-32 
151.28 


161.59 
161.28 


Bl. 


1909.35  151-26  161.47 

The  only  other  measure  is  : 

1880.00  151^78  i6i"o9  in 

No  sensible  change  in  AB.    If  the  large  star  has  any  proper 
motion  at  all,  it  is  wholly  uncertain. 

Auwers  o"o2O    in    299?7 

Groombridge       0.006    in     108.9 
Boss  0.003    in    270.0 

9149.    02(APP.)I78.     (5. 5...  7-5) 
R.  A.  19"  9m  52'        Decl.  +  14°  53' 


1911-583 
.602 

.622 


267 ?20 

267.75 
267.60 


89"9i 
89.75 
89.60 


1911.60  267.52  89.75 

No  change  since  1875,  and  the  stars  have  a  common  proper 
motion  if  any. 


Boss 


0.020    in     171 ?7 


241 


Burnham:   Measures  of  Proper  Motion  Stars 


9157.    02368.    (7-3... 8.5) 
R.  A.  19"  iom  37'       Decl.  +  15°  57' 

AB  and  C 
1907.542  ioo?7  i6?88 


•  578 
.638 


99.6 
101.7 


16.78 
16.77 


1907-59  100.7 

No  apparent  change  since  1878. 


16.81 


9166.     i  Vulpeculae.    H  2862.     (4.8...II.8) 
R.A.  I9biim3'       Decl. +  21°  11' 


1911-583 
.602 
.644 


12.78 
12.57 


39-25 
39.  IS 


1911.61 


12.71 


39.13 


The  measures  ( 1901-191 1)  imply  a  motion  of  about  o"ois, 
and  about  the  same  in  R.  A.  as  in  Decl.,  but  further  measures 
are  needed  for  a  definite  value  of  the  motion. 

Auwers         oToi2    in    26s?4 
Boss  0.004    in    270.0 


9171.    02370.     (7-  5...  8.2) 
R.  A.  19"  i im  19'        Decl. +  9°  8' 


1907.542 
.581 
•597 


14.1 
14.9 


I9"7S 
19.62 

19-45 


1907-57  M.4  19-61 

No  change  since  1846.    A  small  star,  Ao  78?! :  Bo  I28?o. 


9184.     H  2863.     (6. 2... ii. 7) 
R.  A.  19"  12™  10'        Decl.  — 15°  44' 


1909-534 
.627 
.666 


i7°74 
17-74 
17-03 


48T63 
48.65 
48.42 


1909.61 


17.50 


48.57 


A  continuation  of  the  measures,  commenced  in   1900,  will 
give  a  more  exact  value  of  the  proper  motion  of  A. 
Some  of  the  values  from  meridian  positions  are : 

Stumpe  o?293  in  2O4°7 

Porter  0.274  in  205.0 

Boss  0.285  in  201.1 

Paris  0.317  in  197.0 


9185.    Cygni  9.    22496.    (7.0... 10. 8) 

R.  A.  19"  I2m  10'        Decl.  +  49°  52' 

A  and  C  (10.7) 


1909.266 

•  342 

•  38i 


242° IO 
241.95 
242.20 


185.60 
185.81 


I909.33  242.08  185.58 

The  prior  measures  are  discordant  in  distance. 
1881.31  242?42  i86"o4  in 

1881.78  242.36  185.15  in 


Bl 
Bl. 


For  the  proper  motion  of  the  principal  star  (Groombriclge 
2802)  we  have: 

Groombridge      o"oi7    in    249?9 


9186.     0  Lyrae.    Sh  292.     (4. 5... 8. 8) 
R.  A.  19*  I2m  12'        Decl.  +  37°  55' 

A  and  B 

1908.463      70?92  99^9 

.479      71.10  99.48 

•  518      70.83  99.83 


1908.49 


70.95 


A  and  C  (11.5) 
1908.463  I27?90 

•479  127.97 

.518  127.35 


99-77 


100.71 
100.99 
100.45 


1908.49 


127.74 


The  only  other  measures  of  C  are : 
1879.76  I27?02  99^18 

1880.25  127.62  99.91 


100.72 


in 
in 


Bl 
Bl. 


The  proper  motion  of  6  Lyrae  is  small  and  uncertain : 
Auwers         o"oi2    in    299?4 
Boss  o.on     in    254.3 

Newcomb      0.019    in    289.5 

The  measures  of  C  should  be  continued. 


9189.     23  Aquilae.     22492.     (5. 5. ..9. 5) 
R.  A.  19"  I2m  26'        Decl.  +  o°  52' 

A  and  C  (13.7) 

12".  36 
12.56 


1911.411 
.468 
.471 


6i?8 
60.9 
60.5 


11.99 


i9".4S 


61.1 


12.30 


The  only  other  measures  of  the  faint  star  are  my  own  in 
1905.    The  proper  motion  of  23  Aquilae  is  uncertain. 
Auwers         o"o33    in    3I2?5 
Boss  0.015    in      H-3 


242 


Burnham:  Measures  of  Proper  Motion  Stars 


9192.    p  1256. 

A  and  C  (13.0) 

IOI2   526                lO?0^'? 

R.  A.  19"  i2m  36'       Decl.  +  6°  7' 

.  OC                  IQt;.  27 

.562            105.35             

excessively  faint. 

1912.54                105.32              

h  2037  and  star  (15.8.  .  .13.0) 
I909-534              70°9               48"8i 

B  and  C 
1912.526             58?i7            

.592              72-2                48.89 

•545             58.43            

1909.56                71.5                48.85 

.  562              58.48 

„,,                           T  .  .    _, 

IQI2    ^4.                      ^8   ^6 

1891-57           73°3           49"36           2n            0. 

9195.     24  Aguilae.    2  40,  App.  I.     (6.O..  .6.2) 
R.  A.  19"  12™  40'        Decl.  +  o°  8' 

A  and  a  (12.1) 
1911.411             :6o?20              49'.'28 
.430            160.58              49.88 
.468            160.10              49.42 

The  faint  star  makes  a  nearly  equilateral  triangle  with  A 
and  B.    The  proper  motion  of  28  Aquilae  is  not  certain  : 
Auwers         0*029    in    3io?8 
Boss              0.018    in    355.3 

9210.     225007V/.     (8.0...  10.  5) 
R.  A.  19"  14™  IIs        Decl.  +  19°  30' 

1911.44              160.29              49.53 

Band  6  (n.o) 
1911.411             3°2?46              59^62 

1911.280              24?!                2o'.'oi 
11.302              23.7                20.30 
11-334              23.3                19.91 
12.296              23.2                20.16 

.430            302.15              59-83 
.468            302.23              60.02 

1911.55                23.6                20.09 

1911.44              302.28              59.82 

If  the  larger  star  has  any  proper  motion,  it  is  wholly  un- 
certain from  meridian  positions  : 
Auwers          o"o6l     in     287?! 
Boss              0.009    in    341.6 

No  other  measures  of  the  faint  stars. 

9204.     22494r<?/.     (7.  4...  9.5) 
R.  A.  19"  I3m  36'        Decl.—  6°  51' 
191  i  529              8i°6                25"i7 

The  measures  are  all  too  recent  to  show  whether  the  small 
proper  motion  of  A  is  correct. 
A.  G.  Ber.      o:'o62    in    28o?3 

9225.    O2(App.)i8i.    (6.2...  6.  3) 
R.  A.  19*  15™  15"        Decl.  +  26°  26' 

A  and  B 
1910.529                3?6o              S&'.66 
.548                3.80              56.50 
•551                3-75              56.54 

•545              81.8                25.65 
.548              82.4                25.50 

1910.54                 3-72              56.57 
To  determine  which  of  these  large  stars   has  the  proper 

1911.54                81.9                25.44 
Disagrees  with  Mitchel  in  1848. 

9207.    28  Aquilae.    S  717.    (5.  6...  8.  3) 
R.  A.  19"  I4m  3'        Decl.  +  12°  9' 

motion,  I  have  measured  two  faint  stars. 
From  the  measures  of  AB  (1875-1910)  this  motion  is: 

o".o68    in     I53°i  (±  180°) 

A  and  a  (12.8) 

1910.529            169^38              36'.'iS 
.548            169.00              36.32 
.551             169.53              36.22 

A  and  B 
1912.526            I74°73              6o:'S4 
•545             175-37              60.28 
.562             175-60              60.34 

1910.54              169.30              36.23 

B  and  b  (12.0) 
1910.529              4i?7o              94*07 
.548              41-77              93-37 

1912.54              175-23              60.39 

.551              41.72              93.72 

No  change  in  the  last  50  years. 

1910.54                41.73              93-72 

243 


Burnham:   Measures  of  Proper  Motion  Stars 


9234.    H  1386. 
R.  A.  19"  15™  42'       Decl.  +  47°  48' 

The  declination  of  this  pair  in  Part  I  of  the  General  Cata- 
logue should  be  47°  instead  of  45°. 

9242.    A.  G.  229.    (9. i... 9. 3) 
R.  A.  19"  is™  56'       Ded.  +  8°  58' 


1907-559 
.562 
.578 


i68?o 
168.2 
168.2 


34"86 
34.8: 
34-76 


1907.57 


168.1 


34-81 


The  measures  given  in  the  General  Catalogue  as  of  this  pair 
from  Sola  (A.  N.  3529),  really  belong  to  a  similar  pair  3ra  52'  / 
and  5'  s.  The  components  are  DM  (8°)  4092  and  4093;  magni- 
tudes 8.5  and  8.7. 


1007-559 
.562 
-578 


346?3 
346.3 
345-5 


25.54 
25-36 


I907.57  346-0  25.49 

Both  of  these  stars  are  given  in  A.  G.  Leip. 

9251.     22514.     (9.0...  ii. 3) 

R.  A.  19'  i6m  49"       Decl.  +  67°  28' 

A  and  DM  (67°)  1134(9.5) 


1910.490 
•  493 


253°75 
253.85 


I39"02 
139-05 


1910.49 


253.80 


139-03 


1875 
1910.5 


A  and  DM  (67°)  1142  (8.9) 

A  R.  A.  +  104?  i        A  Decl.  — 16274       A.  G.  Chris. 
104.0  161.9       P 

For  the  proper  motion  of  A.    The  measures  of  AB  (1832- 
1903)  give  this: 

o7i2i    in    191?! 

9286.    H  886.    (10.5... 11.5) 
R.  A.  19"  18™  5'       Ded.  +  21°  55' 


1910.493 
.509 
•  529 


46?8 
46.8 
46.2 


8726 
8.15 
7.86 


1910.51  46.6  8.09 

H  886  is  in  the  central  part  of  h  2039.    No  other  measures. 

9270.    H  1391.    (8.9... 10.3) 
R.  A.  io»  18"  24-        Decl.  +  40°  46' 


1909.227 
•493 


9S°4 
95  5 


19*81 
19-91 


1909.36  954  19.86 

No  other  measures.  A  is  nearly  in  the  center  of  an  equi- 
lateral triangle;  the  star  measured  is  the  brighter  of  the  three. 
H  gave  8l?4. 


9282.    22515.    (8.0... 9.0) 
R.  A.  I9hi9m23"        Decl. +  21°  17' 

A  and  C  (n.8) 

i8i?95  68790 

181.20  68.63 

181.40  68.77 


1910.493 
-509 
-529 

1910.51 


181.52 


68.77 


For  an  independent  value  of  the  proper  motion  of  A.  From 
the  measures  of  AB  (1829-1905)  the  motion  of  the  principal 
star  is : 

o7i2i    in    6?3 

9291.    02372.     (7.0... 8.8) 
R.  A.  19"  19™  48"       Decl.  +  46°  58' 

A  and  B 
1907-542  56?S  78"82 


-559 
•578 


56.6 
56.4 


79.14 
78.74 


1907-56  56.5 

No  material  change  since  1849. 


78.90 


9294.    4   Vulpeculae.    H  2871.     (s.4...n.o) 
R.  A.  19"  20™  12'        Decl.  +  19°  34' 

A  and  B 

1907-523     105^0      24^46 

24.03 
24.18 


•  542 
.562 


106.4 
104.9 


1907-54 

1908.444 
.460 

•479 
.482 


105.4 

I04?8s 
106.30 
105.48 
105.83 


24.22 

23"65 
23-91 
24.10 
24.50 


1908.47  IDS. 6i 

A  and  C  (11.7) 


1908.460 
.479 
.482 


198.87 
198.68 


24.04 


53.91 
53-79 


1908.47  '198.79  53-95 

No  other  measures  of  C.     The  six  positions  of  AB  (1887- 
1908)  give  for  the  proper  motion  of  4  Vulpeculae: 

o7ii3    in     I3o?8 
From  meridian  observations : 

Auwers         o"o8i     in     143^5 
Boss  0.106    in     133.7 

9295.     Espin.     (8. 8... 9. 9) 
R.  A.  19"  20ra  14"        Decl.  +  64°  19' 
1910.490  2i8?o  4773 

.493  220.0  4.69 

.509        219.8  4.58 


1910.50 


219.3 


4.67 


244 


Burnham:   Measures  of  Proper  Motion  Stars 


9300.    3  Cygni.     (6.  4...  10.  8) 
R.  A.  19"  20m  28*        Decl.  +  24°  42' 

1911.184              66?95     •         34"o2 
.280              66.85              33-86 
.299              66.80              33.97 
.302              67.29              33.97 

This  is  confirmed  by  the  measures  of  AD  which  give  : 
07043    in     i6i?2 

The  only  prior  position  of  this  star  is  : 
1878.61            64?48           149746           3n            Bl 

Of  AC  there  is  only  a  single  measure,  and  later  observations 
should  be  made  of  both. 

1911.27                66.97              33.95 

From  the  seven  positions  by  O2  and  P  (1867-1911)  the  proper 
motion  of  3  Cygni  is: 
o76si    in    I95?3 

Some  of  the  star  catalogue  results  are: 
Auwers         o"6s8    in     198?! 
Paris             0.655    >n     196.9 
Boss              0.658    in     196.5 

9304.    H  1395.    (8.8...  8.  8) 

There  is  a  14  m  star  about  the  same  distance  as  B  from  A, 
73°5:257o. 

9317.    01286.     (8.  3...  9.0) 
R.A.  I9h2im39s        Decl.  +  35°  41' 

A  and  B 

1907.523             K>4?7                  67i6 
7.542            105.7                 6.51 
8.370            103.6                 6.19 
8.482            102.9                6.12 

R.  A.  19"  20"'  52'       Decl.  +  36°  53' 

1907.542             66?  i                 2771 
8.444             65.1                 2.67 
8.520             64.4                2.70 

1907.98             104.2                 6.24 

1909-534            I02?2                 6:'so 
.570            102.5                 6.12 
.589            101.8                6.27 

1908.17               65.2                 2.69 
Probably  fixed. 

1909.56                    102.2                         6.30 

B  and  C  (12.5) 
1908.482            i45?6                o7o8 
.520            141.4                0.90 

9308.    22521.    (5.  5..  .10.  3) 
R.  A.  19"  2im  14'        Decl.  +  19°  39' 

A  and  B 
1908.444              37°97              24790 
.460              37.87              24.95 

1908.50             143.5                 0.94 

A  and  D  (u.o) 
1908.518              38?7                37753 
•  520              38.3                37-32 
•537              38.5                37.92 

.479              38.67              24.98 

1908.52                38.5              '  37.59 

1908.46                38.17              24.94 

A  and  C  (9.5) 
1908.444            322?40              70714 
.460            322.53              70.37 

B  and  D 
1908.518              28?9                35751 
.520              28.6                35.16 
•537              29.5                35.72 

.479            322.60              70.06 

1908.52                29.0                35.46 

1908.46              322.51              70.19 

A  and  D  (9.5) 
1908.444              63?83             I49"72 
.460              64.03             149.51 
.479              64.10            I49-S9 

Further  measures  are  needed  to  determine  the  true  relation 
of  the  three  components  of  the  triple.    There  is  proper  motion 
in  A  or  B  of  about  o7i8.     (See  General  Catalogue  Part  II.) 
The  measures  of  D  should  be  continued. 

1908.46                63.99            149.61 

The  proper  motion  of  the  principal  star  (Bradley  2462)  as 
given  from  meridian  observations  seems  to  be  certainly  wrong 
in  amount  and  direction  : 
Auwers         o7o75    in    237^8 
A.  G.  Ber.     0.074    m    223.3 
Boss              0.057    >n     r97-4 

•          9320.     Ho  449.     (9.0.  ..12.  3) 
R.  A.  19"  21™  41  "        Decl.  +  27°  8' 

1907.348            I77°8                I3"69 
•351             179-0                13-68 
.463             179.9                13-87 

1908)  give  for  this  motion  : 
0^041     in     I78?4 

1907.38              178.9                13.75 
Measures  discordant,  and  change  doubtful. 

245 


Burnham:   Measures  of  Proper  Motion  Stars 


9335.    H  887.    (7.0...  13.  2) 
R.  A.  19"  22m  54'       Decl.  —  7°  17' 


1912.408 
•430 
•465 


347°7 
347-7 
349-6 


3S"H 
35-34 
34.91 


1912.43  348-3  35-13 

The  large  star  is  supposed  to  have  a  small  proper  motion. 
Radcliffe     0^054    in    303^9 

The  other  measures  are  too  recent  to  give  an  independent 
value.    The  observations  should  be  continued. 

9355.    2  2532.    (6.0... 10. 2) 
R.  A.  19"  24"'  9'        Decl.  +  2°  39' 

A  and  B 

4°  15  34''i3 


1911.430 
.487 
.529 


4-40 
4.08 


33-90 
33.71 


1911.48 


4.21 


33.91 


The  four  positions  by  2,  A  and  fl,  each  on  3n  (1829-1911) 
give  the  proper  motion  of  A : 

o"oi4    in    23  ?9 

There  is  a  13. 5  m  star  nearer  A,  and  making  an  equilateral 
triangle  with  AB,  Ao  7o?7:  Bo  I34?3- 


B  and  C 


1911.529 


No  proper  motion  found  in  meridian  lists ;  and  not  given  in 
Boss'  General  Catalogue. 


9357.    H  888.    (9.6...  10.4) 
R.A.i9»24nli3<        Decl.  +  9°  2' 


1911.414 

-433 
.468 


230.4 


10.27 


1911.44 

No  other  measures. 


230.8 


10.30 


9358.    Ho  578.    (7.0...  12.0) 
R.  A.  19"  24™  28'        Decl.  —  6°  45' 


1911.526 
.529 
•  545 


lo6?4 
105.4 
105-3 


23-55 
23-54 


I9II-53  105-7  23.62 

From  the  four  positions  by  Ho,  Doo  and  3  on  12  n  (1894- 
1911)  the  proper  motion  of  the  principal  star  is: 
o7i66    in    249?4 

From  meridian  observations : 

Porter          o"i88  in  233?: 

Bossert         0.220  in  251.4 

Paris             0.149  in  224.2 


9360.    H  889.(8.s...ii.2) 
R.  A.  19"  24m  29'        Decl.  +  9°  3' 


1911.414 

•433 
.468 


ioo?4 

99-4 
99.3 


25.28 
25.53 


99-7 


25.45 


1911.44 
No  other  measures. 

H  889  and  h  2043 
1911.43        AR.  A. +  82:7        A  Decl.  —  215^5 

There  is  a  faint  pair  involved  in  h  2043,   referred  to  by 
Herschel;  magnitudes,  11.2  and  12.2: 


1911.414 
.468 


231.7 


16.42 


1911.44 


231.2 


16.20 


9399.     O2  374  n?/.     (7. 2... 10. 7) 
R.  A.  19"  27™  51"        Decl. +  49°  57' 


1907.542 
8.370 
8.444 


2o6?8 
296.5 
296.9 


i8"62 
18.77 
18.77 


1908.12 


296.7 


18.72 


No  certain  change.    The  proper  motion  of  the  large  star  is 
given  in  Groombridge: 

o'.'o39    in    98?8 


9401.     22540.     (7.  5...  9.0) 
R.  A.  19"  28™  3'        Decl.  +  20°  9 

A  and  C  (12.8) 

1912.296  22O?88  i47"3 

.351  220.83 

.353  221.23 


147-00 
146.89 


220.98 


147.06 


1912.33 

No  other  measures  of  C.    The  relative  motion  in  AB  is  small 
and  uncertain.    The  proper  motion  of  A  is  given: 
A.  G.  Berlin      o"o57    in    357?2 


9404.     u.  Aquilae.     P  653.     (4.  8...  13.0) 
R.  A.  19"  28™  14'       Decl.  +  7°  8' 

A  and  B 
1908.460  28o"o3  29^34 


.482 


280.40 
279.92 


29.20 
29.14 


1908.49 


28o.I2 


A  and  C  (13.0) 
1908.460  292^35 

.482  292.00 

.518  291.00 


29.23 

28':86 
29.32 
29.02 


1908.49 


291.78 


29.07 


246 


Burnham:   Measures  of  Proper  Motion  Stars 


A  and  D  (n.o) 
1908.460            345°75              63-'o6 
.482            345-57              63.04 
.518            345-48              62.91 

B  and  C  (u.i) 
1912.526            284^6                 4"30 
.545            284.0                 4.02 
.562            283.2                 4.07 

1908.49              345.60              63.00 

A  and  E  (9.4) 

1908.460              ;o?3°            179*43 
.482              70.30            179-74 
.518              70.35            179-51 

1912.54              283.9                 4-13 

The  only  other  measures  of  AB  are  my  own.    No  evidence 
of  change  in  BC. 

1908.49                70-32             I79.56 

From  the  measures  of  the  several  companion  stars,  we  have 
the  following  for  the  movement  of  A  : 
AB        R.  A.  +  o"25o        Decl.  —o?  1  10 
AC                      0.227                      0.166 
AD                     0.238                   -o.lli 

9457.     H  892.     (9.0...  ii.  4) 
R.  A.  19"  31"  so5        Decl.  —  8°  35' 

1907.523              is?3                23^42 
•559              iS-i                23.53 
.578              15-3                23.42 

AE                     0.244                     0.167 

I907.55                15-2                23.46 

+  0.240                 —0.138 

Therefore  the  true  proper  motion  of  n  Aquilae  is  : 
o"277    in     ii9?9 

From  meridian  positions  we  have  : 
Auwers         o!'233    in     124^7 
Boss              0.261     in     125.5 
Newcomb      0.261     in     124.3 

9438.     Espin  129.     (9.  4...  10.3) 

The  principal  star  is  only  yellowish. 
No  other  measures. 

9458.     sSagittae.     (5.  6...  7.  9) 
R.  A.  19"  31"'  5i'        Decl.  +  i6°i2' 

A  and  B 
1912.430              8i?43              89^93 
.465              81.08              89.92 
.485              81.01              89.92 

R.  A.  19"  30™  18"        Decl.  +  52°  33' 

A  and  B 
1908.266            22i?5                  3"29 
.331            224.9                 3.26 
.370            226.3                  3-52 

1912.46               81.17              89.92 

From  the  measures  of  AB  by  OS,  A  and  ft  (1840-1912)  the 
apparent  motion  of  A  is  : 
ol'o22    in    78?4 

The  star  catalogues  make  this  uncertain  : 

1908.32              224.2                  3.36 

A  and  DM  (52°)  2458 
1908.266            273?  15              7i"77 
.331            273.22              71.86 
.370            273.52              71.86 

Auwers         o"oi3    in    297^5 
Newcomb      0.017    m      75-4 
Boss              0.019    in      47-9 

It  is  probable  that  B  is  practically  fixed  ;  to  make  certain  of 
this,  I  have  connected  a  third  small  star. 

1908.32              273.30              71.83 

There  is  an  error  of  i°  in  the  declination  given  by  Espin, 
and  repeated  in  Part  I  of  the  General  Catalogue.    It  should  be 

1912.430            28o?20             ioo"o6 
.465            280.31              99.28 
•  487            279.55              99-00 

+  52°  33'-    The  principal  star  is  DM  (52°)  2459. 

9447.     Lalande  37162.     (7.  5.  ..10.3) 
R.  A.  I9h3im8"        Decl.  —  10°  15' 

A  and  B 
1912.526            28s?oo              82^10 
.545            286.03              82.28 
.562            286.62              82.13 

1912.46              280.02              99-45 

9461.     02  (App.)  187.     (7.  2...  7-7) 
R.  A.  19*  31"  55'        Decl.  +  46°  10' 

A  and  B 
1911.509            287?25              64^20 
.526            287.08              64.10 
.529            286.85              64.47 

1912.54              286.18              82.17 

1911.52              287.06              64.26 

247 


Burnham:   Measures  of  Proper  Motion  Stars 


A  and  C  (7.6) 
1911.509           255?o7           128797 
.526           254.75           128.63 
•529           255.00           129.12 

9493.    11893.    (9-  2...  9.  4) 
R.  A.  19"  33m  46'        Decl.  +  9°  56' 

I907.3SI             I92?7                  7"65 
.463             192.4                  7.80 
-485             192.7                  7.83 

1911.52             254.94           128.91 

At  least  two  of  these  three  nearly  equal  stars  have  some 
proper   motion.     Faint  stars   should   be   connected   with   the 
brighter  ones. 

9470.     H  1423.     (6.  5...  II.  2) 
R.  A.  19"  32™  22'       Decl.  +  29°  5' 

1912.296                 I28?2                      20781 

.351            128.8               20.58 
•353            127-8               20.89 

1907.43              192.6                 7.76 

Distance  larger   in  the   measures   of    1894.     The   apparent 
change  should  be  confirmed  by  later  measures. 

9495.    II  1427.     (10.5...  10.  7) 
R.  A.  19"  33'"  51'        Decl.  +  46°  2' 

1911.509            290?3                  9755 
.526            287.1                  8.53 
.529            285.3                  8.41 

1912.33             128.3               20.76 

The  only  prior  measure  is  my  own  in  1900.    The  place  of 
this  star  is  correctly  given  in  Part  I  of  the  General  Catalogue, 
but  wrongly  called  9  Cygni.     It  is  DM  (29°)  3670.    9  Cygni, 
about  2™  20'  preceding  H   1423,  has   a  small   and  uncertain 
proper  motion  : 
Auwers         o7o2i     in     is8?5 
Boss              0.025    'n      43-4 

9485.     6  Cygni.    f}  1131.     (5.0...  14.  3) 
R.  A.  19"  33™  13'        Decl.  +  49°  56' 

A  and  C  (n.o) 
1909.266            i82?9               44758 
.342            182.6               44-8o 
.381            182.5               44.85 

1911.52              287.6                 8.83 

About  15'  »»/  II  1427  is  h  2044  which  Herschel  describes  as 
a  "fine  cluster  of  perhaps  100  stars."    No  other  measures  of 
H  1427. 

9504.    45  Aquilae.    H  2888.     (5.  8...  13.  7) 
R.  A.  19"  34m  33'        Decl.  —  o°  54' 

I9I2.54S            353°9               42712 
•562            355.0               42.16 
•564            353-7                41-81 

1912.55              354.2                42.03 

The  measures  of  the  faint  star  are  too  recent  to  give  a 
reliable  value   for   the   proper   motion   of  45   Aquilae.     The 
meridian  positions  leave  this  very  uncertain  : 
Auwers         o7oi4    in    328?o 
Boss              0.023    in      64.5 

9522.    2  2561  rej.    (7.  9...  10.  6) 
R.  A.  19"  35'°  57*       Decl.  +  26°  51' 

I9I0.395            309°8                17751 
.436            309.8                17.24 
.452            310.6                17.33 

1909.33             182.7               44.74 

From  the  measures  of  C  (1852-1905)  I  have  shown  that  the 
motion  of  9  Cygni  is  : 
07272    in    355?3 

Other  values  of  the  proper  motion  are: 
Auwers         07244    in    35i?8 
Paris             0.241     in    354.5 
Newcomb     0.252    in    354.9 
Boss             0.249    in    353.5 

9486.    a  Aquilae.    H  2886.     (5.  2...  12.0) 
R.  A.  19"  33™  13*       Decl.  +  5°  7' 

1912.430            327?93              47"28 
.465            328.16             48.12 
.487           327.33             48.34 

1910.43              310.1                17.36 

The  earliest  measure  of  this  is  on  a  single  night.     One  of 
Marth's  nebulae  is  about  15'  distant  tip. 

Nebula  and  DM  (27°)  3459  (9.1) 
1910.436            3i3?8             141781 
•452           313.4             141-41 

1910.44             313.6             141.61 

This  has  been  previously  measured. 
1890.66           3i3?o            I4i"50           2n            Kobold. 

The  nebula  might  be  a  group  of  very   faint  stars.     The 
nucleus,  or  faint  star,  has  a  small  companion,  152°  :  3",  and  a 
13  m  star  more  distant. 

Nebula  (nucleus)  and  star  13  in 
1910.436            35i?o                25758 

1912.46             327.81             47.91 

The  only  other  measure  is  that  given  in  the  General  Cata- 
logue.    The  proper  motion,  if  any,  la  very  uncertain.     The 
measures  of  the  faint  star  should  be  continued. 
Auwers        07027    in    27875 
Newcomb     0.004    ln    180.0 
Boss             o.ooi    in    270.0 

248 


Burnham:   Measures  of  Proper  Motion  Stars 


This  appears  to  have  been  measured  from  some  other  part 
of  the  nebula: 
1890.76           340?s           6"73            in           Kobold. 

9531.     X  Aquilae.    O2  380.     (7.0.  .  .7.2) 
R.  A.  19"  36™  55"        Decl.  +  ii°33' 

AB  and  C  (13.0) 
1912.430              48^53              8i'.'4i 
.465              47-98              81.63 
.487              48.27              81.92 

9601.     Da  13.     (7.  2...  11.  4) 
R.  A.  19"  40™  58'        Decl.  +  44°  38' 

A  and  C  (10.7) 
1909.340            289^58            153^45 
.342            289.55             I53-07 
.381            289.70            153.56 

1909.35              289.61             I53-36 

Near  8  Cygni.    The  other  measures  are: 
1877.85           289^75            153^39            in            Bl 
1879.37           289.82            152.39           in            Bl. 

9607.    22578.     (6.  6...  7.  4) 
R.  A.  19"  41™  15"        Decl.  +  35°  48' 

A  and  C  (12.0) 

1908.463            357-53              45'-45 
•  479            3S7-6o              45.42 
.482            357.87              45.61 

1912.46                48.29              81.65 

For  the  proper  motion  of  the  close  pair.     This  does  not 
appear  from  the  meridian  positions  : 
Auwers         o"o3i     in    3O2?7 
Boss              0.013    in     180.0 

9560.     16  Cygni.    2  46,  App.  I.     (5  .  i  .  .  -5  •  3> 
R.  A.  19"  38m  38'        Decl.  +  50°  15' 

1909.438            I34°9°              38"52 
•455             134-95              38.16 
.458            134.78              38-51 

1908.47              357-67              45-49 

The  only  other  measures  are  those  given  in  the  Genera 
Catalogue  by  Glasenapp. 

A  and  D  (9.5) 
1908.463            251^28            143-35 
•479            251.20            143-35 
.482            251.30            143.26 

1909.45              134-88              38.40 

The  large  stars  have  nearly  the  same  proper  motion,  and 
make  a  system  of  the  61  Cygni  class. 
A        Auwers             o"228    in    229^2 
Paris                  0.263     in    228.8 
Porter               0.222    in    227.9 
B        Auwers              0.199    in    220.2 
A.  G.  Harv.       0.161     in    228.5 

h  2050  and  star  9.5  m 
1909.458            I94?o8              96"!  i 
.476            194-09              95-65 
.493             194.18              96.31 

1908.47              251.26            I43-32 

Of  this  we  have: 
1880.10           25i?32            142^85           2n            Bl 

The  apparent  change  in  the  distances  of  both  stars  require, 
confirmation. 
There  is  a  14  m  star  near  C,  75?o  :  n76. 

9617.     i?  Cygni.    22580.     (5.  i.  ..8.  i) 
R.  A.  19*  41™  52'       Decl.  +  33°  27' 

A  and  C  (9.0) 

1908.266            I39°55             I4i"4i 
.288            139-88            141-47 
•331             139-63             141.20 

1909.48              194-12              96.02 

This  is  2m  55*  directly  following  16  Cygni.    The  prior  meas- 
ures are: 
1876.90           i94?5           97"9           2n            Wn 
1887.79            I95-I            96.8            in           Eng 
1891.75            194.2           96.16         2n            0 

9582.     02384.     (7.0...  7.  3) 
R.  A.  19"  39™  32'        Decl.  +  38°  2' 

A  and  C  (9.4) 
1909.496            297?o                s8"94 
.512            297.5                59-31 
.515            296.9                59.46 

1908.29              139-69            141-36 

A  and  B  make  ^  2580,  and  appear  to  form  a  system  of  th 
61  Cygni  type.    There  are  many  stars  in  the  field.    We  hav 
the  following  measures  of  AC: 
1852.71            I45°48            i6i?68           3n            O2 
1859.63            144-93           159-01            in           O2 
1883.48           142.75            150.11            in           H2 
1887.81            142.08           148.81            2n            Eng 
1908.29            139-69           141-36           3"            P 

From  these  positions  the  proper  motion  of  17  Cygni  is  : 
o"456    in    I79?7 

1909.51              297.1                59.24 

The  only  other  measure  is  : 
1856.83           208?!            58:50           in           Se. 

249 


Burnham:   Measures  of  Proper  Motion  Stars 


From  meridian  observations  : 
Auwers         0*435    in     i8i?7 
Porter          0.438    in    180.7 
Boss              0.452    in     178.6 

9626.    H  1439.    (7.  4...  9.1) 
R.  A.  19'  42™  23'       Decl.  +  55°  33' 

1907.312           aoo?5               32761 
.329           200.1               32.70 

9689.    02389.    (6.  9...  13) 
R.  A.  19*  46'"  58'       Decl.  +  30°  50' 

A  and  B 
1906.906            307°5                  9"89 
6.964           307.6               10.00 
7.312           307.4                9.81 

1907-06             307.5                 9.90 

A  and  C  (8.8) 
1907.271            i84?5               12762 
.312            184.2               12.53 

1907.32             200.3               32-65 
No  early  measures. 

9652.    A.  0.238.    (9.  i...  9.  2) 
R.  A.  19"  44m  25'       Decl.  +  6°  55' 

1007.463            273?o                 5?6s 
.482           274.6                 5.86 
.485            273.8                 5-67 

1907.29             184.3               12.57 

The  nearest  companion,  13  m,  was  added  by  Espin  in  1906. 
No  change  in  AC. 

9691.    H  1447.     (7.  9...  10.  9) 
R.  A.  19"  47™  9-       Decl.  +  33°  46' 
A  and  B 

1907-312            333°9                i81'39 
•465            333-8                18.29 
.482            334.6                18.22 

1907.48             273.8                5.73 
The  position-angle  of  1894  is  too  large. 

9677.    19  Cygni.    H  603.    (6.o...io.o) 
R.  A.  19*  46™  19'       Decl.  +  38°  25' 

A  and  B 
1907.312            I03?97             54701 
.329            104.47             54.48 
.331            104.27             53-91 

1907.42              334.1                18.30 

A  and  C  (11.3) 
1907.312             86?2               22^05 
•465             85.4               22.31 
.482             85.7               22.16 

1907.42               85.8               22.17 
No  early  measures. 

9716.    H  1449.    (9.0...  12.  2) 
R.  A.  19"  48™  39"       Decl.  +  32°  44' 

1910.263            280?!                 7763 
.473            282.8                  7.29 
.490            282.6                 7.28 

1907.32              104.24             54.13 
B  and  C(ii.7) 

1907.312                  II?7                    2I?42 

.329             ii.  i               21.50 

1907.32               11.4               21.46 

From  a  mean  of  my  two  sets  of  measures,  and  a  mean  of  the 
two  positions  by  Engelhardt,  the  proper  motion  of  the  principal 
star  is  : 
Measures  of  B    07103    in    I7O?7 
Auwers                0.112    in        3.6 
Bossert                o.no    in       6.1 
Boss                     0.098    in        6.2 

The  measures  of  C  do  not  show  any  motion  in  B,  but  later 
observations  will  make  this  certain. 

9683.    A.  0.240.    (8.8...  8.8) 
R.  A.  19"  46™  35'       Decl.  +  47°  30' 

1907.444           256?s               14^50 
.465            256.0               14.52 

1910.41              281.8                 7.40 

Two  other  similar  pairs  in  the  field,    /j  2052  is  2™  50*  pre- 
ceding H  1449. 

9724.    ftAquilae.    02532.    (3.  8.  ..11.3) 
R.  A.  19'  49™  25'       Decl.  +  6°  6' 

A  and  C  (to.o) 
1907.711            348?oo            i667oo 
.714           347-7°            166.20 
.731            348.03            166.53 

1907.72             347.91            166.24 

The  prior  measure  is  : 
1879.38           347°i3           I5i"89       31           P' 

I907-45             256.2               14.51 

250 


Burnham:   Measures  of  Proper  Motion  Stars 


These  measures  give  for  the  proper  motion  of  (5  Aquilae: 
o"si2    in     176?! 

From  some  of  the  star  catalogues  we  have  : 
Auwers  o"474  in  I77?8 
Bossert  0.470  in  178.2 
Newcomb  0.482  in  175.7 
Boss  0.484  in  175.9 

The  relative  motion  in  AB  is  very  slow. 


9756.     22602.     (8. 5... 9. 2) 
R.  A.  19'  49m  34*        Decl.  — 13°  40' 


1908.537 
•559 
•  573 


148.7 
148.4 


12.30 
12.38 


1008.56 


148.5 


12.32 


Struve's  place  of  2  2602  in  Pos.  Med.  belongs  to  another  star 
2°'  40'  /,  SD  (13°)  5537,  while  2  2602  is  No.  5522.  The  place  in 
Part  I  of  the  General  Catalogue  should  be  as  given  here. 

It  is  a  coincidence  worth  mentioning  that  the  star  given  in 
Pos.  Med.  is  a  pair  very  much  like  the  other  except  in  magni- 
tudes : 

A  and  B  (9.0..  .13.0) 
1908.537  is6?5  14^72 

•  573  158.0  14.77 

•575  158.5  14-87 


1908.56 
No  other  measures. 


157-7 


14.79 


A  and  SD  (13°)  5536 
1908.520  I92?23  131^64 

•537  192.40  131.89 

•559  192.47  131-42 


1908.54 


192.37 


131-65 


It  is   evident  that  neither  of  these  stars  has   any  proper 
motion : 

1864.77  I02?os  I3i"26  in  A. 


9765.     q  Cygni.    22605.     (5-0... 7-5) 

R.  A.  19"  52™  32'        Decl.  +  52°  7' 

A  and  C  (13.8) 


1908.425 

•444 
.460 


55?6 
54-o 

54-3 


i8?6s 
19. ii 
18.76 


1908.44  54.6  18.84 

This  faint  companion  has  not  been  previously  seen. 
A  and  D  (10.4) 


1908.422 

.425 
-444 


61.30 
61.30 


165.21 
165.64 


1908.43 


6i.33 


165.36 


Of  the  distant  star  we  have: 

1880.14  6i?5o  I63V20          2n  Bl 

The  two  positions  give  for  the  apparent  motion  of  A : 
0^078    in    229?o 

Further  measures  are  required  to  improve  the  value  pre- 
viously given. 

Auwers         o"osg    in    233^8 
Boss  0.051     in    232.6 


9775.    OSsgirej.    (7. 5... 10. 2) 
R.  A.  19"  52™  58"       Decl.  +  43°  56' 


1909.342 
.381 


5i°6 
52-0 


17:88 
17.69 


1909-36 


51.8 


17.78 


No  change  since  1866.    In  Part  I  of  the  General  Catalogue 
for  DM  (43°)  3425  read  3422;  and  R.  A.  should  be  22'  less. 


9856.    Ho  118.    (9.I...II.O) 
R.  A.  19"  58'"  7'        Decl. +  33°  20' 


1909.458 
•  476 


29-5 
29-5 


2771 
2-51 


1909.47 


29-5 


2.61 


h  2062  is  about  15'  distant  sp;  faint  and  small,  but  bisection 
fairly  certain. 

h  2062  and  star  12. 5m 

1909-458  52?!  36^63 

.476  49.4  36.20 


1909.47 


50.7 


36.41 


h  2062  and  star  io.3m 
1909.458  240^5  40^56 

.476  .         238.5  40.60 


1909.47 


239-5 


40.58 


In  his  observations  of  nebulae,  Engelhardt  has  compared 
these  stars  by  differences  of  R.  A.  and  Decl.,  and  therefore  the 
apparent  change  is  not  to  be  taken  as  real. 

1887.78  54?2  39^3  in  Eng  (II) 

1887.78  240.5  42.6  in  Eng  (II) 


9863.    22622.    (8.0... 8. 7) 
R.  A.  19"  58™  42'        Decl.  +  16°  40' 

A  and  C  (10.5) 
1908.520  308?!  I7?i8 


•537 
•  559 


308.8 
308.9 


16.95 
17-35 


1908.54 
No  certain  change. 


308.6 


17.16 


251 


Burnham:   Measures  of  Proper  Motion  Stars 


9882.    H  1471.    (5. 9... ii. 5) 
R.  A.  19"  59™  54'        Decl. +  3i°S3' 


1907.312 

6?2 

y>".u 

•  329 

6.9 

30.36 

-463 

6.5 

30.30 

1907-37 

6-5 

30.26 

No  early  measures.     The   proper  motion,   if  any,  is  very 
small : 

Boss     o"oi2    in    i86?i 


9903.    H  1479.    (7.7...IO.O) 
R.  A.  20"  om  47'        Decl.  +  25"  15' 


1911.583 
.644 

.663 

2?2 
2.2 
2.2 

33"«3 
33.58 
33-95 

1911.61 

2.2 

33-79 

No  early  measures. 


9905.    H  1477.    (8.0... 10. 6) 
R.  A.  20"  o™  55'       Decl.  +  12°  20' 

1911-583 
.602 
.625 


271.2 
270.5 


19791 
20.23 
19-99 


1911.60  270.7  20.04 

The  only  other  measures  are  of  recent  date. 

9911.    H  904.     (8.8... 10.4) 
R.  A.  20'  i™  14'       Decl.  +  10°  14' 


1907-523 
-578 
.581 


3i7°9 
317.7 
318.2 


27".6o 
27-33 
27-35 


1907.56 
No  other  measures. 


3I7.9 


27-43 


9935.    ^  2640.    (6.0. .  .9.9) 

R.  A.  20"  3"  14'        Decl.  +  63°  33' 

A  and  C  (10.8) 

I909-455  8i?3i  153'' 16 

.493  81.20  153.52 


.496 


81.20 
81.17 


153.65 


1909.48  81.23  153-44 

The  proper  motion  of  A  is  evidently  very  small  and  un- 
certain : 

1880.80    81^28     i 53"4°    3n     Bl. 


From  meridian  positions : 

Boss 
Greenwich 


in 


0.052    in     15.7 


9944.    22642.    (8. 7... 8. 7) 
R.  A.  20"  3m  57'        Decl. +63°  21' 

AB  and  C  (12.4) 

1912.296  38?55  90794 

•351  39.13  00.97 

•353  39.51  90.98 


1912.33 


39-06 


90.96 


No  other  measures  of  C.  The  close  pair  appears  to  be  a 
system  of  the  61  Cygni  type.  The  proper  motion  is  given  in 
the  General  Catalogue: 

Stumpe  o"247    in    51?$ 

Porter  0.256    in    50.4 


9949.    22634.    (8.0... 9.5) 
R.  A.  20"  4m  6'       Decl.  +  16°  27' 

A  and  B 
1911.356  I3?6  s"48 


•  392 

•  395 


13-8 
14.2 


5.67 
5-51 


1911.38      13.9 

A  and  C  (12.9) 
1911.356     3i3?9O 
•392     3I3.50 
•395     313.70 


5-55 


76.17 
76.32 


1911.38 


76.44 


313.70 

C  for  proper  motion  of  AB.  This  is  given  from  meridian 
positions : 

A.  G.  Ber.      o"i84    in    357?3 

The  Harvard  stellar  nebula,  Dreyer  6879,  is  about  15'  dis- 
stant  nf.  It  has  a  diameter  of  3"7,  and  resembles  a  star  of  10.7 
magnitude  out  of  focus. 

Nebula  and  star  (10.7..  .10.7) 
1911.39.2  22i?74  84^63 

.395  221.90  84.98 


1911.39 


221.82 


84.80 


9950.    22635.    (7-0...  10. 5) 
R.  A.  20"  4m  19"        Decl.  +  8°  6' 

A  and  C  (12.8) 
I9".545  43°05  7i"67 


.548 
.564 


42.90 
42.97 


71.61 
71-65 


I9II-55 


42.97 


71.64 


No  other  measures  of  C.  A  and  B  have  a  common  proper 
motion : 

Glasgow  o'.'i79    in    2ii?5 

Paris  0.220    in     199.7 

Porter  0.210    in    208.3 


252 


Burnham:  Measures  of  Proper  Motion  Stars 


9965.    H  2936.    (8.  8...  9.  i) 
R.  A.  20"  5™  19s        Decl.  +  58°  47' 

I908.S7S            252^0                12^53 
.633            252.1                12.60 
.636            252.0                12.73 

1911.411             82?76             64  ''43 
.433             82.48             64.61 
.449             82.60             64.34 

1911.43               82.61             64.46 

B  and  C  (ii.o) 
1908.594              65^90              25^73 
.597             66.88             25.45 
.613             66.15             25.69 

1908.61              252.0                12.62 
No  other  measures. 

9997.     Espin  132.     (8.  8...  9.0) 
R.  A.  20"  7m  12'       Decl.  +  56°  36' 

A  and  B 
1907.638              82?4                  5"4S 
8.252              83.5                  5-79 
8.370              81.3                  5-S-i 

1908.60               66.31             25.62 

1911.433             66?82             25^26 
.449              66.17              25.35 
.471              66.63              25.39 

1911.45                66.54              25-33 

The  brightness  of  B  seems  to  have  been  greatly  over-esti- 
mated in  1901.    I  have  connected  with  it  a  faint  star.    These 
are  all  the  measures  of  BC. 
We  have  for  the  proper  motion  of  A: 
Measures      o"272    in    34O?4 
Radcliffe       0.262    in    336.7 
Paris             0.268    in    327.9 
Porter           0.220    in    332.4 

The  measures  of  AB  should  be  continued. 

10009.    2  2646.     (7.0...  8.  8) 
R.A.2o"8rai'       Decl.  —  6°  25' 

A  and  B 
1909.666             46^8               2IT66 
.703             46.6               21.78 
.706             46.8               21.54 

1908.09               82.4                 5.58 

A  and  C  (8.6) 
1907.638             6o?5               37"70 
8.252             59.9               37-79 
8.370             60.6               37.53 

1908.09               60.3               37.67 

B  and  C 

1907.638              57°°                32"50 
8.252              56.4                32.65 
8.370              57-0                32.49 

1908.09                56.8               32.55 

The  only  other  measures  are  given  in  Part  I  of  the  General 
Catalogue. 

10005.    22649.    (7.  7--.  8.8) 
R.  A.  20"  7m  34'        Decl.  +  31"  43' 

A  and  C  (10.3) 
1910.608            283?97             129^27 
.627            284.10            129.21 
.660            284.15             128.97 

1909.69               46.7               21.66 

From  the  five  positions  by  'S,  A,  HI  and  P  (1829-1909),  the 
proper  motion  of  A  is  : 
o"o44    in    8i?5 

Although  it  is  practically  certain  that  B  is  fixed,  I  have 
measured  a  third  star. 
B  and  C  (12.0) 
1909.666            io6?i                26^42 
.703            107.1                26.58 
.706            106.0                26.42 

1910.63              284.07             129.15 

Presumably  the  proper  motion  of  about  o"o3  is  in  A.    This 
will  appear  from  later  measures  of  C. 

10007£.    Lalande  38760.    (7.1...  9.  6) 
R.  A.  20"  7™  49"        Decl.—  i  "14' 

A  and  B 
1907.523              82?!                63^9  1 
.562              81.9                64.84 
.578              81.7                64.28 

1909.69              106.4                26.47 

10022.     22655-    (7-  5-.-  7-5) 
R.A.2o"8ln5o'        Decl.  +  21°  52' 

A  and  DM  (21°)  4110(9.  2) 
1910.529            I52?6o              59"i8 
.548            152.90              59-10 
•  551             153-00              59-68 

I907-55                81.9                64.34 

1908.575              82?28              64"92 
.594              82.18              64.68 
-597              82.58              64.57 
.613              82.30              64.54 

1910.54              152.83              59-32 

The  only  other  measure  of  this  is  by  South  : 
1825.65            I50?2           57"32           3"            S 

As  he  calls  it  very  difficult,  and  the  distances  differ  i"4, 
there  is  probably  no  change. 

1908.59               82.33              64-68 

17 


253 


Burnham:   Measures  of  Proper  Motion  Stars 


10033.     3  Capricorni.    P  294.     (5. 7... 14.0) 
R.  A.  20*  9™  44'       Decl.  — 12°  42' 

A  and  B 

1912.678  34?6  26*94 

34-o 
36.1 


.695 
.698 


26.98 
26.89 


1912.69      34.9       26.94 

From  the  three  positions  by  A  and  P  (1891-1912)  the  proper 
motion  of  3  Capricorni  is : 

0*030    in     II7?7 

Further  measures  of  the  faint  star  will  reduce  the  error  in 
the  value  given.  The  meridian  positions  make  the  components 
of  the  movement  very  uncertain: 

Auwers         0*020    in    275^6 

Boss  0.015    in    169.0 


10040.    P  983.     (6.  i...  10.2) 
R.  A.  20"  iom  ii'       Decl.  +  25°  14' 

A  and  C  (12.0) 
1912.581  83!20  115*24 


.583 
.619 


83.17 
82.83 


115.87 
116.35 


1912.59 


83.07 


115.82 


For  the  proper  motion  of  the  close  pair.  No  other  measures. 
The  only  proper  motion  found  for  the  large  star  in  the  star 
catalogues  is : 

Boss     0*003    in    233?6 


10044.    22658.    (7.0...  9.  i) 

R.  A.  20'  iom  29"        Decl.  +  52°  45' 

A  and  B 


1911.449 
.471 
.487 


"5?4 
116.9 
114-8 


5*77 
5.36 
5-65 


1911.47  115.7 

A  and  C  (10.2) 
1911.449  209? 38 

•471 

.487 


210.00 
209.80 


5-59 

46*08 
46.10 
46.25 


I9H.47 


209.73 


46.14 


From  the  measures  of  AC  on  15  n  by  2,  A,  Hu  and  P  (1832- 
1911)  the  proper  motion  of  A  is: 

0*187    in     13°.B 

The  apparent  motion  of  A  from  the' measures  of  AB  on  20  n 
by  2,  A,  HI,  Hu  and  P  (1831-1911)  is: 
0*013    in    2I3?8 

Therefore  the  real  motion  of  B  is : 
0*175    in     I2?3 

A  system  of  the  61  Cygni  type. 


Some  of  the  determinations  of  the  proper  motion  of  A  from 
meridian  positions  are : 


Groombridge 

Porter 

A.  G.  Harv. 

Bossert 


o"i75  in 

0.152  in 

0.169  m 

0.166  in 


i6?6 
8.2 

l5-° 
15.8 


10048.     H  2944.     (8.4...II.8) 
R.  A.  20"  iom  39'        Decl. +60°  i' 


I9H-37S 

•  392 

•  395 


191:2 

190.5 
190.9 


25-25 
25-57 
25.21 


1911.39 
No  other  measures. 


190.9 


25-34 


10054.     a'  Capricorni.    H  607.     (4. 5... 9.0) 
R.  A.  20"  i  im  o'        Decl.  — 12°  53' 

A  and  C 
1911.468  221 ?35  45*01 


•  471 

•  509 
.529 


220.90 
222.03 
221.05 


45.18 
44.72 
44.99 


1911.49  221.78  44.97 

Comparing  this  with  my  measures  in  1879,  we  have  for  the 
proper  motion  of  a'  Capricorni: 

0*025    in    74?5 

Some  of  the  values  from  meridian  positions  are: 
Auwers  0*014    in    328?4 

Newcomb    (Stand.)          0.005    in      48.7 
Newcomb  (F.  C.)  0.014    >n      69.1 

Boss  0.016    in      67.7 

The  measures  of  both  companions  should  be  continued. 


10057.     a1  Capricorni. 
R.  A.  20"  i  ira  24"       Decl.  —  12°  55' 

A  and  D  (10.7) 
1909.512  I56?92 


•  SIS 
•531 


I56.97 
156.83 


155  •  16 
I54.76 


1909-52 


156.91 


154.86 


From  this  and  the  P  measure  of  1879,  the  proper  motion  of 
the  large  star  is  : 

0*053    in    50?6 

This  from  meridian  positions  is  given: 

Auwers          0*040    in    71?! 
Boss  0.059    in    85.1 

Newcomb       0.045    in    89.6 

The  measures  of  the  faint  star  should  be  continued. 


254 


Burnham:   Measures  of  Proper  Motion  Stars 


10061.    A.  G.  251.     (8.6...IO.O) 
R.  A.  20"  iim  51'        Decl.  +  5°  49' 


1908.575 
•  597 
.633 


i85?4 
185.0 
186.0 


7:20 
7-25 
7.30 


1908.60 


185.5 


7-25 


No  evidence  of  motion.    The  distance  given  in  G.  C.  Part  I 
is  much  too  large. 


10064.     Ho  588.     (6. 5... 8. 3) 
R.  A.  20"  I2m  7s        Decl. +  31°  8' 

A  and  B 
1907.523  297?32  50^96- 


•  597 
.638 


297.13 
297.28 


50.84 
50.94 


1907.59              297.24  50.91 

B  and  C  (12.0) 

1907.523      I7?p  8?79 

•597      17-5  8.60 

.638      15.2  8.74 


1907.59      16.9 

Early  measures  discordant. 


8.71 


10077.    P  661.    (5. 7... 12. 4) 
R.  A.  20"  I2m  39"        Decl.  +  40°  o' 

A  and  B 
1912.583  64?g  12^85 


.638 


65-3 


12.68 


1912.61 


65-1 


12.76 


There  may  be  a  little  diminution  in  the  angle  since  1878. 
As  the  proper  motion  of  the  bright  star  is  doubtful,  I  have  con- 
nected a  faint  star. 

A  and  €(13.3) 

1912.583  2i8?o7  iii''42 

.638  217.10  112.04 


1912.61 


217.58 


"1-73 


Auwers 

Boss 

Kustner 


o'/o68  in  o8?5 
0.012  in  169.2 
0.022  in  113.5 


10085.    x  Cephei.    22675.     (4.0... 8.0) 
R.  A.  20"  12™  56"        Decl.  +  77°  2 1' 

A  and  C  (10.1) 
1912.255  336?6o  169732 


•274 
.206 


336.63 
336.55 


169.48 
169.41 


1912.27  336.59  169.40 

The  small  star  appears  to  be  DM  (77°)  763  (9.5). 


From   the   Astrographic  Catalogue,   using   scale   value   of 
3Oo"o,  we  have : 

1895           336?3  170"!            Greenwich 

The  proper  motion  of  v.  Cephei  is  given : 

Auwers  o"oi8    in    24^3 

Newcomb  0.027    in     17.7 

Boss  0.029    in    25.5 


10100.    22666.     (6.  5...  8.  7) 
R.  A.  20"  13"  52'        Decl.  +  40°  21' 

A  and  C  (9.2) 

1908.537     207?6      34"22 
.556     208.0      34.30 


•  559 


208.0 
206.8 


34.44 


Gla 


1908.55  207.5  34-32 

The  distance  by  Tarrant  is  too  small. 

1894.59  207?4  34^27  2n 

The  proper  motion,  if  any,  of  the  large  star  is  small : 
Boss     o"oi2    in     162^7 


10104.     \  Capricorni.     (4. 9...  11.7) 
R.  A.  20"  14™  o"       Decl.  —  13°  8' 


1908.537 

•  573 

•  575 

•  594 


210.25 
209.80 
210.18 


53.90 
54-24 

54-22 

53-6r 


1908.57 
1911.471 
•  500 
-529 


210.07 
209.63 


53-99 

54"  1 5 
54-21 
53.89 


I9H-50 


209.78 


54.08 


The  four  positions  by  (3  on   ion  (1877-1911)  give   for  the 
proper  motion  of  v  Capricorni: 

0*042    in    2i6?8 

Further  measures  should  be  made,  as  the  first  of  these  is  on 
a  single  night. 

The  meridian  positions  leave  the  amount  and  direction  of 
the  movement  uncertain : 

Auwers         o!'o24    in    257?9 
Boss  0.018    in     156.7 

Newcomb      0.014    in    266.8 


10133.     Arg.  38.     (9.8...io.o) 
R.  A.  20"  15™  25'        Decl.  —  20°  37' 


1906.755 
7-675 
7-695 


272?8 

273.7 
273.8 


I7"30 
17-45 
17-43 


1907.37  273.4 

Probably  without  change. 


17-39 


255 


Burnham:   Measures  of  Proper  Motion  Stars 


10135.    22671.    (6.0...  7.  4) 
R.  A.  20'  is™  27'        Decl.  +  55°  i' 
A  and  C(i2.8) 

IQH-37S             54°  10             84740 
•392             55.87             83.50 
.395             54-90             83.73 

10168.     v  Cygni.    0  665.     (2.  2.  ..io.  5) 
R.  A.  20"  i;"1  55"       Decl.  +  39°  52' 

A  and  EC 
1911.414            ig6?i8            141^49 
.430            196.38            141.48 
.449            196.25            141-13 
.471            196.18            141.20 

I9".39               54.96             83.88 
For  the  proper  motion  of  AB.    C  has  a  very  faint  companion. 
C  and  D  (14.1) 

I9II-395             I20°9                  5"50 
.414            114.6                  5-27 
.471             120.4                  5.46 

1911.44             196.25            I4I-33 

From  the  four  positions  of  the  small  star   (1878-1911)   we 
have  for  the  proper  motion  of  v  Cygni: 
07034    in    338?4 

The  proper  motion  given  in  Part  II  of  the  General  Cata- 
logue belongs  to  another  star.     The  several  results  derived 
from  meridian  observations  are  contradictory  and  uncertain. 
Auwers  (F.  C.)               o7oi9    in    356^5 
Auwers  (cor'd)                 0.008    in    321.0 
Newcomb   (Stand.)          0.022    in     108.4 
Newcomb  (F.  C.)            0.004    in      80.  i 
Boss                                    0.003    in     159-0 

While  it  is  practically  certain  that  there  is  no  motion  in  BC 
which  would  affect  the  value  given,  I  have  connected  a  very 
faint  star: 
BC  and  D  (12.8) 
1911.449            I34?73              40776 
.471             133.63              40.98 
.487            133-85              40-99 

1911.43              118.6                 5.41 

The  proper  motion  of  A  is  small  : 
Groombridge       o"o32    in    204?! 
Boss                    0.021    in    199.0 

10137.    H2954-     (9.5...  9-5) 
R.  A.  20"  ism  30'       Decl.  +  19°  25' 

1909.381            302?7                 2748 
.400           305-3                 2.97 

1909-39             304.0                2.72 

About  y3°  nf  H  2954  is  h  2075.    The  central  star,  from  which 
the  measures  are  made,  is  faint  and  difficult.    This  is  Dreyer 
6905. 
,         h  2075  and  star  n.gm 
1909.381             i62?9                36789 
.400            164.0                36.83 

1911.47              134.07              40.91 

10171.     H  1510.     (8.5...  8.8) 
R.  A.  20"  i8m  31"        Decl.  +  47°  23' 

A  and  B 
1908.573            I50?2                4:65 
8.575            150.4                4-Si 
8.594            M9-9                4-52 

9-400               i|S.S                     4.45 

9.438            150.3                4.54 

1909.39              163.4                36.86 

h  2075  and  star  lo.om 
1009.381            358?2                46777 
•400            359.0                46.16 

1909.39              358.6                46.46 
The  last  was  measured  at  the  Lick  Observatory  : 
1891.60           3S7?6           46768           2n           0 

10144.    Ho  456.    (8.0...  13.0) 
R.  A.  20*  i6m  18'        Decl.  —  27"  7' 

1906.755            2io?4               14707 
7.695           211.4               14.39 

1908.92                    !.)•).<)                        4.53 

A  and  C  (12.6) 

1908.573           34i°7                6770 
8.575            342.2                6.53 
8-594           343-0                6.46 
9.400           340-6                6.37 

1908.78             341.9                6.51 

A  and  D  (11.2) 

1908.573            323°3                3i732 
•  575            322.3                31-24 
.594            322.1                31-08 

1907.22             210.9               14.23 
Probably  unchanged. 

10162.     H  1505.     (8.  3...  10.  9) 
R.  A.  20"  17"  10"       Decl.  +  43°  12* 

1907.463            iog?6               17^14 
.465            109.9               16.87 
.482            109.8               17.13 

1908.58              322.6                31.21 
H  1511  is  in  the  field. 

H  1510  and  H  1511 
1909.400            121^05             57724 
.438            120.90             57.37 

1907.47             109.8               17.05 
No  early  measures. 

1909.42               uo.97               57.30 

256 


Burnham:   Measures  of  Proper  Motion  Stars 


10177.    H  1511.    (n.  i.  ..ii.  5) 
R.  A.  20"  18'"  38'        Decl.  +  47°  23' 

1909.400           239?6               io"67 
.438           241.0               10.  60 

10183.     Lewis  34.     (10.4...  10.  6) 
R.  A.  20"  19™  ±        Decl.  +  42°  45'  ± 

1908.537            I74°9                 4"40 
•556            175-9                 4-44 
•573             173-8                 4-43 

1909.42             240.3               10.63 
No  other  measures. 

10180.    O2(App.)207. 
R.  A.  20"  18°  47'        Decl.  +  42°  36' 

A  and  C  (6.  5.  ..7-7) 
1908.537              63?33              94"02 
•SS6              63.32              04.00 
•573              63.43              93-73 

1908.56              174.9                 4-42 

These  stars,  too  faint  to  be  in  the  DM,  are  about  6'  n  of  the 
S./m   star,   DM  (42°)  3725.     This   does   not   agree  with  the 
description  by  Lewis  in  magnitudes,  or  distance  which  is  given 
as  i"55.    As  nothing  else  could  be  found  in  this  vicinity,  there 
must  be  a  large  error  in  the  place,  or  in  the  measures. 

10189.    22680.     (8.3...  8.  5) 
R,  A.  20"  19"  14'        Decl.  +  14°  29' 

1906.755            288?o               isl'oo 
7.465            288.2               16.11 
7.482           288.0               16.17 

1908.56                63.36              93.92 

In  G.  C.  Part  II,  p.  1082,  in  the  proper  motion  of  A,  for 
i':o86  read  o"o86. 
The  four  sets  of  measures  of  C  now  available  (1876-1908) 
give  for  this  motion  : 
0^083    in    53  ?6 

From  meridian  positions  : 
Kustner       o"o6i     in    56^2 

While  C  is  a  bright  star,  there  is  no  reason  for  supposing  that 
it  has  any  sensible  proper  motion.     For  greater  certainty,  I 
have  measured  the  faint  star  D. 

C  and  D  (l3-3) 
1908.537             i62?24              57"5i 
.556            164.37              57-6o 
.573            163.80              57-20 

1907.23             288.1               16.06 
No  relative  motion. 

10194.    P  1134-     (5-8...  12.  7) 
R.  A.  20"  I9m  29"       Decl.  +  63°  36' 

1907.463             8o?o                4"23 
8.482             80.0                4.09 
8.520             80.6                4.34 

1908.15               80.2                4.22 

The  only  other  measures  are  my  own  in  1889. 
I  do  not  find  any  proper  motion  given  the  large  star;  not  in 
Boss  or  Groombridge. 

10196.     22681.     (7.  3...  10.  8) 
R.  A.  20"  I9m  35"        Decl.  +  53°  2' 

A  and  B 
1910.548              41  ?o                 6?57 
•551              40-1                  6.37 

1908.56              163.47              57-44 

10182.     22679-     (7-4-.-  8-  7) 
R.  A.  20"  18"'  59"        Decl.  +  19°  11' 

A  and  B 

1910.490              78?  55              22^94 
.493              78.22              22.96 
.509              77.63              22.72 

I9I0.55                40-5                  6.47 

A  and  C  (8.0) 
1910.548            20i?8o              4o"20 
.551            201.65              40-02 
.570            201.70              40.40 

1910.56              201.72              40.21 

C  and  D  (n.o) 
1910.548            ioi?53             22^50 
.551            101.98             22.53 
.570            101.73             22.88 

1910.50                78.13              22.87 

A  and  C  (10.1) 
1910.490            152?  15              38"oo 
•  493            152-38              38.71 
.509            151.40              39-02 

1910.56             101.75             22.64 

It  is  evident  from  the  measures  of  CD  that  D  has  no  proper 
motion.    The  measures  of  AC  by  ^,  A  and  P  (1831-1910)  give 
for  the  proper  motion  of  AB  : 
0*029    in     119?! 

1910.50              151.98              38.88 

No  other  measures  of  C.     About  40'  «/>  is  the  interesting 
object,  h  2075.    This  was  measured  at  the  Lick  Observatory; 
central  star  not  seen  here.      (Pub.  L.  O.  II  p.  166.) 

257 


Burnham:   Measures  of  Proper  Motion  Stars 


10199.    H  1513.    (8.  4...  ii.  5) 
R.  A.  20"  I9m  48'       Decl.  +  46°  8' 

1910.512           326?!               13*87 
•  529           327-6               13-69 
.548           326.3               13-97 

10235.    H  1516.    (8.0...  10.7) 
R.  A.  20"  22™  26'        Decl.  +  54°  1  7' 

1907.329             148?!                4/''i7 
.348            148.2                47.13 
.463             147.7                46.96 

1910.53             326.7               13.84 
No  other  measures. 

10216.     S749.     (7-0...  7-4) 
R.  A.  20"  21"  14'       Decl.  —  2°  30' 

A  and  C 
1908.441            3i6?52             43"S6 
.479           316.43             43-55 
.482           316.48             43.67 
.518           316.02             43.73 

1907.38              148.0                47.09 

No  other  measures.    A  12.  5  m  star  about  the  same  distance 
in  204°.    A.  G.  Harvard  gives  the  principal  star  a  proper  motion 
of  0*031  in  270°. 

10240.     Ho  131.     (7-8...  11.  2) 
R.  A.  20"  22m  49'       Decl.  +  18°  23' 

A  and  C  (10.7) 
1007.329              8i?25              99*62 
.348              81.39              99.41 
.444              80.87              99.77 

1908.48             3'6.36             43-63 

C  and  D  (10.6.  .  .10.7) 
1908.441            240^25             77*35 
.482           240.50             77-23 

1907.37                81.17              99.60 

1910.490             8o?78             98*66 
.509             80.90             98.65 
.529             80.80             98.37 

.518           239.42             77.06 

1910.51               80.83             98-56 

1908.48             240.06             77.21 
There  is  a  13.5  m  star  near  C,  I97?5=  I9"8. 

1912.504             8o?68             98"  i  i 
•507             79-93             97-93 
•545             80.87             98.54 

A  and  D 
1908.479           266?23             07"59 
.482            266.33             97-44 
.518           266.55             07.11 

1912.52               80.49             98.19 

My  measures  of  this  (1903-1910)  give  for  the  proper  motion 
of  A: 
0*380    in    103?! 

1908.49             266.37             97-38 

D  and  ^(13.6) 

1908.479             2i°7                 5"78 
.482             21.5                 5-78 
.518             19.1                 5-8o 

The  measures  should  be  continued  for  a  final  value.    From 
meridian  observations  : 

A.  G.  Berlin     0*384    in    iO9?3 

1908.49               20.8                5.79 

We  have  the  following  of  two  of  these  stars  : 
AC         1891.79       3I4?02         44:87       2n       Eng 
AD         1891.79       266.25        100.37        m       Eng 

If  the  early  measures  had  been  made  on  a  greater  number 
of  nights,  the  result  of  a  comparison  with  the  present  meas- 
ures would  be  more  accurate. 

10264.    p  363.    (7-0...  11.  o) 
R.  A.  20"  24™  28'       Decl.  +  20°  12' 

A  and  B 

1911.373             64?95              I7"49 
.392             64.86             17.49 
.395             64.60             17.70 

AC       R.  A.—  0*130       Decl.  —  0*024 
AD                    0.178                    0.024 

1911.39               64.80             17.56 

—  0.154                —  0.024 

Hence  the  most  probable  proper  motion  of  A  is  : 
07156    in    261?! 

A  and  C  (11.7) 
I9II-373            20o?o8             45f62 
.392            199-30             45-39 
-395            199-45             4S-67 

The  meridian  positions  give: 
Porter           0*148    in    245*3 
Boss              0.104    'n    230.8 

1911.39             I99-6I             45-56 

The  several  measures  of  both  companions  should  give  the 
proper  motion  of  the  principal  star  with  great  accuracy. 

258 


Burnham:   Measures  of  Proper  Motion  Stars 


From  the  six  positions  of  B  on  16  n  by  Doo  and  (5  (1878- 
1911),  and  the  four  positions  of  C  by  fj  on  nn  (1900  to  1911) 
we  have  : 
AB        R.  A.  +  o:'io6        Decl.  +  o':o8i 
AC                    0.092                    0.087 

10315.     a?  Cygni.    8756.     (5-O...9-7) 
R.  A.  20"  27™  36'       Decl.  +  48°  49' 

1912.675            323°05              57"34 
.678            323.02              57.38 

+  0.099                +0.084 

Therefore  the  proper  motion  of  A  is  : 
o"i30    in    49?7 

No  motion  found  in  the  star  catalogues. 

10289.    p  668.    (6.2...  11.7) 
R.  A.  20"  25-"  49'        Decl.  —  10°  16' 

A  and  C 
1908.633            io8?23            ioo"os 
.636            198.40            ioo.li 
.652            198.00            100.54 
.671            198.30            loo.oo 

1912.67              323.03              57.36 

There  are  three  other  stars  within  this  distance  from   A. 
Comparing  the  recent  measures  of  B  with  the  single  measure 
of  OS  in  1840  gives  for  the  proper  motion  of  the  large  star  : 
Measures      o"osi     in    201  ?5 
Auwers         0.042    in     160.9 
Boss              0.037    in     164.7 

10320.     2  2697  rej.     (7.  5-.-  9-5) 
R.  A.  20"  28'"  13'        Decl.  —  o°  53' 

I9H.545                i°7                30"32 
-564                i-3                30.33 
•567                1.2                30-57 

1908.65              198.23            100.18 

1911.449            io8?6o            ioo"72 
.468            198.67            100.30 
.545            198.70            100.54 

1911-56                  1-4                30.41 

The  apparent  change  in  distance  from  the  measure  of  1848 
is  probably  not  real. 

1911.49             198.66            100.52 

These  measures  of  the  io.4m  star  are  made  in  the  interest 
of  the  large  proper  motion  of  AB. 

Bonn               o''309    in    67^7 
Auwers           0.309    in    72.1 
Porter             0.305    in    66.2 
Paris               0.234    in    61.4 
Boss                0.316    in    73.1 

10325.     H  1535.     (8.0...  ii.  6) 
R.  A.  20"  28™  32'        Decl.  +  32°  58' 

A  and  B 
1008.537            2.47?4                i6rp2 
•  573            246.3                16.77 
.575            246.8                17.09 

10298.    to2  Cygni.    P  669.     (5  .  5  ...  13  .  5) 

R.  A.  20"  26™  20'        Decl.  +  48°  33' 

1908.56              246.8                16.93 

A  and  C  (11.6) 
1908.537             I53?2                i8':54 
•  573             I54-I                18-62 
•  575            154.2                18.65 

A  and  B 
I909-570            341  °4                i8fo7 
•592            339-8                17-87 
.666            340.9                18.13 

1908.56              153-8                18.60 

The  proper  motion  given  A  seems  to  be  doubtful,  at  least  in 
amount.     The  distance  of  B  should  have  increased  about  l" 
since  1902. 

1909.61              340.7                18.02 

A  and  C  (10.0) 
1009.551              86?is              56^20 
.570              86.62              56.54 
•573              86.35              56.22 

Bakhuyzen      o"i68    in    47?5 
10335.    DM  (5°)  4556.    (8.  6...  10.  5) 

1909.56                86.37              56-32 

No  change  in  AC,  and  probably  none  in  AB  as  the  first 
position  depends  on  a  single  night.    It  is  therefore  probable 
that  the  large  star  has  no  sensible  proper  motion.    The  results 

R.  A.  20"  29ra  14"        Decl.  +  5°  42' 

1908.597              52^25              57':oo 
.633              51-83              57.99 
.636              51.50              57.96 

from  meridian  observations  are  contradictory  : 
Groombridge       o"o24    in      94^8 
Auwers                0.042    in     160.8 
Boss                     o.oio    in      65.9 

1908.62                51.86              57.95 

Large  proper  motion.     (See  General  Catalogue,  Part  II.) 
ofsos    in     I35°3 

259 


Burnham:  Measures  of  Proper  Motion  Stars 


10367.     71  Aquilae.    0  672.     (6.0...  12.  5) 
R.  A.  20'  32™  8'       Dec!.  —  i°  31' 

1912.408            28i?2                31:85 
.411            282.5                32.02 
.465            283.8                31.00 

10378.    2  2705.    (7.  i.  ..8.  i) 
R.  A.  20'  32™  57'        Decl.  +  32°  57' 

A  and  C(ii.3) 
1909.400           341  ?oo            182773 
.458           341-28            183.46 

1912.42              282.5                3L92 

.493           341-15            183-39 

If  71  Aquilae  has  any  proper  motion,  it  is  very  uncertain 
from  the  meridian  observations  : 
Auwers         0^005    in    257?5 
Boss              0.028    in     154.4 

Further  measures  of  the  faint  star  are  necessary  to  deter- 
mine the  real  movement  of  the  large  star. 

10372.    T  Capricorni.    Hu  200.    (5.  5...  6.  8) 
R.  A.  20"  32m  34'       Decl.  —  15°  22' 

AR  nnH  ("*  (  11  7^ 

1909-45             34LI4            183.19 

Apparently  no  proper  motion  : 
1880.15           34i°85            i82:'93           2n            Bl 

No  change  in  AB. 

10383.    Hn  39.     (8.0...  10.8) 
R.  A.  20"  33"  7*       Decl.  +  50°  28' 

1908.520            176^0                7762 
-537            175-2                 7-61 
•  559            177-4                 7-93 

1912.507            272?27             158742 

.564                272.53                158.22 
.583                272.56                159.09 

1908.54              176.2                  7.72 
No  change  since  1881. 

1912.55                  272.45                158.58 

No  other  measures.    The  proper  motion  of  the  large  star, 
if  any,  is  very  uncertain. 
Auwers        o".O2i    in    235?3 
Newcomb      0.029    in     176.3 
Boss             0.023    in    161.8 

10386.     i  Aquarii.    H  2984.     (5-5---"-5) 
R.  A.  20"  33™  10"       Decl.  +  o°  4' 

A  and  B 

1909-515            2i9?63             57796 
.534           219.25             58.40 
.570           219.35             58.19 

10373.    48  Cygni.    2  53,  App.  I.     (6.0...  6.1) 
R.  A.  20'  32-  39'       Decl.  +  31°  9' 
A  and  B 

1909.54             219.41              58.18 

A  and  C  (11.4) 
1009.515              36^65              70775 
-534              37-24              70.89 
-570              37-60              70.99 

1911.200             vS-OS             I79-77 
.302             175.64             179-74 
•334             I7S-54             I79.76 

1909-54               37-i6              70.88 
From  the  measures  of  these  two  small  stars,  we  have  for  the 

1911.31               I75.6I             179.76 
The  four  positions  by  2,  A  and  fJ  (1835-1911)  give  for  the 

proper  motion  of  i  Aquarii: 
AB        R,  A.  +  o7oo8        Decl.  +  0^026 
AC                    0.115                    0.006 

oTo37    in    225?8 

The  proper  motions  from  meridian  positions  are  discordant  : 
A        o7o57    in    238?5        Auwers 
0.009    >"     188.1        Boss 
B        0.062    in    216.8        Auwers 
0.069    in    228.2        Boss 

For  determining  hereafter  the  real  motion  of  A,  I  have  con- 
nected a  very  small  star. 

A  and  a  (12.7) 
1911.280                l?6s              71733 
.302               0.88             70.80 
-334                '-47              7I-5I 

+  0.106                +0.016 

Measures      o7i07    in      8i?4 
Auwers         0.078    in     105.0 
Boss              0.094    in      99-2 

10390.     v.  Delphini.    0X533.     (4.7---"-3) 
R.  A.  20"  33m  19'       Decl.  +  9°  40' 

1908.671            3oo?6               17^50 
.673           300.3               17-43 
.689           301.6               17.46 
.692            300.2               17.53 

1911.31                  1-33              7'-2i 

1908.68             300.67             17.48 

260 


Burnham:   Measures  of  Proper  Motion  Stars 


The  proper  motion  of  v.  Delphini  from  the  measures  of  the 
small  star  (1852-1904)  is  given  in  the  General  Catalogue: 

Measures  of  B      o"3i2    in    8s?8 
Auwers                  0.298    in    86.5 
Newcomb              0.314    in    87.0 
Boss                       0.315    in    87.8 

10401.     a  Delphini.     p  298.     (3.9.  ..) 
R.  A.  20"  34m  4'        Decl.  +  15°  29' 

A  and  B  (13.5) 
1911.526            225?2                30^37 
.545            223.8                29.98 
.564            224.9                30.63 

10402.     22708.     (7.0...  8.  7) 
R.  A.  20"  34m  7'        Decl.  +  38°  13' 

A  and  B 
1909.512            328?47             29^65 

1911.280            329^42              3o"33 
•334            329-00              30.23 
•373            329-28              30.05 

I9II-33              329.23              30.20 

From  ten  positions  by  'Z,  O2,  A,  Du,  HI  and  ft  on  31  n  (1829- 
1911)  the  proper  motion  of  the  principal  star  is: 

0^256    in     I36?4 

A  and  D  (10.3) 
1909.458            217^85             H3".42 
.493            217.90  ,         113.62 
.512            217.57            113.62 

1911.54              224.6                30.33 

A  and  C  (12.0) 

1911.526            279?55              43"78 
•  545            279.50              43.67 
.564            279.60              43.88 

1909.49              217.77             "3-55 

The  only  other  measure  is  : 
1880.08           214^17            H5"o7           2n           Bl 

The  proper  motion  of  the  principal  star  from  the  measures 
of  D  is  therefore  : 

From  meridian  positions  : 
Porter  0^242    in     I38?7 

A  and  C  (13.  5) 
1911.334              I3?3                :6"70 
•373              14-0                17-13 
•395              13-5                16-79 

1911.54              279.55              43-78 

A  and  D  (13.0) 

1911.526            I5i°35              47"H 
.545             151.68              47.54 
.564            iSi-43              48.00 

1911.54              I5I-49              47-56 

A  and  E  (12.7) 
1911.526            308?  12              5i"32 
•  545            307.70              51-77 
.564            307-47              51-67 

I9II-37                13  -'6                16.87 

From  the  four  measures  of  C,  the  proper  motion  of  A  is  : 
o"295    in     I3O?2 

Of  course  this  should  be  identical  with  the  result  from  AB, 
but  when  the  difficulty  of  the  object,  the  short  time  covered  by 
the  measures,  and  the  further  fact  that  two  of  the  positions  are 
from  a  single  night,  are  taken  into  account,  the  agreement  is 
all  that  could  be  expected. 

10426.     22717.     (7.  2...  9.  7) 
R.  A.  20"  35™  19"        Decl.  +  60°  20' 

A  and  C  (9.7) 
1908.633              52?83              4s:'oo 
.636              53-20              45.65 
.652              52.83              45-67 

1911.54              307-76              51-59 

A  and  F  (10.8) 
1911.526             ii4?68              79"&4 
•  545             "4-93              79-24 
.564            H4-73              79-17 

1911.54              114.78              79.42 

From  the  measures  (1877-1911)  the  annual  motion   of   the 
large  star  is  : 

AB        R.  A.  +  0^065        Decl.  +  0^043 
AC                     0.057                      0.017 
AD                     0.033                      0.006 
AE                     0.032                     0.043 
AF                      0.053                      0.024 

+  0.048                 +0.027 

Therefore  the  corrected  proper  motion  of  a  Delphini  is  : 
ol'oss    in    6o?7 

From  transit  observations  : 

Auwers           o"o46    in    oo?o 
Newcomb       0.070    in    76.2 
Boss                0.064    >n    97-2 

1908.64                52.95              45.74 

The  only  other  measure  of  AC  is  that  of  1898  given  in  the 
General  Catalogue. 

261 


Burnham:   Measures  of  Proper  Motion  Stars 


10429.    H  2987.    (10.5 

...10.7) 

10446.    H  2990.    (9.  6.  ..12.  i) 

R.  A.  20"  35™  33'       Decl. 

+  19°  36' 

R.  A.  20*  36'"  48'        Decl.  —  20°  57' 

1009-573            "5°6 

10761 

1907-675            3o8?9               19765 

.589            116.5 

10.63 

•695           309-7               19-45 

1909.58             116.0 

10.62 

1907.68             309-3               19-55 

No  other  measures.    Other  small  stars  near. 

This  is  SD  (21°)  5807  and  not  SD  (20°)  as  printed  in  the 

General  Catalogue.    No  other  measures. 

10437.    49  Cygni.    2  2716. 

(6.0...  8.  2) 

10447.    22718.     (7.  4--  -7-6) 

R.  A.  20"  36"  ii1       Decl. 

+  31°  53' 

R.  A.  20"  36™  52'        Decl.  +  12°  18' 

A  and  B 

A  and  C  (12.0) 

1908.671              86?5                8745 

1912.351             9i°83 

68^63 

.673             86.9                8.46 

•353             90.86 

68.00 

.689             86.1                 8.95 

?Qs\                  f\i   nft 

68.26 

.  joy                  yi.Lio 

1908.68               86.5                8.62 

1912.36          91.26 

68.30 

A  and  C  (8.0) 

No  other  measures  of  the  small  star. 

The  proper  motion  of 

1908.671            345°70            166799 

49  Cygni  is  given  : 

.689           345.38            167.07 

Auwers        o7oi8    in 

154-5 

.692           345-36            167.09 

Boss              0.018    in 

176.0 

1908.68             345-48            167.05 

No  change  in  AC  since  1889. 

10441.    Ho  595-     (7-0 

.  .12.2) 

10459.    p  674-    (8.0...  10.  8) 

R.  A.  20"  36™  33'       Decl. 

+  22°  33' 

R.  A.  20*  37™  53'        Decl.  —  2  1  °  19' 

1907.638            I09?6 

17727 

.675            in.  2 

17.64 

1907.788                 I02?9                         1748 

-731            109-7 

17.29 

7.807            103.8                 1.70 

8C77                   IO2    7                           I    <m 

1907.68             110.2 

17.40 

«0/O                     *M«./                                ••'fj 

1908.06                      I03.I                            1.54 

Probably  unchanged. 

No  material  change. 

10443.    Hn  40.     (8.6 

..8.9) 

10468.     H  1566.     (12...  13) 

R.  A.  20"  36"  34'        Decl. 

-  19°  55' 

R.  A.  20*  38'"  12'       Decl.  +  12°  4' 

1909.760           '  i8?3               is"i7 

A  and  B 

.782             20.2               15-24 

1907.675            356°o 
.692            355-7 

57o8 
5-32 

1909.77               19-2               15-20 

.695            357-6 

5-14 

No  other  measures.    Herschel's  estimated  angle  is  70°. 

1907.69             356.4 

5-i8 

The  declination  of  H  1566  in  Part  I  of  the  General  Cata- 
logue is  5'  too  large,    h  2086  is  the  object  referred  to  in  H 

C  and  D  (9.1..  .10 

o) 

(IV). 

1907.675            i87?7 

4"32 

H  1566  and  h  2086 

.692            186.0 

4-43 

1909.760           336?8               3°7i6 

.695            189.9 

4-27 

1907.69             187.9 

4-34 

10474.    H  2992.    (9.  5...  9  -7) 

A  and  C 

R.  A.  20*  38™  23'       Decl  .—  20°  50' 

1907.675            257?7 

143:66 

.692            257-7 
.695            257.7 

144.04 
143-92 

1907.675             I39°5                  2?78 
.695            136.8                 2.59 

1907.69              257.7 

143-87 

1907.68             138.1                 2.68 

No  certain  change  since  1881. 

Change  uncertain. 

262 


Burnham:  Measures  of  Proper  Motion  Stars 


10476.     51  Cygni.    P  675-     (5-5-  •  -13-0) 
R.  A.  20"  38™  31'       Dec).  +  49°  54' 

A  and  C  (12.0) 
1911.602            i8i?i                26"os 
.663             184.2                25.81 
.698            181.3                26.43 

AB  and  a  (10.6) 
1911.583            n8?35             62'foo 
.602            118.90             62.60 
.625            118.83             62.79 

1911.60             118.69             62.76 

Perhaps  a  little  change  in  the  angle  of  both  distant  stars. 
The  magnitudes  of  the  close  components  vary  from  8.7  and 
9.0  (Dembowski)  to  7.5  and  7.5  (Aitken). 

10512.    e  Cygni.    P  676.     (2.  5...  12.0) 
R.  A.  20"  41™  21"        Decl.  +  33°  31' 

1908.652           2o8?63             4o"88 
.655            298.18              41.09 
.671            298.25              40.74 
.673            298.62              40.69 

1911.65              182.2                26.10 
A  and  D  (12.0) 
1911.602            329?  9                33"40 
.663            329.1                33.54 
.698            328.6                33-02 

1911.65              329.2                33.32 

Further  measures  of  C  and  D  are  necessary  for  a  safe  value 
of  the  proper  motion  of  51  Cygni. 
From  meridian  observations  this  motion  is  uncertain  : 
Auwers           o"o3i     in    93^7 
Boss                0.007    in    90.0 

10477.     Arg39.     (8.4...  8.6) 
R.  A.  20"  38™  42"        Decl.  +  48°  50' 

A  and  B 
1909.515            iis?o                9l'52 
•  534            "5-7                9-38 
•551            iiS-4                9-53 

1912.296            116.6                9.65 
.351            117.6                9.47 
•353            117-1                 9-38 
The  mean  results  are: 
1909.53            ns°4           9^48           3n 
1912.33           117.1            9.50           3n 

B  andC  (12.5) 
1909.515             I24?8                31^23 
.534            126.5                30.98 
.570            126.0                30.61 

1912.296             125.4                31-34 
•  351             125-9                30-98 
.353             126.2                31.04 

The   measures   of   BC   show   conclusively  that  the   proper 
motion  is  all  in  the  larger  star. 
1906.52            I26?5           3i"o2           2n           P 
1909-54            125.8           30.94           3n            P 
1912.33            125.8           31.12           3n            p 

From  the  (3  measures  of  AB  on  :6n  (1903  to  1912)  we  have 
for  the  proper  motion  of  the  principal  star  : 
o"i32    in    30?s 

10487.     P  64.     (8.7...  9.0) 
R.  A.  20"  39™  18'        Decl.  +  12°  if 

AB  and  C  (7.3) 
1911.583             I57°25              96"68 
.602            157.60              96.60 
.625            157.43              96.38 

1908.66              298.42              40.85 

The  proper  motion  of  e  Cygni  from  nine  sets  of  complete 
measures  (1852  to  1908)  is: 
o"504    in    48?7 

From  the  star  catalogues  : 
Auwers           o"48i     in    46?5 
Boss                0.483    in    48.2 
Newcomb       0.491     in    48.5 

10525.     Hn  41.     (8.  5...  12.  3) 
R.  A.  20"  42m  5'        Decl.  +  53°  35' 
A  and  B 
1908.671            235°!                  3'-55 
•  673            236.4                 3-6"3 

1908.67              235.7                  3-59 
A  and  C  (n.o) 
1908.655            26o?9                 8".z6 
.671            262.4                 8.14 
.673           261.4                8.01 

1908.67             261.6                8.14 
Probably  fixed. 

10526.    H  2998.     (9.  5...  9.6) 
R.  A.20b42mi8'i        Decl.  —  21°  5' 

A  and  B 
1907.695            141  ?4                5?8o 
8.573            140.4                6-18 
8.633            141.7                6.09 

1908.30             141.2                 6.  02 
A  and  C  (10.6) 

1908.633            I33°23              99"i7 
.636            133-07              99-04 

1908.63              I33-I5          •    99-io 

The   principal   star   is    SD  (21°)  5839  (8.7).     There   is   no 
relative  change  in  AB.     To  verify  the  alleged  large  proper 
motion,  I  have  connected  a  third  small  star. 
Porter           o"4OO    in     I3O?2 
Bossert         0.392    in     140.0 

1911.60              157.43              96.55 

263 


Burnham:   Measures  of  Proper  Motion  Stars 


10533.     X  Cygni.    02413.     (5.0...  6.  3) 
R.  A.  20"  42"  44'    Decl.  +  36°  3' 

AB  and  €(9.3) 
1912.427            ios?io             «4".S& 
.430            105.17             84.80 
.465            105.15             84-95 

The  prior  measures  are  : 
1886.93           8i?is            109734           2n            Eng 
1894.36           81.39           108.64           2n            Eng 

The  proper  motion  of  the  principal  star  is  : 
Measures  of  C      o"o78    in    34°4 

The  measures  of  both  companions  should  be  continued. 

1912.44              105.14             84.88 

C  is  DM   (35°)  4269.     Nothing  can  be  inferred  as  to  the 
proper  motion  of  the  close  pair  from  the  meridian  positions. 
Some  of  the  results  are  : 

Auwers  (F.  C.)        0^022    in    323^3 
Auwers  (cor'd)          o.oil     in    280.4 
Newcomb                   0.012    in    118.1 
Boss                            0.012    in     161.7 

From  the  measures  of  the  small  star  on  13  n  by  O2  and  P 
(1852-1912),  the  corrected  proper  motion  of  X  Cygni  is: 

o?oo8    in    95?5 

Some  of  the  results  of  meridian  positions  are  : 
Paris                o"l22     in    31^0 
Porter             0.113    'n    26-° 
Auwers           0.106    in     18.6 
Boss                0.114    in    32.7 

10555.     22731.     (7.  7...  10.  8) 
R.  A.  20"  44"'  31'        Decl.  +  39°  21' 

A  and  B 
1906.906             88?s                 4?oi 
.964             88.2                 4.10 

It  is  at  least  probable  that  A  and  B  constitute  a  system  of 
the  61  Cygni  type. 

1906.93               88.3                 4.05 

A  and  €(13.2) 
1906.906            I73?o               I7''36 
6.964            175.0               17.11 
7.312            171.9               17.20 

10535.    T)  Cephei.    (3.  5...  11.2) 
R.A.201'42ln5i'       Decl.  +  6i°22' 

1907.329             40?75             8o"37 
.348             40.33             80-13 
.444             40.28             79-8i 

1907.06             173-3               17-22 

A  and  D  (13.2) 
1906.906            245?!                19725 
6.964           244.2               18.88 
7.312            245.9               19-55 

1907.37               40-45             80.10 

From  my  four  sets  of  measures  (1879  to  1907)  the  proper 
motion  of  t)  Cephei  is  : 
oT8i4    in    io!i 

The  correction  to  the  meridian  value  is  small  : 
Newcomb         o''825    in    6?9 
Auwers            0.816    in    6.7 
Boss                 0.826    in    6.7 

Later  measures: 
1910.493             4i°68             78"i2 
.509             41.30             78.37 
.512             41.25             78.07 

1907.06             245.1               19.23 

The  small  stars  measured  because  of  the  singular  discord- 
ance of  the  prior  results.     There  is  little  probability  of  any 
real  change. 
A  and  C 

1895.80           171  ?3           16^41           in           Ho 
1904.93           175-2           17-38           m           Lewis 

AandD 
1895.80           249?  o            18753            in           Ho 
1904.93           247.3           14-13           In           L«wis 

10559.     4Aquarii.    22729.     (5.  9...  7.  2) 

1910.50               41-41              78.19 
10546.     15  Delphini.     (5-5---I3-6) 

R.  A.  20"  45™  4'        Decl.  —  6°  4' 
AB  and  €(13.2) 
1912.408           3i6°83             68789 
.411            316.07             69.13 
.430           316.47             68.10 

R.A.2oll43m55i       Decl.  +  12°  6' 

A  and  C  (10.5) 
1908.383             8i?98            108704 
.422             81.70            10706 
.425             81.93            108.1  i 

1912.42             316.46             68.71 

AB  and  SD  (6°)  5603  (9-i) 
1912.408           328725            I3i"46 
.411            328.22            131.26 
.430           328.60            131-26 

1908.41               81.87            108.04 

1912.42             328.36            131  33 

264 


Burnham:   Measures  of  Proper  Motion  Stars 


The  proper  motion  of  the  binary  system  is  given: 
Auwers           o"o64    in    88?2 
Boss                0.090    in    97.0 

The  only  other  positions  of  the  SD  star  are  from  the  star 
catalogues  : 
1825           334?  i            I2s:'p           Weisse 
1893           329-S           I3I-9           A.  G.  Wein 

The  orbit  of  the  close  pair  is  wholly  uncertain,  and  likely 
to  remain  so  for  a  long  time.    A  difference  in  the  computed 
periods  by  the  same  authority  of  more  than  500  years  is  evi- 
dence on  this  point.    (See  General  Catalogue,  p.  912.) 

10570.     Espin  94.     (6.  5...  9.5) 
R.  A.  20"  45ra  51"        Decl.  +  49°  41' 

A  and  B 
1910.589              I3?02             ioo''96 
.605              12.93             10076 
.608              12.  81             100.87 

10587.     Ho  145.     (8.  7...  10.  2) 
R.  A.  20"  47™  24'        Decl.  +  34°  46' 

1907.329            310?!                  9?oo 
•351            310.7                 8.83 
.444            310.4                 8.09 

1007-37              310.4                 8.94 

Motion  in  angle  and  distance.    From  the  four  positions  by 
Ho,  Doo  and  f5  (1886-1911)  the  proper  motion  of  A  is: 
o':o82    in    88?o 

10588.     P   155-     (6.  5...  7-4) 
R.  A.  20"  47™  24'        Decl.  +  50°  58' 

AB  and  D  (11.4) 
1909.515              48?  i  i             198^24 
-534              47-98            198.61 
.551              48.01             198.05 

1909-53                48-03             198.30 

The  first  measures  are  uncertain  in  distance: 
1879.96           48?o8           20o"9i            in           Bl 
1881.43           48.37            198.73            in            Bl 

10595.     22734.     (8.  2...  8.  7) 
R.  A.  20"  48™  2i"       Decl.  +  12°  39' 

I9H.54S             I99°6                24^79 
.564            199.8                24.69 
.567             199.6                24.50 

1910.60                12.92             100.86 

B  and  C  (10.0) 
1910.589             8i?9                2^62 
-605             79-5                 2.39 
.608             78.0                2.65 

1910.60               79.8                2.55 

The  principal  star  has  no  sensible  proper  motion  : 
Groombridge      o"oo7    in    261^5 

10577.     02(App.)2ii.     (6.  5...  7.2) 
R.  A.  20"  46™  24'       Decl.  +  58°  18' 

1911.545            263^04            iog"94 
.548           262.73            109.36 
.564           263.01            109.30 

1911.56              199.7                24.66 

1  have  given  the  apparent  proper  motion  of  A   (o"m   in 
125^2)  on  the  assumption  that  B  is  fixed,  but  as  this  is  8.7m 
it  might  have  some  motion  of  its  own.    Unfortunately  there  is 
no  faint  star  near  enough  for  comparison. 

10609.     16  Delphini.    H  1592.     (5.  6...  12.  2) 
R.  A.  20"  49™  55'       Decl.  +  12°  7' 

1909.496              2o?93              38"  18 
.512              20.13              38.14 
-SIS              20.17              38.24 

1911.55             262.93            109-53 

The  change  appears  to  be  due  wholly  to  the  proper  motion  of 
B.    The  star  catalogues  give  A  no  sensible  movement.    These 
stars  are  respectively  Groombridge  3309  and  3307. 

Measures               0*171     in    6i?4 
Groombridge         0.169    in    58.2 

10586.     H  1588.     (9.6...  11.  6) 
R.  A.  20"  47™  17'        Decl.  +  62°  30' 

1910.493              33?8                i8''78 
•SO9              32.0                18.46 
.512              32.4                i8.43 

1909.51                20.41              38.19 

1911.509              2i?30              37^91 
.526              20.39              38.31 
.529              20.03              38.29 

1911.52                20.57              38.17 

The  four  P  measures  on  13  n  (1879-1911)  give  for  the  proper 
motion  of  16  Delphini: 
0^063    in    46?8 

The  value  derived  from  meridian  positions  is  too  small  : 
Auwers           o"o24    in    6s?6 
HUPS                0.044    in    74-3 

1910.50               32.7                18.56 
No  other  measures. 

265 


Burnham:   Measures  of  Proper  Motion  Stars 


10616.    7  Aquarii.    P  1034.     (6.0.  ..11.7) 
R.  A.  20"  50™  25'       Decl.  —  10°  9' 

A  and  C  (9.5) 
1912.507             66?so            176771 
.564             66.60            176.46 
.583             66.65            176.47 

We  have  from  the  star  catalogues  : 
Bossert         o"iop    in    2O4"2 
Paris             0.119    in     180.0 
A.  G.  Nico   0.075    in    180.0 
Porter           0.094    in    208.5 

10634.    p  764.    (9.0...  9.  2) 
R.  A.  20"  52™  22'        Decl.  —  9°  50' 
AB  and  C  (9.0) 

I909.SI5                  H2?30                 100^24 
•534                 112.  l8                  100.04 

.570            112.48            100.25 

1912.55               66.58            176.55 

For  the  proper  motion  of  A.    No  other  measures. 
Auwers         0^033    in    257^8 
Newcomb     o.oio    in    238.2 
Boss              0.020    in    226.5 

10621.    Ho  460.     (6.9...  12.  6) 
R.  A.  20"  so"1  54'       Decl.  +  27°  7' 

A  and  B 
1911.487             87^4               I2!'78 
•564             85.9               12.33 
.602             88.3               12.51 

I909.54              112.32            100.18 

AB  and  D  (9.0) 
1909.515              2i?so            137^12 
.534              21.67            137-08 
.570              21.52            137.48 

1909.54                21.56            137.23 

AB  and  a  (11.5) 
1909-515             oo?20             58?i6 
.534             89.90             58.30 
•  570             90.52             57.91 

I9II-SS               87.2               1254 

A  and  C  (13.0) 
1911.487            26o?7               3sTs8 
.564           260.2               35.67 
.602            259.9                35-57 

1909.54               90.21              58.12 
Change  in  the  distant  stars  doubtful. 

10640.    22738.    (7.2...  8.2) 
R.  A.  20"  52™  57'       Decl.  +  15°  58' 

A  and  B 
1909-438           254?7               isTio 
•493            254.9               15-26 
.496           255.2               15.03 

1911.55              260.3                35.6i 

No  certain  change  in  AB.     The  only  other  complete  meas- 
ures of  the  faint  star  are  : 
1906.59           26i?3           35':67           3n           Doo 

10626.    Howe  55.    (6.8...u.o) 
R.  A.  20"  51"  2'       Decl.o°o' 

A  and  B 

1906.755             7i°6               25T04 
6.813             71-7               25.78 
7.463             72.5      .         26.19 
7-4fiS             72.i               25.85 

1909-48             254.9               15-13 

A  and  C  (8.0) 
1909.493             I03?07            2io?37 
.496            103.20            210.77 

1909.49              103.13            210.57 

There  may  be  an  error  in  reducing  the  distance  by  Glase- 
napp. 
1875                io2?8           209^9                          A.  G.  Ber 
1889.67           103.1           212.09           m           Gla 

The  proper  motion  of  A  is  small  : 
A.  G.  Ber.     o".oig    in    282?o 

h  2097  and  star  12.  5  m 
1909-493            I94°9               96"66 

.496               I'M    '                    96.80 

1907.12               72.0               25.94 

1912.408             7i?5               26?35 
.411              71.4               26.12 
.430             72.0               26.35 

1912.42               71.6               26.27 

If  the  principal  star  has  the  proper  motion  given  in  the 
General  Catalogue,  the  companion  is  moving  with  it,  as  there 
has  been  no  relative  change  since  1879.    To  test  this  hereafter, 
I  have  connected  a  third  small  star  : 

A  and  C  (13.2) 
1912.408            ii8?6               36*05 
.411            118.8               36.30 

1909.49              >"l  :               96.73 

This  is  about  50'  sf  2  2738. 
1886.67           io8?6           0^46           in           Eng 

As  this  is  derived  from  differences  in  R.  A.  and  Decl.,  change 
is  not  to  be  inferred. 

1912.41              118.7               36.17 

266 


Burnham:   Measures  of  Proper  Motion  Stars 


10642.    Ho  598.    (8.0...  12.0) 
R.  A.  20"  S3m  o'        Decl.  +  28°  49' 

1911.348            m?3                17^33 
.564            112.  2                17.58 
.583             112.  i                16.98 

10663.    Lalande  40682.    (6.0...  8.  8) 
R.  A.  20"  54™  58"        Decl.  +  18°  52' 

1912.675            334°23              46"i8 
-678            333-83              46-21 
•695            333-53              46-38 

1911.56              in.  9                17.30 

The  measures   are   discordant   in   distance,   and   change   is 
uncertain. 

10643.     eEquulic.    22737.     (5.  7...  6.  2) 
R.  A.  20"  53m  5s        Decl.  +  3°  So' 

AB  and  D  (12.8) 
1912.465            278?63             77!'o8 
.504           278.67             77.03 
.507            278.73             77.20 

1912.68              333-86              46.26 

One  of  these  stars,  and  presumably  the  larger,  has  some 
proper  motion.     The  three  sets  of   measures,   on  8  n  (1880- 
1912),  give  for  the  movement  of  Lalande  40682  : 
o''os7    in     i8i?7 

The  only  value  found  from  meridian  positions  is  the  follow- 
ing: 
Boss      0^075    in    2o6?9 

10670.    S9Cygni.    22743-     (4-7..-9.0) 

RA   2o"^mAA*           Decl    +47°    V 

1912.49             278.68             77.10 

For  the  proper  motion  of  AB.    This  is  given: 
Auwers         o"2O4    in    227?! 
Stumpe          0.202    in    227.7 

A  and  C  (11.5) 
1912.427             I4i?o                26*42 
.430            141.0                26.48 
.465             140.8                26.88 

10648.    H  928.     (9.  2...  ii.  6) 
R.  A.  20"  53™  25'        Decl.  +  2°  12' 

I906.75S              8i?5                14^57 
6.813              82.9                14.95 
7.578              81.4                15.19 

1912.44              140.9                26.59 

No  change  in  AB.    The  measures  of  the  small  star  must  be 
continued  for  the  proper  motion  of  59  Cygni.     This  is  un- 
certain from  the  star  catalogues  : 
Auwers         o"oi3    in    134^4 
Boss              0.008    in      67.2 
Newcomb      0.017    in     108.6 

1907.05                81.9                14.90 

The  change  shown  by  the  Cincinnati  measure  of   1879  is 
probably  explained  by  a  large  error  in  that  distance. 

10681.     H  1605.     (10.7...  ii.  3) 
R.  A.  20"  56™  37'        Decl.  +  54°  i' 

1909.378                 I20?5                      20?00 

10.490            119.7               20.60 

10659.     22741.     (6.0...  7.  3) 
R.  A.  20"  54™  39'        Decl.  +  50°  o' 

1909.93              120.  i               20.75 

H  1606  and  H  1605 
1909.378            2I9?3              2o8"76 
10.490            219.3              208.82 

and  C  (11.  0) 

1909.493            3S6°37            139*52 
.496            356.40            I39-40 
•512            356.53             139-49 

1909.93              219.3              208.79 

No  other  measures.     (See  No.   10687  for  measures  of  H 
1606.) 

1909-50              356.43             139-47 
The  first  measures  are  discordant  in  distance: 
1879.98           356?62            140701            in            Bl 
1880.34           356.32            138.83            in            Bl 

The  large  star  has  no  certain  proper  motion  from  meridian 
positions  : 
Groombridge       o"on     in    242?7 
Boss                     0.018    in      25.7 

10685.     22744.     (6.  3...  7-o) 
R.  A.  20"  56™  58'       Decl.  +  i°  4' 

AB  and  C  (12.8) 
1912.675             ioi?35              87^36 
.678            102.52              87.78 
.695             102.00              87.64 

There  is  a  faint  star  about  10"  from  C. 

1912.68              101.96              87.59 

267 


Burnham:   Measures  of  Proper  Motion  Stars 


For  the  proper  motion  of  the  close  pair.    The  relative  motion 
in  the  large  stars  is  in  the  position-angle.    For  the  movement 
of  A  we  have  : 
Stumpe         oTi66    in    24S?8 
Bossert         0.175    in    250.0 
Paris            0.177    in    242.0 

10687.    H  1606.    (9.0...  11.  o) 
R.  A.  20"  57°  5'        Decl.  +  54°  4' 

A  and  B 
1009.342            i85co               i8"6i 
.378            186.1               18.51 
.458            186.2               18.33 

This  planetary  nebula  is  about  20'  sp  Ho  462.     The  prior 
measures  are: 

1890.74           343°5           96:38           3n            p. 

10719.    O2(App.)2i4.    (5.  7...  8.0) 
R.  A.  20"  59™  23'        Decl.  +  41°  9' 

A  and  B 
1911.334            l8s°39              57"42 
.373             185.12              57.17 
.302             185.14              57.37 

1911.36              185.22              57.32 

B  and  C  (12.2) 

I9IL373            241^68            107:28 
.392            241.94            107.31 

1909.39             186.0              18.48 

H  1606  and  h  2099 
1909.378           336^48             54"  i  5 
.458            336.45             54-41 

1911.38              241.81             107.30 

As  A  and  B  appear  to  have  a  common  proper  motion,  I  have 
connected  a  faint  star  for  an  independent  value  of  this  move- 
ment.   From  meridian  positions  this  is: 
Boss             ol'osi    in    I77?5 
Kustner        0.056    in     196.3 

10725.    22754.    (8.0...  8.7) 
R.  A.  21"  o™  29'       Decl.  +  12°  42' 

A  and  B 
1909.589           30i°i2             32:38 
.592            301.30             32.20 
.630           301.47             32.49 

1909.42             336.46             54-28 

The  last  measures  connect  the  principal  star  of  H  1606  with 
the  principal  star  in  h  2099,    The  greatest  length  of  the  nebula 
is  about  89"  in  the  direction  of  25°. 

10695.    H  1607.     (8.0...  10.  5) 
R.  A.  20"  57m  36'       Decl.  +  6i°  i' 

A  and  B 
1009.342             8s°5               10^36 
•493             84.3               10.13 
•531              85.2               10.15 

1009.46               85.0               10.21 

There  is  a  decided  motion  in  angle  and  distance  from  the 
proper  motion  of  A.    This  from  the  measures  (1873-1909)  is: 
0:062    in    233  ?9 

For  verification  a  third  star  is  connected. 

A  and  C  (11.3) 
1909.342            333?65             84:67 
•493            333-17              84.97 
•  531             333-70              85.05 

1909.60             301.30             32.36 

As  the  components  do  not  differ  greatly  in  magnitude,  the 
proper  motion  may  be  in  either.    The  apparent  motion  of  A  is  : 
0:031    in    329?  o 

To  determine  this,  I  have  connected  a  third  small  star. 

A  and  C  (n.8) 

1009.589           225?  12            149:99 
.592            225.50            149.51 
.630           225.10            150.14 

1909.46              333-51              84-90 

10703.    Ho  462.    (7-8...  8.8) 
R.  A.  20"  58"  27'        Decl.—  1  1°  34' 

1909.458           2is?6                2?59 
.493            216.7                 2-50 
.512            215.2                 2.44 

1009.60             225.24            149.88 

10727.    p  157.    (6.7...  10.7) 
R.  A.  2i°o™3i>       Decl.  —  14°  24' 

A  and  C  (12.0) 
1908.504             67?o               10:05 
.636             66.1                 9-76 
.671             67.3               10.  16 
.673             67.1               10.03 

1909.49             215.8                2.51 

No  change. 
h  2098  and  star  13  m 

1909.458            343°°               06:80 
•493            343-8               95.49 
•  5«            343-2                96-85 

1908.64               66.9               10.00 

From  the  measures  of  C  to  1904  the  proper  motion  of  A  is: 
0^364    in    94?3 

1909-49              343-3               96.38 

268 


Burnham:   Measures  of  Proper  Motion  Stars 


From  the  star  catalogues : 

Porter  o''339  in  go'o 

Paris  0.328  in  90.0 

Radcliffe  0.308  in  97.5 

Hedrick  0.440  in  90.1 

10737.    22755.    (6.7...  10.3) 
R.  A.2i"  i™  24'       Decl.  —  o°  39' 


1906.755 
7.482 
7.523 


82?2 
82.2 
82.6 


24.17 
24.22 
24.04 


1907.25 

No  change  since  1827. 


82.3 


24.14 


10743.    p  158.    (7. 3... ii. 8) 
R.  A.  21"  im  37"        Decl.  +  47°  19' 


1909-534 
•  570 


313.7 

313-3 


10.78 


1909.55 


313-5 


10.62 


In  the  following  measures  of  the  double  nebula  in  the  field 
(Dreyer  7026),  the  central  point  was  taken  for  comparison 
with  the  stars. 

Nebula  and  star  io.5m 

I909.534  64?!  26"8s 

.570  64.0  26.58 


1909.55  64.0 

The  earlier  measures  are: 

1879.57  63?8  2S:'2 


26.71 


1891.69 


66.8  26.2 

Nebula  and  star  13. 2m 
1009.534  3i5°5 


in 
in 


P 
Eng 


•  570 


3I5.6 


48.79 


I909.55  315.5  48-85 

Nebula  and  star  13.  4m 
I909.534  323°i  53"o8 


•  570 


322.2 


53.13 


1909.55  322.6  53.10 

From  differences  in  R.  A.  and  Decl. : 

1891.69  3i9°9  5i"9  m  Eng 

This  is  presumably  the  brighter  of  the  two  stars. 

10747.    P68o.    (8.  i... 8. 6) 
R.  A.  21"  im  52"        Decl. +  53°  n' 

AB  and  C  (10.7) 
1908.597  33°4  22^75 


.636 

.652 


33-2 
33-1 


22.85 
22.78 


1908.63  33.2  22.79 

Distance  may  be  decreasing.    No  material  change  in  the  close 
pair. 

18  269 


10775.     22763.     (8.5... 9.7) 
R.A.2ib3m52"        Decl.  +  16°  52' 


1907.559 
-578 
.581 


293°7 
293-0 
293-0 


17.06 
17.30 


1907.57  293.2  17.19 

Measures  discordant,  and  relative  motion  uncertain. 


10782.     Y  Equulei.    P  71-     (4-7...H.O) 
R.A.2iB4m3o"        Decl. +  9°  39' 

A  and  C  (10.0) 

1912.408      s?7o  46^21 

.4"      5-57  46.11 

.427      6.23  46.30 


1912.41 


5-83 


46.21 


From  the  four  positions  of  AC  by  P  and  Doo  (1888-1912), 
each  on  3  n,  we  have  for  the  proper  motion  of  y  Equulei: 
o"i54    in     141 ?9 

Further  measures  should  be  made  for  a  final  value.    From 
meridian  observations : 

Auwers        0^170    in    169^0 
Paris  0.177    in     162.0 

Newcomb      0.179    in    162.2 
Boss  0.170    in     161.7 


10794.     22765.     (7. 8... 8.0) 
R.  A.  21"  5m  8"        Decl.  +  9°  4' 

A  and  €(13.5) 

1909.589  163^42  41767 

.592  163.13  41.41 

.630  163.30  41-85 


1909.60 


163.28 


41.64 


For  the  proper  motion  of  AB.  No  other  measures.  A  and 
B  have  a  small  common  proper  motion.  This  is  given  in  A.  G. 
Berlin : 

A        o"o22    in    297?2 

B         0.033    in    287.4 


10796.    22770.     (7.0.  ..10.5) 
R.A.2i"5m2i>        Decl.  — 3°  37' 


1910.678 
.681 
.684 


246?9 
246.4 
245.8 


7  50 
7.66 
7.78 


1910.68 

No  motion  since  1828. 


246.4 


7.65 


Burnham:   Measures  of  Proper  Motion  Stars 


10803.   22773.    (8. 2... 9.0) 

R.  A.  21"  5™  50"       Decl.  +  43°  30' 
A  and  C  (12.8) 


1909.592 
.666 
•  703 


63°9 
64.2 
63.1 


21 767 
22.00 
21.67 


1909.65      63.7  21.78 

The  only  other  measures  of  C  are  my  own,  given  in  the 
General  Catalogue. 

A  and  nebula 

1909.592             I48°8  49^40 

.666            151.3  50.26 

.703            150.0  49.42 


1009.65 


150.0 


49.69 


This  small  nebula  was  found  by  me  at  the  Lick  Observatory 
in  June,  1889,  and  has  not  been  published.  There  is  a  faint 
star  near  it,  56°:  n". 


10804.    H  1621.    (8. 6... ii. 3) 
R.  A.  21"  6™  i1        Decl.  +  54°  33' 


1907.559 
•  578 
.675 


148.2 
148.7 


19.58 
19.89 


1907.60 
No  other  measures. 


148.3 


19.76 


10808.    p  159-    (6. i... 9. 2) 
R.  A.2i"6ra2i"       Decl. +  47°  12' 

A  and  C(6.g) 
1911.334  i89°97 


•373 
•375 


189.26 
189.43 


134.72 
134.29 


1911.36              189.55  I34-55 

A  and  a  (13.0) 

1911.373             I47°7  I4"52 

.392             146.7  14.69 

.471             146.9  14.40 


1911.41 


147-1 


14.54 


No  change  in  the  large  stars.    No  proper  motion  found  in  the 
catalogues. 


10811.     H  1622. 
R.  A.  21*  6™  39-       Decl. +  54°  42' 

A  and  B  (13.5) 
1907.578  H7?6  8742 


.675 


115.6 


8.02 


1907.63 


116.6 


8.22 


This  is  a  nearer  companion,  not  previously  seen. 

A  and  C  (9-5-  •  -H-4) 
1907.559  294?9  I3?io 

•578  295.7 

.675  295.5 


13-03 
12.80 


1907.60  295.4 

No  other  measures  of  AC. 


12.08 


10827.    2  2775. 
R.A.2i"8m3o'        Decl.— i°  20' 

There  is  no  wide  pair  here  like  that  measured  at  Cincinnati 
and  referred  to  in  Part  II  of  the  General  Catalogue.  There 
is  a  pair  of  small  stars  in  the  field  sj>  ~Z  2775,  but  it  has  a  dif- 
ferent angle  and  distance. 

a  and  b  (9.7.. .10.0) 
1911.509  124^6  74(:o6 

a  and  ~Z  2775  (A) 
1911.509  2OO?2  l68"34 


10832.    22780.     (6. 2... 7. 2) 
R.A.2i"8m45'        Decl. +  59°  30' 

A  and  C(8.s) 

1009.342  2ii?55            120^89 

.400  211.65 

.458  211.35 


120.77 

121. l6 


1909.40 


211.52 


120.94 


C  is  DM  (59°)  2333.    For  comparison  we  have: 


1874 
1878.16 


2II?7 

211.54 


120.33 


211 


A.  G.  ITcls. 
Bl. 


The  large  star  has  no  certain  proper  motion  so  far  as 
meridian  positions  are  concerned,  and  this  is  confirmed  by  the 
measures  of  C. 

Auwcrs  0^017    in    241?! 

Groombridge       0.013    'n    288.0 
Boss  0.005    in    231.7 


10834.    ^  2776.    (7. 7... 9.0) 

R.  A.2i"8ra55"       Decl.  — 10°  51' 

A  and  B 


1912.810 
.813 
.867 


52.18 
51.98 


84*40 
84.21 
83.78 


1912.83  51.98  84.13 

No  change  in  BC.  The  larger  star  certainly  has  a  small 
proper  motion.  The  measures  by  2,  A  and  P,  covering  a  period 
of  eighty  years,  give  this  movement : 

o"oi9    in    354?o 


270 


Burnham:   Measures  of  Proper  Motion  Stars 


10835.    2  2779.    (8.5.. 
R.  A.  2ih9m  16'        Decl.  + 

A  and  B 
1908.594            i8o?43 
.597            180.88 
.633             1/9-97 

-8-5) 
28°  35' 

17".  1  1 
17.18 
17.10 

I  have  previously  given  in  the  General  Catalogue  the  proper 
motion  of  T  Cygni  from  the  measures  of  the  distant  star,  D 
(1851-1883). 
O2        0^474    in     I7?S 

From  the   single  measure   of   C  by   HI,   and   the  three   p 
positions,  on  ion  (1876-1911),  we  have  the  proper  motion  of 
T  Cygni: 
Measures  of  AC      0^474    in    22?2 
Measures  of  AD      0.475     in     17-8 

Some  of  the  results  from  meridian  observations  are: 
Auwers           o"46i     in     19?! 
Newcomb       0.465    in    21.2 
Boss                0.455    in    20.3 

10847.     H  1628.     (9.  4...  9.  6) 
R.  A.  21"  iora  14'        Decl.  +  32°  6' 

1907.581            252?o                I5"i3 
7-636            253.2                15.30 
8.520            253.4                I5-30 

1908.61              180.43              17-13 

As  it  is  uncertain  which  of  the  Struve  components  is  moving, 
I  have  connected  a  third  small  star. 

A  and  C  (12.0) 
1908.594              66?os              58^30 
•  597              66.75              58.19 
-633              66.37              58.38 

1908.61                66.39 

The  relative  motion  in  AB  is  : 
o"o47    in    59°  (±  180 

10838.    22778.    (8.4.. 
R.  A.  2ih9m28s       Decl.— 

A  and  B 
1907.463            273?8 
.482            274.4 
.523            274.1 

58.29 
*) 

10.6) 
-l°44' 

I9"70 
19.72 
19.64 

1907.91              252.9                15.24 
No  change  since  the  measures  of  Dembowski  in  1873. 

10862.     H  1631.     (7.2...II.O) 
R.  A.  21"  i  im  15'       Decl.  +  50°  47' 

I9II-373              J6?8s              49^21 
•  375              i6.43              48.89 
.392              17.20              49-02 

1907.49              274.1 

1909.760            274?! 
.780            273.8 

19.69 

i9"S9 
I9-SS 

1911.38                16.83              49.04 
No  early  measures. 

10866.     H  279.     (II.O...TI.O) 
R.  A.2i"iim50s        Decl.  +  11°  49' 

A  and  B 
1910.395            293^0                  5*34 
.397            293.9                 5-30 

1909.77              273.9 

A  and  C  (n.o) 
1909.780            260^63 
.782            260.92 
.802            260.87 

19-57 

7  1  "74 
72.22 
71.82 

1909.79              260.81              71.93 

Third  star  measured  for  the  proper  motion  of  A.    From  the 
measures  of  AB  this  is  : 
o'.'o37    in    2ii?5 

10846.    T  Cygni.     (4.  9...  7-  4) 
R.  A.  21"  10™  o"        Decl.  +  37°  32' 

A  and  C  (13.3) 
1911.471            230^3                28"oi 
.487            229.6                28.17 
.526            230.9                28.16 

1910.40              293.4                  5-32 

A  and  DM  (11°)  4531  (8.8) 
1910.395            294^15             I24"59 
.397            294.10            124.94 

1910.40              294.12             124.76 
No  other  measures. 

10880.    p  163.    (7.  i...  9.0) 
R.  A.  21"  I2m  47'        Decl.  +  n°  4' 

AB  and  C  (13.6) 
1908.556            242^07              28^94 
.573            242.00              28.92 

1911.49              230.3 

A  and  D 
1908.520            2io?66 
.556            210.67 
•559            210.57 

28.11 
i62:'6o 

162.83 

162.44 

1908.54              210.63 

162.62 

1908.56              242.03              28.93 

271 


Burnhain:   Measures  of  Proper  Motion  Stars 


AB  and  D  (13.0) 
1908.556            i6o?97             so7o8 
•573            160.60             50.22 

The    measures    of    the    two    small    stars  (1849-1912)  show 
clearly  that  the  proper  motion  of  v  Cygni  is  very  small  and 
doubtful.    A  long  time-base  is  required,  even  in  observations 
with  the  micrometer.    The  results  given  in  the  star  catalogues 
are  uncertain  and  inconsistent  : 
Auwers         o7c»7    in    237?! 
Boss              0.029    in     136.7 

10898.    p  1140.    (6.  7...  12.  3) 
R.A.2i»i4mi'       Decl.  +  58°  6' 

A  and  C  (12.9) 

1912.353            270^70              69779 
.408            270.83              69.99 
.411            270.34              69.85 

1908.56              160.78             50.15 

No  other  measures  of  these  faint  stars. 
The  proper  motion  of  the  close  pair  is  given  : 
Bossert         o7ig6    in    I24?2 
Porter           0.075    in     180.0 
Paris             0.134    'n     I44-4 
Kustner        0.081     in     180.0 

AB  and  E  (10.9) 
1908.520               9?O7             82776 
.556               9.04             83.06 
•559               8.87             82.67 
•573                9-20              83.15 

1908.55                  9.04              82.91 
The  measures  of  the  three  small  stars  should  be  continued. 

10881.    p  271.    (7.  2...  9.7) 
R.  A.2ihi2m49<        Decl.  —  26"  51' 

A  and  B 
1908.671            243?8                3733 
10.742           244.0                 3.37 
10.760           243.9                3-72 

1912.39              270.62              69.88 

No  other  measures  of  C.    No  proper  motion  of  the  large 
star  found  in  Groombridge,  Bradley,  Boss,  etc.     No  relative 
change  in  AB. 

10913.     H  934- 
R.  A.  21"  15™  14'       Decl.  —  9°  i/ 

H  934  not  identified;  faint  pairs  in  the  vicinity,  but  none 
answering  the  description  fully.    About  2m  directly  preceding 
the  supposed  place  of  H  934  is  h  2113.    This  is  a  little  brighter 
in  the  center. 

h  2113  and  SD  (9°)  5711  (9.3) 
1009.531            279?!              137726 
•534            279.3              137-47 

1910.04             243.9                3.47 

A  system  of  the  61  Cygni  type,  with  large  proper  motion. 
This  is  shown  in  the  measures  of  the  faint  star,  C  : 

A  and  C  (12.0) 
1908.671              72?  13             8o7o4 
10.760             72.20             82.40 

The  prior  measures  are  : 
1898.84           74?2           74757            m            3 
1899.75           72.9           75-45           4n            Bar 

The  measures  of  C  should  be  continued.    The  proper  motion 
of  AB  from  meridian  positions  is: 
Porter           0*693    in    245?3 
Paris             0.676    in    239.1 

10885.     u  Cygni.    O2  433-     (4.  6.  ..10.2) 
R.  A.  21"  12™  59-       Decl.  +  34°  24' 

A  and  B 
1912.675            2i9?3               14784 
.678           219.0               14.76 
.698           219.7               14-94 

1909.53              279.2              137.36 

The  comparison  star  has  a  small  companion  n.8m,  and  is 
the  double  referred  to  by  Herschel  in  his  note  on  the  nebula. 
1909.531              63?:                25758 
•534              62.9               25.28 

1909.53                63.0                25.43 

10917.     H  281.     (8.  7...  9.2) 
R.  A.  21"  15"  32'        Decl.  +  16°  14' 

1908.597           335?48             14711 
•633            335-50             14.02 
•636           334-70             13-90 

1908.62             335-23              14.01 
1911.392            335?4                13789 
•449            335-1                14.01 
.468            334.6                13.94 

1912.68             219.3               14-85 

A  and  C  (10.2) 
1912.675             i8i?6                2i7i6 
.678             179.7                21.39 
.698            180.0                21.45 

I9".44              335-0                13.95 

The  apparent  change  shown  by  Herschel's  measures  of  1829 
is  due  to  errors  of  observation. 

1912.68              i*.  i                21.33 

272 


Burnham:   Measures  of  Proper  Motion  Stars 


10918.     Espin  98. 
R.  A.  21"  15"  36"        Decl.  +  51°  49' 

A  and  B  (8.0.  ..9.9) 
1907.329      '<      3io?3                26^26 
•348            309-8                26.36 

10932.     i  Fegasi.    2  ii,  App.  II.     (4.  5...  8.  6) 
R.  A.  21"  i6m  32'       Decl.  +  19°  18' 

A  and  B 
1912.810            3n°i5              36"26 
.813            311-40              36-42 

.465            310.2                26.45 

1912.81              311  27              36  34 

1907.38              310.1                26.36 

A  and  C 
1907.329              87?3                29'.'7S 

A  and  C  (12.4) 
1912.810              i9°90              75"7i 
•813              20-35              75-70 

.463              87.2                30.10 

I9I2.8I                      20.  12                    75.7O 

1907.38                87.3                30.01 

C  and  D  (9.9..  .14.2) 
1907.348            261  ?o                  7"2S 
.465            262.0                 7.35 

No  other  measures  of  C.    A  and  B  have  a  common  proper 
motion  : 
Auwers           o"ii2    in    53?9 
Boss                0.117    in    60.3 

1907.41              261.5                  7-30 
No  other  complete  measures. 

10920.    22787.    (7.0...  8.3) 
R.  A.  21"  is"1  42'        Decl.  +  1°  31' 
A  and  B 

10936.     fJ  Equulei.     (5-2...I3-5) 
R.  A.  21"  i6ra  56"        Decl.  +  6°  18' 

A  and  B 
1912.755            257?o                34?35 
.791            256.9                34-67 
•793            257.7                34.04 

1908.594                   20?22                    22?72 

.597          20.32          22.53 

.633             20.17             22.68 

1912.78              257.2                34.35 
A  and  C  (11.5) 

1908.61                20.24              22.64 
A  and  C(g.8) 

1912.717            3o6?s6              69^37 
•  753            306.75              68.85 
•  755            306.40              69.40 

1908.594              94°83              70^13 
•  597              95-22              69.91 
•  633              95-23              70.41 

1912.74              306.57              69.21 
A  and  E  (12) 

1908.61                95-09              70.15 
Distance  of  C  is  larger  in  the  first  measure  of  1892.     No 

1912.717            273?28              88"78 
•  753           274-75             89.60 
•755            275.00              89.25 

change  in  AB. 

10925.    22790.    (5.  6...  9.9) 
R.  A.  21"  15™  55*        Decl.  +  58°  7' 

A  and  C  (10.2) 
1009.342            350°o8              74".i8 
•  400            350.75              73.98 
•458            350.78              74-28 

1912.74              274.34              89.21 

From  the  measures  of  the  small  stars  (1877-1912)  we  have  the 
proper  motion  of  the  large  star  with  a  high  degree  of  accuracy, 
and  this  value  is  not  likely  to  be  sensibly  changed  by  future 
measures.    In  my  measures  of  AE  in  1901  (G.  C.  Part  II)  there 
is  an  error  in  reducing  the  distance  ;  for  93^49  read  88"6s. 
The   measures   of   the  three  companions   give   the   annual 
motion  of  A  : 
AB        R.  A.  +  0^079        Decl.  +  0^052 
AC                       .099                      .030 
AE                      .098                       .049 

1909.40              350.84              74.15 

No  certain  change. 
1880.69           350?70           74"82           2n            BI. 

For  the  proper  motion  of  the  principal  star  we  have  : 
A.  G.  Hels.         0^027    in     150^7 
Boss                     0.013    in     141.7 

+  0.092                +0.042 

Therefore  the  corrected  proper  motion  of  (3  Equulei  is: 
o''ioi     in    6s?5 

This  motion  from  the  star  catalogues  is  decidedly  too  small  : 
Auwers           o"o23    in    66?7 
Boss                0.054    in    83.6 

273 


Burnham:   Measures  of  Proper  Motion  Stars 


10943.    S  788.    (7.  2...  7.  3) 
R.  A.2i"i7ra3i>       Decl.  —  7°  6' 

1906.813             88?7               45^05 
7.465             88.6               45.32 
7.482             89.0               44.92 

10966.    225,  App.  I.    (6.0...  6.  6) 
R.  A.2i"i8m57'        Decl.  +  36°  50' 

A  and  a  (n.o) 
1909.378            i55°20            I79"02 
.400            IS5.I3             178.75 
•438            155.13            178.73 

1907.25               88.8               45.10 

Proper  motion.     (See  Part  II  of  the  General  Catalogue.) 
The  positions  in  A.  G.  Ott.  give  : 
1893.3               88?7               43"3 

A  third  star  should  be  connected. 

10945.     18  Aquarii.    H  5517.     (5.  6.  ..13.1) 
R.  A.  21"  I7m  37'       Decl.  —  13°  23' 

1912.755            32i?i3             48*94 
.791            321-35             49-05 
•  793            321.30             48.77 

1909.41              I55.I5             178.83 

The  prior  measures  are  uncertain: 
1879.91            156^03            l8o"47            in            Bl 
1880.36            154.93            178.39            m           Bl. 

No  change  in  the  bright  stars.     The  distant  star  has  two 
small  companions,  the  nearest  very  faint  : 

a  and  b  (14.0) 
1909.378            i84?o                io?6o 

a  and  c  (12.8) 
1909.378            326?7                I7"8o 
.400            325.8                17.73 
.458            325-1                17.77 

1912.78             321.26             48.92 

From  a  comparison  of  this  with  my  single  measure  in  1877, 
he  proper  motion  of  18  Aquarii  is  : 
o"ii2    in    69?5 

The  measures  should  be  continued.    The  star  catalogues  give 
his: 
Auwers           0*070    in    88?4 
Boss               0.086    in    88.0 

10951.    22796.     (7.  3...  8.8) 
R.  A.  21"  17™  57'       Decl.  +  78°  6' 

1911.449             42?8s             25*42 
.509             43-00             25.30 
.529             42.83             25.34 

1909.41              325.9                17.77 

11005.    H  1647.     (6.o...ii.o) 
R.  A.  21"  23™  30'        Decl.  +  21°  39' 

A  and  B 
1912.717            I76?9               4o"8o 
•753            176.5               40.84 
•  755            177.4               4i  32 

1912.74              176.9               40.99 

A  and  C  (12.8) 
1912  .717             127  .4                4^*  20 

.753       126.0        40.86 

•755            125-7               41-26 

1911.50               42.89             25.35 

From  measures  on  32  n  by  2,  A,  HI,  Hu  and  p"  (1832-1911) 
le  apparent  motion  of  A  is  : 
0*012    in    io8?3 

Although  B  is  not  a  very  small  star,  it  is  probable  that  this 
>  the  real  proper  motion  of  A. 

10959.    H  1641.    (6.5.  ..n.  3) 
R.  A.  21*  18"  34'       Decl.  +  23°  46' 

1910.397           3»°27             52*36 
.471            312.00             52.20 
•  473            3»-30              53-64 

1912.74              126.4               41.11 

The  other  measures  are  of  late  date.     No  proper  motion 
found  for  the  large  star. 

11014.     2  Pegasi.    P  685.     (5.  5...  12.  5) 
R.  A.  21"  24™  31'       Decl.  +  23°  7' 

1907.329            332?4                29*69 
•348            332.6                29.36 
-444            33I-I                29.79 

1910.45              3II-52              52-73 

These  measures  show  that  the  small  star  is  not  moving  with 
le  other.    A  continuation  of  the  measures  will  give  the  move- 
icnt  of  A.    Other  values  of  the  proper  motion  of  A  are: 
Boss                0^125    in    8i?7 
A.  G.  Ber.      o.m    in    79.7 

I907-37              332.0               29.61 

The  measures  should  be  continued.    For  the  proper  motion 
of  2  Pegasi  we  have  : 
Auwers         o"ois    in      82^5 
Boss              0.017    in     103.6 

274 


Burnham:   Measures  of  Proper  Motion  Stars 


11025.    Schj  2g.    (9.0.  ..9.1) 
R.  A.2iB25m  n'        Decl.  —  14°  2' 

1911.564            293^28              58^82 
•  583            293-55              58.91 
.602            293.73              58.72 

11051.    22804.    (7.  3...  8.0) 
R.  A.  2ih27ra26"       Decl.  +  20°  11' 

A  and  C  (11.8) 
1912.583             ios?53              97'/oo 
.619            105.50              96.90 
.622            105.47              97-50 

1911.58              293.52              58.82 
The  only  other  measures  are  my  own. 

11026.    p  Aquarii. 
R.  A.  21"  25™  14'        Decl.  —  6°  & 

A  and  B  (11.5) 
1912.465            3i8?8                35^13 
.504            318.8                34-72 
•507            318.4                34-95 

1912.61              105.50              97.13 

It  is  uncertain  whether  the  change  in  AB  is  due  to  orbital 
or  proper  motion.     If  the  latter,  the  principal  star  is  moving 
about  o"oi4  in  240°.    The  fact  will  appear  from  later  measures 
of  the  faint  star. 

11057.     H  1657.     (8.  9...  12) 
R.A.2ih28m23"        Decl.  +  47°  57' 

I9II.449              I7°7                2i"53 
.471              17.4               21.  61 
•487             17.3               21.51 

1912.49              318.7                34.93 

A  and  C  (10.9) 
1912.465             i86?2                s6'.'33 
.504            184.6                56.44 
•  507            185.5                56.18 

1911.47               17.5               21.55 

Never  before  measured;  identified  as  DM  (47°)  3462.    The 
place  (1880)   as  given  here. 
The  cluster  referred  to  by  Herschel,  of  which  H  1657  is  a 
part,  is  h  2196. 

11077.     s  Capricorni.    H  3040.     (4.  7...  9.  5) 
R.  A.  21"  30m  22"        Decl.  —  20°  o' 

1911.663              47?n              68"24 
.698              47.00              67.98 
.720              47-35              68.25 

1912.49              185.4                56.32 

The  early  measures  of  C  are  discordant  in  distance.    From 
the  measures  of  AB  we  have   for  the  proper  motion   of  p 
Aquarii: 
o"o2O    in     I28?4 

Further  measures  are  needed  of  both  companions.    The  cata- 
logues leave  the  proper  motion  very  uncertain  in  amount  and 
direction  : 
Auwers                           o"oo8    in    277?6 
Newcomb   (Stand.)       0.021     in     142.9 
Newcomb  (F.  C.)        0.020    in     121.5 
Boss                                0.016    in     115.1 

11029.     H  3031.     (9.5...  10.  7) 
R.  A.  21"  25™  27'        Decl.  +  i°  9' 

1907.578            254?o                26'/68 
.581            253.8                27.05 
.772            252.9                26.63 

1911.69               47.15              68.16 

From  the  three  sets  of  P  measures,  each  on  3  n  (1881-1911), 
the  proper  motion  of  E  Capricorni  is  : 
o"o22    in    83?9 

The  results  from  the  star  catalogues  are  contradictory  in  all 
respects  : 
Auwers         o'.'oi3    in    256^7 
Newcomb      0.016    in     183.9 
Boss              0.009    in     103.3 

11079.     H  938.     (8.1.  ..n.  8) 
R.  A.  21"  30™  30s        Decl.  +  7°  21' 

1907.540            149^0                I7:'si 
.578            149.1                17.34 
.581             148.9                17-77 

1907.64              253.6                26.79 
No  other  measures. 

11032.    22803.    (7.  4...  9.0) 
R.  A.  21"  25™  54'        Decl.  +  52°  24' 

1908.594            287?58              24^33 
•597            288.19              24.55 
.633            287.53              24.40 

1908.61              287.77              24.43 

Change  from  proper  motion  of  A.    From  the  measures  of 
the  small  star  we  have: 
Measures             o"o24    in      74?6 
A.  G.  Harv.        0.014    'n    270.0 
Groombridge        0.025     in      80.8 

1907.57              149.0                17.54 
No  other  measures.    Herschel  gave  the  angle  :66?o. 

275 


Burnham:   Measures  of  Proper  Motion  Stars 


11103.     3  P  egasi.    2  56,  App.  I.     (6.0...  7.  4) 
R.  A.  21*  31™  45'       Decl.  +  6°  5' 

A  and  B 
1911.625            348?62             39*05 
.644           348.71              38.98 
•663           349-14             39-07 

11125.    24  Aquarii.    p  1212.     (6.  5...  6.  9) 
R.  A.  21*  33™  20s        Decl.  —  o"  36' 

AB  and  C  (10.9) 
1911.602            I45°5o              42*03 
.644            I45.70              41-77 
.663             146.11              42.04 

1911.64             348.82             39.03 

As  these  stars  have  shown   no   relative  change  in  three- 
fourths  of  a  century,  I  have  connected  a  very  faint  star  for  the 
common  proper  motion: 

A  and  €(13.2) 
1911.625            H7?io             91*07 
.644            II7-76             91-05 
.663            117.81             90.94 

1911.63              145-77             41-95 

This  will  not  sensibly  change  the  proper  motion  of  AB  pre- 
viously given  from  the  measures  of  C  to  1904. 
Measures        0*226    in    88?4 
Auwers           0.215    in    82.5 
Boss                0.236    in    86.4 

11128.    Espin  102.     (8.  i...  10.  8) 

1911.64             117.56             91.01 

The  proper  motion  of  A  from  the  star  catalogues  is  : 
Auwers          0*039    in    72?2 
Boss                0.052    in    95.5 

R.  A.  21*  33™  36'        Decl.  +  47°  57' 

1908.575              36?o                11*47 
•597             37-7               ii-30 
•613              35-3                II-39 

11107.    257,  App.  I.    (6.  5...  6.  5) 
R.  A.  2i>  31"  58'       Decl.  +  66°  12' 

Whatever  proper  motion  there  is,  is  common  to  both  stars, 
but  it  is  so  small  that  it  is  very  uncertain  in  amount  and  direc- 
tion.   From  the  Groombridge  Catalogue  we  have  : 
A        0*040    in    207°  i 
B        0.033    in    107.7 

1908.59                36-3                11-39 
The  only  other  measures  are  given  in  the  General  Catalogue. 

11129.     fJ  686.     (7.  7...  12.0) 
R.  A.  21*  33™  43*        Decl.  +  55°  13' 
AB  and  C  (8.3) 
1910.473              ii?22              4i"i7 
.509              10.93              41-23 
.529              10.13              41.22 

To  determine  this  motion  hereafter,  I  have  connected  a  small 
star: 
A  and  a  (10.5) 

1909-573            345°  15            123*68 
•589           345-32            123.38 
•592            345-22            123.74 

1910.50                10.76              41.21 

AB  and  D  (n.l) 

1910.473            283?39              41*73 
.509            282.97              41.51 
.529            283.47              41.76 

1909-58             345.23            123.60 

11115.    4  Pegasi.    H  941.     (6.0.  ..12.0) 
R.  A.  21*  32*31*       Decl.  +  5°  14' 

1909.589           335°55             26*51 
•592           335-55             26-24 
•630           335-43             26.72 

1910.50              283.28              41.67 

No  change  in  C  since  1875.    No  other  measures  of  D. 
The  proper  motion  of  the  close  pair  is  doubtful: 
A.  G.  Harv.      0*058    in    27o?o 

11147.     Espin  140.     (8.0...  13) 
R.  A.  21*  34™  42'        Decl.  +  56°  26' 
A  and  C 

l'K>.('>                     335-SI                      26.49 

The  measures  of  this  (1878-1909)  give  for  the  proper  motion 
of  4  Pegasi: 

1908.575            33T°7                "*63 
•  597           332.0               n.66 
.613           331-6               11-53 

0*142    in    77?o 

The  meridian  positions  give  : 
Auwers          0*089    in    69?7 
•                  Boss               0.103    in    84.5 

1908.59             331.8               ii.  61 

A  and  B  (14.2) 

1908.613            i82?3                 6"57 
.636            183.5                 6.62 

It  would  be  certain  that  the  motion  given  by  meridian  obser- 

1908.62              182.9                 6.60 

vations  is  too  small,  except  that  the  first  micrometer  measure 
is  on  a  single  night.    This  will  be  corrected  by  later  measures. 


The  very  faint  companion,  B,  was  detected  by  Mr.  Oliver  J. 
Lee  of  this  observatory.    No  other  measures. 


276 


Burnham:   Measures  of  Proper  Motion  Stars 


11152.    Ho  464,    (7.0... ii. 3) 
R.A.2i"34m55'        Decl.  — 15°  23' 

1908.636  I04?4  17^54 

.652 
.671 


103.6 
104.3 


17.79 

I7.8S 


1908.65 


104.1 


17-73 


The  following  measure  is  not  given  in  the  General  Catalogue: 
1906.62  io3?9  i7'/55  3n  Doo. 


11158.    41  Capricorni.    See  454.     (5. 4... 13. 5) 
R.  A.  21"  35m  ios        Decl.  —  23"  48' 


1908.671 
10.760 


199-7 
200.4 


4-50 


1909.71 


200. o 


4-85 


The  small  star  is  probably  moving  with  the  other.  The 
brilliant  compressed  cluster,  h  3128,  is  closely  preceding,  same 
declination. 

For  the  proper  motion  of  41  Capricorni  we  have: 

Auwers         o''i3o    in     I44?7 
Paris  0.210    in     157.4 

Boss  0.131     in     135.4 


11172.     H  3050.     (9. 5... 10.6) 
R.  A.  21"  35™  55"        Decl.  +  6°  35' 


1908.633 
.636 
.652 


46?! 
46.7 
46.0 


23  17 
23.10 
23-38 


1908.64  46.3  23.22 

The  distance  in  the  prior  measure  of  1895  is  much  too  large. 


11184.     76  Cygni.    8796.     (6. 2. ..9.0) 
R.  A.  21"  36™  45'       Decl.  +  40°  16' 


I909.SSI 
•  570 
•573 


231^50 
231.38 
231.13 


62.95 
62.83 


1906.56 


231.34 


62.85 


Distance  probably  increasing.  The  proper  motion  of  76 
Cygni  is  small : 

Auwers  o'.'o48    in     iog?6 

Battermann          0.053    in     193-6 
Boss  0.052    in     191.4 

If  the  Cincinnati  measure  of  1879  is  substantially  correct  in 
the  distance  of  64"26,  the  proper  motion  of  the  large  star  is 
nearly  all  in  Right  Ascension  instead  of  Declination.  The 
measures  give: 

o"o74    in    276?3 


11205.    e  Pegasi.    8798.    (2. 4. ..11.5) 
R.  A.  21*  38™  17"        Decl. +  9°  20' 


1910.395 
•397 
•  436 


A  and  B 
324°68 
324-73 
324.00 


82".  1 1 
81.98 
81.44 


1910.41  324.77  81.84 

A  and  C  (8.7) 

1910.395  320?s8  141 ''30 

•397  320.50  141.12 

.436  320.80  141.40 

1910.41  320.63  141.27 

If  the  large  star  has  any  proper  motion,  it  is  very  small  and 
uncertain  from  meridian  positions.  The  measures  of  the  two 
small  stars  show  that  it  is  practically  zero. 

Auwers         o'/oop    in      s6?o 

Newcomb     0.024    m    260.2 

Boss  0.025    in      92.3 

11207.     Hd  167.     (8.0...  13. 5) 
R.  A.  2 1"  38'"  27'        Decl. -^6°  44' 

A  and  C  (12.0) 

1910.455  36?7  "''47 

-586  35.7  11.56 


1910.52  36.2  11.51 

The  principal  star  identified  as  SD  (6°)  5814.  The  only  other 
measures  are  given  in  Part  I  of  the  General  Catalogue. 

11222.    x  Pegasi.    0  989. 
R.  A.  21"  39m  13'       Decl.  +  25°  6' 

AB  and  C  (2  2824) 

1912.526  295?9  I2"37 

.562  297.4  12-39 

.564  297.0  12.51 

.581  297.0  12.42 

1912.56  296.8  12.42 

The  proper  motion  of  the  binary  system  from  the  measures 
of  the  io.8m  Herschel  companion  (1831-1912)  must  be  prac- 
tically exact : 

o"o34    in    69?2 

From  some  of  the  star  catalogues  we  have: 
Auwers  o?O20    in    67°2 

Newcomb       0.040    in    71.7 
Boss  0.033    in    86.5 

11235.     02  (App.)  224.     (7. 7... 8. 5) 
R.  A.2i"40m3'        Decl. +  15°  12' 


1908.709 
.711 
•731 


5°50 
5-47 
5-51 


58.50 
58.56 


1908.72  5.49  58.53 

Without  material  change  in  distance,  but  the  angle  may  be 
diminishing. 


277 


Burnham:   Measures  of  Proper  Motion  Stars 


11239.     8  Capricorni.    113056.     (2.8...  12.  7) 
R.A.2i"40m24'       Decl.  —  i6°4o' 
1910.589           301  °.&2            n8"6s 

A  and  C  (13.0) 
1908.575             I2i?o                26'.'i4 
.594            121.  i                25.83 

.6l3                  121.  I                      26.19 

.608           302.00            119.81 
.627           301-35            118.89 
.678           301.93            118.24 

1908.59                    121.  I                      26.05 

There  may  be  a  slight  increase  in  the  angle  and  distance  of 

1910.63             301.78            118.00 

The  small  star  is  not  moving  with  the  other  ;  and  therefore 
it  can  be  used  hereafter  for  the  proper  motion  of  the  large  star. 
Auwers         o"37o    in    I4i?6 
Bossert         0.387    in     140.8 
Boss              0.391     in    138.9 

The  two  measures  of  the  faint  star,  with  an  interval  of  nine 

AB.    No  other  measures  of  C. 

11305.     H  5298.     (9.5--  -io.  2) 
R.  A.  2  1*  46™  4'        Decl.  —  16°  22' 

1008.636            3i2?4               6o'/76 
.671            312.3                60.17 
.673            312.2                60.43 

years,  give  : 
0:413    in     I34?3 

11241.    O2  450  rej.    (7-2...io.o) 
R.  A.2ih40m32'        Decl.  +  5°  59' 

1910.395            249?32              42"3l 
.397            249.37              42-70 
•  455            249-55              42.53 

1908.66              312.3                60.45 

Probably  fixed.     There  is  a  13.  5m  star  between  the  two, 
nearer  A. 

11315.     Ho  172.     (7.0...  12.0) 
R.  A.2i*47m5'        Decl.  +  41°  48' 
A  and  B 

1910.42              249.41              42  51 
Change  in  angle? 

1911.392             85.6               10.66 
•  395              85.5                10.44 
.430             86.2               10.19 

11270.     H  1696.     (9.5...  12.  7) 
R.  A.2i*43miii       Decl.  +  65°  15' 
1912.353            J38?6               I7"n 

1911.41               85.8               10.43 

A  and  C  (12.0) 
1911.392             5o?4               54"p2 
•  395              49-7                55-10 
.430              49.4                54-85 

.389            141-9               17-09 
.408            138.5               17-07 

1911.41                49-8                54-96 
The  measures  of  this  star  by  Doolittle  were  received  too 

1912.38             139-7               J7-09 

As  referred  to  by  Herschel,  A  of  H  1696  is  one  of  the  chief 
stars  of  h  2134;  coarse  and  scattered,  all  small  stars. 

11296.     22831.     (8.1.  ..II.  I) 
R.A.2i"45n'2i'       Decl.  +  7°  47' 

1908.845            356?o               J4"66 
9.666           35<5-8               14-37 
9.706           355-4               I4-56 

late  to  be  given  in  the  General  Catalogue.    The  change  shown 
in  the  direction  and  distance  of  C  is  confirmed  by  the  present 
measures. 
AB        1906.54       86?4        io"6o       4n        Doo 
AC        1906.67        5i-3        53-92        4n        Doo. 

There  is  no  substantial  change  in  AB.    The  measures  of  C 
give  for  the  approximate  proper  motion  of  A  : 
0*262    in    2OO?2 

A  and  DM  (41°)  4299 
1875            A  R.  A.  +  35"93       A  Decl.  +  179-3       A.  G.  Bonn 

1909.41             356.1               14  53 
Not  fully  measured  since  1866. 

11303.    22834-     (7-  3-..  10.6) 
R.  A.  21*  46"  2'       Decl.  +  18°  45' 

A  and  B 

1008.575            293-5                  4"33 
•594            293  6                 4-40 
-613            293.7                 4-44 

1911.44                    +36.43                    +189-7       P 
These  positions  imply  a  still  larger  motion  in  A. 

11323.    22840.    (6.0...  7-0) 
R.  A.  2  1  "  47m  57'       Decl.  +  55°  H' 
A  and  B 
1912.542             I95°00              I9"04 
.562            195-35              19-02 
.564            104-28              18.92 

1908.59              293.6                 4-39 

1912.55              194.88              18.99 

278 


Burnham:   Measures  of  Proper  Motion  Stars 


A  and  C(i3-7) 
1912.526            347°3°              S5"i8 
.562            347.90              55.38 
.564            348-I7              54-97 

For  the  proper  motion  of  AB.    This  from  meridian 
is  given: 
Porter           o''i64    in    232?4 
Glasgow        0.203    in    209.1 

11353.     Ho  609.     (9.  5...  9.  8) 
R.  A.  21"  50™  4s        Decl.  +  29°  9' 

1909-515             173-7                  3"°3 
.725             176.6                  3.06 

positions 
distance. 

1912.55              347-79              55  -18 

Very  little  relative  change  in  AB,  and  the  proper  motion 
must  be  the  same. 
A        o"o3O    in     I45?2        Auwers 
0.015    in      40.9        Groombridge 
0.015    in      93.7        Boss 
B        0.044    in      87.4        Groombridge 
0.045     in      67.9        Boss 

The  faint  star  is  measured  for  determining  the  real  motion 
in  A,  if  any.    B  is  Groombridge  3598. 

11327.    22838.    (6.0...  8.8) 
R.A.2ih48m2i'        Decl.  —  3°  52' 

I9I2.8IO                 l84?05                    I9''20 

.813             184.05              19.19 
.829            184.55              19-18 

1909.62              175.1                  3.04 

The  early  measures  are  singularly  discordant  in 
(See  General  Catalogue.) 

11355.     Battermann.     (9.  2...  9.3) 
R.  A.  21"  50™  7s        Decl.  +  15°  2' 

A  and  B 
1908.537            i62?s                 ^54 
.556            162.8                 1.54 
•  573             162.9                  1.56 

1912.82              184.22              19.19 

The  measures  in  point  of  time  are  sufficient  to  give  the  move- 
ment of  A  with  great  accuracy.    From  the  four  positions  on 
ii  n  by  2,  A  and  fj  (1839-1912)  the  proper  motion  of  the  large 
star  is  : 
0*030    in     i89?9 

The  bright  star  is  not  given  in  Boss'  General  Catalogue. 

11334.    22843.    (7-0...  7.  2) 
R.  A.  21"  48™  37"        Decl.  +  65°  11' 

AB  and  C  (10.5) 
1912.353            275?73              56725 
.389            276.30              56.13 
.408            276.73              55-79 

1908.56              162.7                  J-55 

A  and  C  (15.0) 
1908.556            302?2                22^83 
•573            300.2                22.87 

1908.56              301.2                22.85 

A  and  B  have  the  same  proper  motion,  while  C  is  fixed  in 
space.    Later  measures  of  this  will  give  the  proper  motion  of 
AB. 
A.  G.  Ber.      o"23i     in     141  ?2 

11359.     H  3072.     (8.  5...  10.  7) 
R.  A.  21"  50"  25'        Decl.  +  58°  53' 

1910.627              77?8                I3''20 
.660              79.4                12.95 
.666             78.2               13.00 

1912.38              276.25              56.06 

The  proper  motion  of  AB  is  small  : 
Groombridge     o''o22    in    209^7 

The  only  other  position  of  C  is  from  the  Greenwich  Astro- 
graphic  Catalogue.    With  a  scale  value  of  3Oo"o,  we  have  from 
the  difference  of  the  coordinates  : 
1895-7              275?8                56'Jo 

11346.     P75-     (8.  1...  8.  5) 
R.  A.  21"  49m  40"        Decl.  +  10°  19' 

AB  and  C  (12.5) 
1912.408            2i2?53              48^40 
.465            212.65              48.40 
.504            212.73              48.64 

1910.65               78.5               13.05 
No  early  measures. 

11364.     OS  454.     (7.0.  .  .9.0) 
R.A.2ihsom34'        Decl.  +  23°  46' 

A  and  C  (10.8) 
1908.594            264?88              43"24 
•597            265.03              43.20 
.633            264.50              43.06 

1908.61              264.80              43-17 
No  change  since  1895. 

1912.46              212.64              48.48 

279 


Burnham:   Measures  of  Proper  Motion  Stars 


11372.    02455.    (7-5--.  9.o) 
R.  A.  21*  so1"  56'       Decl.  +  15°  33' 
1912.583            2;o?4                 9^95 

.619                 271.2                       IO.22 
.622                 27O.6                        9.91 

11422.     Howe  59.     (7.0.  ..10.  5) 
R.A.2i"55mo'        Decl.  —  16°  n' 

A  and  C  (9.0) 
1910.589            29i?95             I02:'4i 
.605            292.06            102.60 
.608            291.0              102.78 

I9I2.6I                    27O.7                       IO.O3 

The  change,  if  any,  since  1847  is  confined  to  a  very  small 
increase  in  the  angle.    For  the  proper  motion  of  A  we  have  : 
Kustner     o"o39    in    190?$ 

11386.     Lewis  37.     (IO.O...ILO) 
R.  A.2ih52m±        Decl.  +  20°  18'  ± 
Not  found  in  sweeping  over  the  rough  place  given  by  Lewis. 

11393.    A.  G.  279.    (9.  6...  9.6) 
R.A.2ibS3n'29'       Decl.  +  5°  43' 

1909.438             70?7                 9"73 
.496             71-3                 9-71 

1910.60              291.7              102.60 

The  apparent  change  in  distance  shown  by  the  measures  of 
Zinner  in  1909  of  104"  is  not  confirmed. 

11427.     22851.     (8.0...  8.3) 
R.  A.  21"  55™  13'        Decl.  —  12°  34' 
A  and  B 

1912.678                 I2I?25                    l8?92 

.695            121.24             18.82 
.698            121.50             18.99 

1912.69             121.33              18.91 

The  proper  motions  of  the  Struve  stars  are  given  by  Batter- 
mann  from  transit  positions: 
A        o?o88    in      oo?o 
B         0.071     in     124.3 

As  there  has  been  no  relative  motion  since  1829,  the  motions 
of  course  are  identical.     I  have  therefore  connected  a  third 
star.    No  prior  measures. 

A  and  C  (10.0) 
1912.678            I33°6s             78?i2 
.695            134-00             78.19 
.698            134-20             77.90 

1909.47               71-0                9-72 

In  the  R.  A.  of  this  in  Part  I  of  the  General  Catalogue  for 
52™  read  53m. 

11396.    Sh  336.    (7.  5...  8.1) 
R.  A.  21'  52"  36'       Decl.  +  5°  2/ 

A  and  B 
1908.769           224?25             99"88 
.788           224.47             99-77 
.804           224.97            loo.  ii 

1912.69             133-95             78.08 

11428.    20  Pegasi.    H  289.    (5.  8.  ..11.4) 
R.  A.  21"  55m  14'       Decl.  +  12°  33' 

1908.537            324°90              52"93 
.556            324-82              53-30 
•  559           324.74             53-07 

1908.79             224.56             99.92 

One  of  these  stars  has  a  proper  motion  in  declination  of 
about  oTio.    Both  are  given  in  some  of  the  catalogues: 
1825           225?2            10377           Weisse 
1885           224.6           102.  i           A.  G.  Leip. 

To  determine  which  is  moving,  I  have  connected  a  12  m  star  : 

A  and  C 
1908.785            102^23             85731 
.788            101.15             85.24 
.824            102.33             85.42 

1908.55             324-82             53.10 

The  three  positions  of  the  companion  (1878-1908)  give  for 
the  proper  motion  of  A  : 
o"o8o    in     I22?5 

From  the  star  catalogues  : 

Auwers         0*063    in     '42?7 
Greenwich    0.068    in     136.9 
Boss              0.077    i"     136.7 

11433.    O2(App.)228.     (7.  3.  ..9.0) 
R.  A.2i*55m5i"       Decl.  +  4°  12 

A  and  B 
1912.526             26?48             76^77 

-545             26.53             76.75 
.562             26.93             76.86 

1908.80             101.90             85.32 

11401.    H  3078.     (9.  4...  9.  6) 
R.  A.  21*  52"  59'        Ded.  +  o°  42' 

1907.444            i89°4                4*54 
.465            191.5                 4.13 
.559            188.9                4-44 

1907.49             189.9                4.37 
No  other  measures. 

1912.54               26.65             76.79 

280 


Burnham:   Measures  of  Proper  Motion  Stars 


A  and  a  (12.0) 
1912.526             I59°o                24756 
•  545             158.8                24.36 
.562            159.0                24.66 

With  the  measures  by  O2  and  Hu  (1849-1908)  we  have  for 
the  proper  motion  of  the  large  star  : 
AB       R.  A.  +  07019       Decl.  —  07049 
AC                    0.017                    0.038 

1912.54              158.9                24.53 

The  change  in  AB  is  probably  due  to  the  proper  motion  of 
the  larger  star,  though  B  might  have  a  small  movement  of  its 
own.    The  measures  (1875-1912)  give  for  the  apparent  motion 
of  A: 
o7og6    in    i8o°4 

From  the  star  catalogues  we  have  : 
Paris             o7i7i     in     158?! 
Porter           0.145    in     163.2 
Boss              0.160    in    165.1 

The  continued  measures  of  the  faint  star  near  A  will  give  an 
independent  value. 

+  0.018                —  0.0435 

Therefore  the  proper  motion  of  A  is  : 
07047    in     I57?5 

11483.    ICephei.    22863.     (4.  7..  .6.  5) 
R.  A.22"omi8"        Decl.  +  64°  2' 

A  and  C  (12.7) 

1912.353             199°  59              95703 
.408            198.98              9S.6o 
.411             199.33              95-30 

11464.    P  696.    (8.0...  8.0) 
R.  A.  21"  58™  43'       Decl.  +  15°  17' 

AB  and  C  (8.3) 
1912.638           3i8?55             59-'7o 
-660           318.53             59-89 
.675            318.30             59-66 

1912.39              199.30              95.31 

The  large  stars  form  a  system  of  the  61  Cygni  type.    No 
other  measures  of  the  small  star.    The  proper  motion  of  A  is 
given  from  the  star  catalogues  : 
Auwers           0^195    in    7o?2 
Paris               0.254    in    75.1 
Porter             0.197    'n    70.4 

1912.66             318.46             59-75 

C  and  D  (9.3) 
1912.660             27?3o             8s7i8 
.675             27.62             85.30 

11499.     igCephei.    f5  697.     (6.0...  12.0) 

1912.67               27.46             85.24 

The  proper  motion  of  the  close  pair  is  : 
A.  G.  Ber.      o7o92    in    2o6°o 

C  and  D  arc  respectively  DM  (15°)  4556  and  4557.     For 

R.  A.  22"  i  m  27'        Decl.  +  6i°42' 

1912.753              92?5                19787 
•  755              92-8                19.49 
.791              92.7                19-83 

comparison  there  is  only  the  following: 
AC        1870            3i6?6       5876                   A.  G.  Ber 
1900.80        317.2        59.48        in        Doo 
AD        1870              24.5       84.6                   A.  G.  Ber 

From  a  comparison  of  the  A.  G.  position  of  C  with  the 
present  relation,  the  proper  motion  of  AB  is  : 

11472.     O246o.     (7.  3...  11.  7) 
R.  A.  2ih  59™  32'        Decl.  +  1°  12' 

A  and  B 
1908.537            347°9                 8786 
•556            347-4                 8.92 
•573            347-6                 8.72 

1912.77                92.7                19-73 

The   four   (5   positions   of   the   faint   star  (1878-1912)  show 
clearly  that  the  proper  motion  of  the  bright  star  is  substantially 
in  declination,  and  not  in  R.  A.  as  appears  from  the  meridian 
observations.    The  several  results  are  : 
Measures             o7o32    in    i86?7 
Auwers                0.081     in     114.0 
Groombridge       0.014    in      37-8 
Boss                     o.on     in      95.0 

11504.     22865.     (8.  5...  9.0) 
R.  A.  22"  i  m  45'        Decl.  +  69'  38' 
1908.655             i88?i                21727 

1908.56              347.6                 8.83 

.671             188.9                21.40 
.673             189.0                21.49 

1908.537              40°4                16775 
•556              41-3                16.73 
•573              40-3                16.73 

1908.67              188.7                21.39 

No  third  star  near  enough  to  measure.    The  apparent  motion 
of  A  from  the  measures  is: 

1008.56               40.7                16.74 

o7o88    in    47?2 

281 


Burnham:   Measures  of  Proper  Motion  Stars 


11517.    H  3092.    (8.9...  9.  5) 
R.  A.  22*  2™  53'        Decl.  —  19°  2' 

1909.725            343  °4                28*45 
.802            342.8                28.71 

Rejecting  that  from  the  above,  we  have  from  AB  and  AC  for 
the  proper  motion  of  A  : 

Measures      0*062    in    230^9 
Newcomb      0.085    in    211.9 
Auwers         0.026    in    235.0 
Boss              0.026    in    208.8 

To  aid  in  determining  whether  there  is  any  motion  in  D,  I 
have  connected  a  small  star  : 

D  and  d  (12.6) 
1909.589            29S?95             116*11 
.592            298.97            116.63 

1909.76              343.1                28.58 
No  change  since  1892. 

11518. 

This  is  identical  with  Hu  284  (No.  11515). 

11520.     Ho  470.     (7.0...  13.0) 
R.A.22h31"24>        Decl.  +  38°  47' 

1908.655            352?9                12*68 

•671             3SI-4                12.43 
.689            350.6                12.32 

1909.59              298.96            116.37 

11542.    2  2872.    (7.  2...  8.0) 
R.  A.  22"  4m  32'       Decl.  +  58°  42' 

A  and  D  (10.7) 

1909.531            152^90            "7"83 
.573            152.82             117.53 
.589            152.55            "7.8o 

1909.56              152.76            117.72 

Without  change. 
1878.83            152^82            117*33           2n            Bl 

11559.     H  1741.     (6.  2...  9.  7) 
R.  A.  22"  6m  29'        Decl.  +  50°  14' 

1908.597           3o6?98             25*94 
.636           306.60             26.06 
.652           306.23             26.20 

1908.67              351.6                12.48 

The  companion  is  very  faint. 
1906.65           353?  i            11*92           3n            Doo. 

11526.    n'  Pegasi.     (4.  3.  ..12.0) 
R.A.2/'3m54'        Decl.  +  32°  35' 

A  and  B 
1909.496            3i8?7                27*45 
•  SIS            317.8                26.95 
-534            318.7                27-43 

1908.63             306.60             26.07 

The  large  star  (Groombridge  3882)  has  some  proper  motion  : 
Measures               0*160    in    76^0 
Bossert                  0.151     in    62.5 
A.  G.  Harv.          0.151     in    62.8 
Paris                      0.181     in    71.6 
Groombridge         0.156    in    79.2 

11568.    02465.    (7.  2...  10.  7) 
R.  A.  22"  7™  17'        Decl.  +  49°  36' 

A  and  B 
1908.594            32:  ?5                14*36 
•597            321.9                14-32 
.636            321.1                14.42 

1909.51              318.4                27.28 

A  and  C  (n.o) 
1909.458            262?50             71*17 
.473            262.25             70.88 
.493            262.40             70.95 

1909.47             262.38             71.00 

A  and  D  (11.5) 
1909.458             89?o8            187798 
.493             88.97            188.18 
.496             88.90            187.96 

1909.48               88.98            188.04 

The  measures  of  these  stars  (1879-1909)  give  for  the  proper 
motion  of  the  large  star  : 
AB        R.  A.  —  0*045        Decl.  —  0*039 
AC                    0.051                     0.039 
AD                    o.ioi                    0.112 

From  this  it  would  appear  that  there  arc  large  errors  in  the 
measures  of  AD,  or  the  small  star  has  a  proper  motion  of  its 
own. 

1908.61              321-5                14-37 

A  and  C  (13.2) 
1908.597            235!  i               17*82 
.636           234.8               18.28 

1908.62             235.0                18.05 
No  other  observations  of  C. 

282 


Burnham:   Measures  of  Proper  Motion  Stars 


11583.     O.  Stone  57.     (9.  4...  10.  7) 
R.  A.  22"  6m  io"        Decl.—  20°  42' 

1907.581              97?6                 9'.'88 
.675              97-o                 9-74 
.692              96.2                  9.88 

11601.    A.  G.  281.     (8.8...  10.  o) 
R.  A.  22"  9m  9"        Decl.  +  21°  21' 

1908.711              22?o                 2*43 
.750              20.7                  2.44 
.766              20.7                 2.47 

1907.65                96.9                 9-83 

Identified  as  SD  (20°)  6379.     The  corrected  place  for  1880 
is  given  above. 

11588.     Ho  291.     (7.  2...  12.  7) 
R.  A.  22"  8m  ios        Decl.  +  48°  47' 

1908.74                      21.  1                         2.45 

11602.    02467^;.    (6.  3...  10.  3) 
R.  A.  22"  9m  10'        Decl.  +  2  1  °  56' 

1908.709            274?!                22^96 
.711           274.0              22.86 
.728           273.6              23.06 

1908.594            198.0                 9.43 
•597            198.7                10-22 
.636            199.1                  9.41 
.652            200.4                 9-74 

1908.72           273.9             22.96 
No  motion. 

1908.62              199.0                 9.70 
Change  uncertain. 

11592.    22877.     (6.  4...  9.6) 
R.  A.  22"  8m  33'        Decl.  +  16°  36' 
A  and  B 

11613.    22890.    (8.  5...  8.  7) 
R.  A.  22*  10™  26'        Decl.  +  49°  17' 

A  and  B 
1910.490              li?9                 9?47 
.509              10.7                 9.20 
.512              ii.  2                  9.26 

1910.471                5?6                I2?59 
•473               4-7               12.66 
•493               5-2               12.63 

1910.50                11.3                  9.31 

A  and  DM  (49°)  3788  (9.3) 
1910.509            277?63              72"9i 

1910.48                5.2               12.63 

.512            277.55             73-02 

B  and  C  (10.3) 
1910.471            300?43             ioo'.'92 
•473            300-62             101.22 
.493            300.75             101.02 

1910.51              277.59              72.96 
No  change  in  AB.    These  stars  form  a  part  of  /»  2155. 

1910.48              300.60            101.05 

It  is  very  improbable  that  B  has  any  appreciable  proper 
motion.    Measures  hereafter  of  the  third  star  will  show.    The 
meridian  values  appear  to  be  too  large: 
Measures  of  B      o"n6    in    222^6 
Stumpe                    0.166    in    230.9 
A.  G.  Ber.               0.157    in    236.4 
Bossert                    0.142    in    225.2 

11625.     (3  377-     (8.0...) 
R.  A.  22"  ii"1  23"        Decl.  +  54°  4' 

A  and  B  (10.6) 
1911.334              6s?49              59^23 
•  375              65.28              58.88 
•395              65.30              59.12 

11596.     Hd  170.     (9.  7...  9.  9) 
R.  A.22h8m5i"        Decl.  +  16-38' 

1911.37                65.36              59.08 

A  and  a  (13.0) 
1911.395            ii6?i                3i"84 
.411             116.0                32.07 
.468            115.8                31.80 

1908.636            241  ?s                  7?39 
.652            242.8                 7.39 
.655            242.0                 7.18 

1911.42              116.0                31.90 

A  and  b  (13.0) 
ion  IQ<            262°  z,                77"^8 

1908.65              242.1                  7.32 
The  apparent  change  from  the  Harvard  measure  of  1867  is 

.411            263.2                37.44 
.468            262.4                37.36 

not  confirmed. 

1911.42              262.7                37.39 

Burnham:   Measures  of  Proper  Motion  Stars 


A  and  d  (12.6) 

I9".39S            35«?2               57T85 
.411            358.6               S7-8o 
.468           358.1               57.80 

A  and  C  (10.0) 
1912.619            142^20            120*73 
.622             142.22             121.  18 
.638            142.00            120.00 

1911.42             358.3               57.82 

From  the  four  measures  by  0  on  ion  of  AB  (1891-1911)  the 
proper  motion  of  the  principal  star  is: 
o"258    in    ^°.g 

Comparing  the  present  measures  of  the  fainter  stars  with  the 
Greenwich  photographic  measures  in  1899  we  have  : 
Aa       R.  A.  +  oTi96       Decl.  +  0^092 
Ab                    0.205                    o/*07 

1912.62              142.14            120.94 

11659.    02469.     (7.  2...  8.8) 
R.  A.22bi5mii"        Decl.  +  34°  31' 

A  and  B 

1908.750           284^77             29*52 
.769           284.36             29.96 
.788           284.65             29.89 
.804            285.30             29.56 

+  0.200                      +0.100 

Therefore  the  approximate  proper  motion  of  A  is  : 
0*223    in    63^4 

From  meridian  observations  : 
A.  G.  Harv.         0*226    in    8i?4 
Porter  (Cinu)      0.168    in    56.1 
Porter    (Cin")     0.225    in    77.2 

11641.    22894.     (6.0...  8.2) 
R.  A.  22"  I31"  40'       Decl.  +  37°  10' 

A  and  C  (9.6) 
1908.537            '75°73            221*40 
•573            174-47            221.55 

1908.78             284.77             29.73 

From  seven  positions,  on  22  nights  (1846-1008)  the  apparent 
motion  of  A  is  : 
0*047    in     I28?4 

To  make  certain  hereafter  that  the  motion  is  all  in  the  larger 
star,  I  have  connected  a  third  12.  2m  star: 

A  and  C 

1908.750              51-43              52"90 
.788              52-37              52.92 
.804              52.43              53-61 

1908.78                52.08              53.14 

11663.     Y  Aquarii.    H  3106.     (3.  9...  12.  2) 
R.  A.  22'  is™  27'       Decl.  —  1°  59' 

1909.725             I33°78              41*09 
•  744            133-37              41.38 
.760            132.68              41.46 
.782            133.70              41.66 

I908-55              175-10           221.47 

B  and  C 
1908.556            i74°37           ao6"6i 
•559            174-24           206.51 
.575            174-62           206-73 

1908.56              I74-4I            206.63 

For  this  star  we  have: 
1880.70           I74?oo           204*83           2n           Bl 

The  measures  of  the  small  star  should  be  continued.    The 
proper  motion  of  A  is  given  : 
Boss     0*092    in    48^6 

11657.    22895-    (8.5--.IO.O) 
R.  A.  22'  15™  8'       Decl.  +  24°  21' 

A  and  B 
1912.619             36?6                8*38 
.622             36.0                8.37 
.638             36.2                8.40 

I909.75              I33-38              41-40 

From  a  continuation  of  these  measures,  the  proper  motion  of 
Y  Aquarii  can  be  found  with  a  high  degree  of  accuracy. 
Measures  to  1001        0*142    in    95?7 
Auwers                         0.102    in    85.0 
A.  G.  Nice.                  0.103    >n    80.5 
Newcomb                    0.123    in    82.9 
Boss                            0.123    in    85.8 

11669.    2  Lacertae.    111755.    (4.  6...  10.8) 
R.  A.  22"  i6m  4'       Decl.  +  45°  56' 

1912.562               9°  23             48*01 
.564               8.98             48.00 
.581               8.83             48-12 

1912.62               36.3                8.38 

The  proper  motion  given  in  Part  II  of  the  General  Catalogue 
of  A  will  not  be  sensibly  changed  by  the  later  measures  : 
0*057    in    247?8 

The  distant  star  measured  is  the  principal  component  of  a 
small  pair  in  the  field.    The  only  other  position  is  given  in  the 
General  Catalogue. 

1912.57                9.01             48.04 

No  sensible  change  in  the  small  star  since  1879,  which  would 
indicate  an  absence  of  motion  in  the  bright  star.    The  meridian 
positions  leave  the  question  doubtful  : 
Auwers               0*021    in    194^8 
Groombridge       0.025    in     182.4 
I'.'i'-s                       O.O20     in      90.0 

284 


Burnham:   Measures  of  Proper  Motion  Stars 


11674.    O2  (App.)  231.    (7.  2...  8.0) 
R.  A.  22"  16"'  37s        Decl.  +  9°  20' 

1912.810            no?io              9i''i2 
.813           110.70            90.80 
.829           110.48            90.86 

AB  and  D  (12.0) 
1912.638            igo?67            114*24 
.675            190.38            114.65 
.678            190.62            114.36 
.695            190.48            114-17 

1912.67              190-54            114-35 
AB  and  E  (10.0) 

1912.638            I32?97            131*46 
.675            132.68            132.42 
•678            133-02            132.24 
.695            133.03             132.47 

1912.82              110.43              90-93 
No  change  since  1875. 

11677.     H  1756.     (6.  7...  10.8) 
R.  A.  22"  i6m  42'        Decl.  +  40°  4' 

A  and  B 
1912.562            285^7                21*96 
.564            286.1                21.89 
.581            287.0                22.37 

1912.67              132.93             132.15 

The  only  other  measures  of  the  distant  Herschel  companions 
depend  upon  a  single  night  in  1898.     It  is  evident  from  in- 
spection that  the  proper  motion  of  51  Aquarii  is  very  small,  if 
there  is  any  motion  at  all.    The  time  interval  is  too  short,  and 
the  errors  in  a  single  measure  possibly  too  large  to  give  an 
accurate  value  for  a  proper  motion  as  small  as  this  seems  to  be, 
but  in  any  event  it  should  be  as  reliable  as  that  found  in  any 
other  way,  and  a  continuation  of  the  measures  after  the  proper 
interval  will  cure  these  defects.    Comparing  the  present  posi- 
tions with  the  single  observations  referred  to,  we  have  for  the 
approximate  motion  of  the  large  star  : 
AC       R.  A.  +  0*002       Decl.  +  0*001 
AD                +0.001                +0.005 
AE                +0.003                —0.005 

From  which  we  have  for  the  proper  motion  of  51  Aquarii: 
0*002    in    8o?6 

From  the  star  catalogues  the  results  are  contradictory  : 
Auwers        0*015    in    277?6 
Hedrick        0.019    in     124.8 
Boss              0.024    in      90.0 

11712.     Ho6i6.     (7.  2...  12.  5) 
R.  A.  22"  19"  43"        Decl.  +  21°  58' 

1909.706            356?7                !9"56 
.725            356.3                19-69 
.742            358.6                19-21 

1912.57              286.3                22.07 

A  and  C  (i3-S) 
1912.564            325^3                22"39 

A  and  D  (11.3) 
1912.562              75°95              57"86 
.564              75.27              58.35 
.581              75-35              57-81 

1912-57                75-52              58.01 
The  only  other  measures  are  those  in  the  General  Catalogue. 

11686.    02(App.)232.    (8.  4...  8.  4) 
R.  A.  22"  I7m  34'        Decl.  +  3°  14' 

1906.755            i9i°i               67*64 
7.465            191.5               67.76 
7.502            191.2               67.82 

1907.24             191.3               67.74 

1908.709            191  °53             67*86 
.711            191-23             67.97 
.728            191-15             68.13 

1908.72              191.30             67.99 

One  of  the  stars  has  a  small  proper  motion.    For  determin- 
ing hereafter  which  it  is,  I  have  connected  a  faint  star  : 

A  and  C  (11.4) 
1908.728            268?22            I75"o2 
.750            268.33             174-57 
.788            268.60            174-24 

1909.72              357-2                19-49 
The  companion  is  very  faint  ;  probably  no  change. 

11716.     34Peg<ifi.    MOO.     (6.1.  -.12.  5) 
R.  A.  22b20m3i"        Decl.  +  3°  47' 

A  and  C  (13-0) 

1911.564            27i?6o            101*34 
.583            271.60            101.13 
.644            272.23            101.13 

1908.76              268.38            174.61 

11691.     51  Aquarii.    P  I?2-     (6.  ?..  -6.  7) 

R.  A.  22"  I7m  52"        Decl.  —  5°  27' 

AB  and  C  (13.3) 
1912.638            341  °40              54"53 
-675            34I.83              54-13 
.678            341-02              54-42 
.feS            341.80              54-62 

1911.60             271.81            101.20 

For  the  proper  motion  of  the  close  pair. 
Auwers           0*259    in    8o?7 
Porter             0.259    in    81.1 
Boss                0.295    in    81.6 

1912.67              34I-5I              54-43 

19 


285 


Burnham:   Measures  of  Proper  Motion  Stars 


11732.    p  291.    (8.  4...  8.  4) 
R.  A.  22"  21™  39'        Decl.  +  3°  55' 

AB  and  €(13.5) 
1911.564             I23?8                30^49 
•  583             123.9                30.79 
.644            123.1                30.59 

11761.     Kr  60.     (9.0. 
R.  A.  22"  23™  43'        Decl. 

A  and  B 
1907.444            io7?5 
.463             108.2 
.465             109.0 
.482             109.6 

.12.0) 

+  57°  6' 

3"29 
3.38 
3-04 
3.32 

1911.60              123.6                30.62 
The  binary  system  has  little  or  no  proper  motion. 

11736.    p  701.    (7.o...io.o) 
R.  A.  22*  22°  ID'       Decl.  +  1  1  °  38' 

A  and  C  (n.o) 
1910.703            i28?45            ii8"92 
.720            128.98            119.24 
.739            128.80            119.17 

1907.46              108.6 

1908.482            io4?3 
.520            105.0 

.537            104.4 
.556            104.0 
.573            104.6 

3.26 

3"25 
3-33 
3-H 

3-20 

3.12 

1908.53              104.5 

1009.534              99°i 
.570            loo.  i 
.592              99-1 
.703              99.4 

3-20 
3"20 

3-06 
3.00 
3-00 

1910.72              128.74            119.11 

For  the  proper  motion  of  AB.    No  other  measures. 
Porter             o"i66    in    79^6 
Glasgow         0.227    in    71.8 
Paris              0.201    in    83.4 

11745.     'S.xyyjrej.     (9...IO) 
R.  A.  22"  22™  42'        Decl.  —  10°  33' 

A  and  B 

1910.742            I58?3               36"43 
.760            158.0               36.31 

•  777            157-9               36.17 

1909.60                99.4 

1910.471              97?9 

•473              95-7 
.490              96.6 
.509              94.7 

3-o6 

3"35 
3-19 
3-09 
3-09 

1910.49                96.2 

1911.411             88?8 
.468             90.5 
•471             9i-3 
.487            89.3 

3.18 

3"oo 
3-04 
3.00 

3-22 

1911.46              90.0                3.06 

The  only  sensible  change  in  AB   is  in  the  position-angle. 
The  period  will  be  uncertain  for  at  least  another  half-century, 
and  perhaps  much  longer. 

A  and  C  (9.2) 
1907.444             59?25             42^52 
.463             59.18             42.57 
-465              59-33              42.40 
.482              59.20              42.44 

1910.76              158.1               36.30 

AandC 
1910.742            229?8               47770 
.760           230.1               47.73 
.777           229.8               47-78 

1910.76             229.9               47-74 
No  early  measures.    The  magnitudes  are  from  Herschel. 

11752.    P  478.     (9  O...II.Q) 
R.  A.  22'  23"  8'       Decl.  —  7°  56' 

A  and  B 
I907-523             37°2                 i?45 
•657             32.5                 1.43 

.675                  31.5                       I.  21 

1007.46                59.24 

1908.482              59?  50 
•520              59-53 
-537              5933 
•556              59-30 
•  559             59-57 

42.48 
«:'46 

43-55 
43.48 
43-54 
43-39 

1908.53               59-45 

I909-534             59°4i 
•  570             59.52 
-592             59-01 
-630             59-Si 

43-48 

44"56 
44.34 
44-94 
44-58 

1907.62            33.7             1.36 

A  and  C  (9.0) 
1907-523            239?s               28T92 
•657           238.9               28.84 

1909-58               59.36 

1910.471              59?so 
•473              59-40 
.490              59.25 
.509              59.10 

44.60 

45"28 
45-28 
45.38 
45.41 

1907-59             239.2               28.88 

A  and  o  (13.5) 
1907-675              52°7                18^34 
The  prior  measures  are  given  in  the  General  Catalogue. 

1910.49             5-;.  3  1 

45-34 

aft 


Burnhain:   Measures  of  Proper  Motion  Stars 


1911.411              S9?3o              46*27 
.468              59.40              46.06 
.471              59.43              46.06 
.487              59.08              46.17 

11773.    O2  472  n>/.    (6.  8.  ..ii.  7) 
R.  A.  22"  25"-  6"       Decl.  +  51°  48' 

1910.698                i?6                14*49 
•701                i.o                14.55 
.703                0.7                14.34 

1911.46                59.30              46.14 

From  20  positions  of  AC  (1890-1911)  the  proper  motion  of 
A  is: 
o'.'934    in    242^5 

This  will  not  be  materially  changed  by  later  measures. 

A  and  DM  (56°)  2784 
1910.509            141  "90            200*93 
.529            142.15            200.68 
.531            142.02            200.93 

1910.70                  i.i                14.46 

The  distance  may  be  decreasing.    The  proper  motion  of  A  is  : 
A.  G.  Harv.      0*043    m    33O?7 

11778.    02473.     (6.7...IO.O) 
R.  A.  22"  25m  46'       Decl.  +  56°  37' 

1912.717            357?2                14*69 
•753            357-2                14.77 

1910.52              142.02            200.85 

1911.411             141  ?93            200*59 
.471             142.00            200.81 
.487            142.05            200.64 

1912.73              357-2                14.73 

No  change  since  1848.    No  proper  motion  found  in  the  lead- 
ing star  catalogues. 

11779.    22917.     (8.0...  8.0) 
R.  A.  22"  25™  50'       Decl.  +  52°  55' 

A  and  C  (11.5) 
1911.334            i86?6o             89*47 
.373            186.45             89.54 
.375            185.60             89.51 

1911.46             141-99           200.68 

The  motion  deduced  from  the  measures  of  the  distant  star 
of  course  should  be  exactly  the  same,  but  the  agreement  is  all 
that  could  be  expected,  considering  the  fact  that  the  interval 
covered  by  the  micrometer  positions  is  only  ten  years. 

0*920    in    246?2 

11772.     8  Cephci.    0702.     (3.0...  13.0) 
R.  A.  22"  24"  43"        Decl.  +  57°  48' 

A  and  B 
1911.411            284?6                19*67 
.468            284.7                19.62 
.471            285.3                20.30 
.487            286.0                19.74 

1911.36             186.22             89.51 

For  the  proper  motion  of  AB.     No  change  in  the  Struve 
companion. 
A.  G.  Harv.      0*007    m    9°°o 

11781.     H  1777.     (9.0...  12.0) 
R.  A.  22"  25™  54'        Decl.  +  47°  49' 

I9II-334            320?  5                11*09 
•373            319-8                11.32 
.392            318.9                11.32 

1911.46              285.1                19.83 

The  proper  motion  of  8  Cephei  is  small  ;  and,  therefore, 
from  meridian  observations  uncertain  in  direction  and  amount. 
Some  of  these  values  are  : 

Auwers                o7oio    in     151^9 
Groombridge       0.018    in     112.4 
Newcomb             0.013    in      83.6 
Boss                     0.012    in      75.9 

From  the  three  sets  of  measures  of  AB  on  gn  (1878-1911) 
we  have  for  a  corrected  and  independent  value  : 

0*017    in    77?2 

The  measures  should  be  continued  after  the  proper  interval 
for  a  final  correction. 
The  proper  motion  of  the   Struve  companion   C  (Bradley 
2972)  is  given  : 

Auwers         0*027    in     in°7 
Boss              0.028    in      69.2 

1911.36              319.7                11.24 
Evidently  an  error  in  the  Cincinnati  distance  of  1879. 

11786.    aLacertae.    fj  703.    (3.8.  ..12.0) 
R.  A.22b26m2i'        Decl.  +  49°  40' 

1912.408            294?53              34*26 
.427            296.18              34.24 
.430            295.68              34.60 

1912.42              295.46              34.37 
From  the  measures  of  the   faint  star  (1878-1912)  the  cor- 

As  there  has  been  no  sensible  change  in  AC  in  75  years,  the 
proper  motion  is  evidently  the  same  for  each  star. 


reeled  proper  motion  of  a  Lacertae  is : 
0*135    in    88?3 


287 


Burnham:   Measures  of  Proper  Motion  Stars 


From  some  of  the  star  catalogues  this  is: 
Auwers          0^133    in    85°.? 
Paris               0.149    in    87.3 
Boss                0.141     in    84.7 

11789.    2  2915.     (8.5...  8.  7) 

11814.    22920.     (7.  i...  8.  2) 
R.  A.  22°  28m  27'       Decl.  +  3°  36' 

A  and  B 

1907-523             I43°6                13*65 
.540            144.1                13.57 

-559            142-9                13-70 

R.  A.  22°  26™  33'       Decl.  +  6°  48' 

A  and  B 

1910.493            147-6               12^73 
•  529            147-2               12.39 
•  570            147-5                12.83 

1907.54              143.5                13-64 

A  and  C  (13.1) 
I907-523              64?!                2o"59 
.540              64.5                20.30 
.675              64.7                20.30 

1910.53              147.4                12.65 

From  the  measures  of  2,  A  and  (J  (1827-1910)  the  apparent 
proper  motion  of  A  is  : 
0^056    in    252^8 

No  suitable  third  star  for  the  micrometer. 
A  and  DM  (6°)  5033  (8.8) 

1875           AR.  A.3o!i8       A  Decl.  49^4       A.  G. 
1910.5                    30.08                   49.7       p 

These  observations  indicate  that  the  proper  motion  is  in  B. 

1907.58                64.4                20.40 

The  distance  of  AC  is  i"8  less  than  Hall's  in   1878.     No 
change  in  AB. 

11821.     Ho  617.     (8.0...  13.  5) 
R.  A.  22"  29™  13'       Decl.  +  21°  41' 

1907.772             53?3               17^49 
7-807             51.1                17.91 
8.518             53.9               17.62 

11794.    H  1779-    (8.3...  9-5) 
R.  A.  22"  27"  8'       Decl.  +  33°  37' 
1910.698           2i6?9               22?28 

.7OI                 2I7.O                      22.12 

.703           217.0              22.18 

1908.03               52.8               17.67 
Probably  without  change. 

11822.     H  3122.     (7...  10) 

1910.70            217.0              22.19 

Herschel's  angle  in  1828  was  244^9.   h  2172  is  4^2™  /  and  10'  n 
of  H  1779;  small  and  elongated  in  347°. 

h  2172  and  star  12.701 

R.  A.  22*  29™  22'       Decl.  —  21°  33' 

1909.802           247?44             50751 
10.627           247.38             51.02 
10.666           247.58             51.08 

ipio-739             35°5               93"2 

11798.    A.  G.  283.    (8.  7...  9.  i) 
R.  A.  22"  27"  36"       Decl.  +  54°  35' 

1910.698            336?4                 2:73 
.701            335-9                2-90 
•  703            335-3                 2.63 

1910.36             247.47             50.87 
No  other  measures. 

11823.    Hn  51.    (8.5...  8.9) 
R.  A.  22*  29™  23"        Decl.  +  1°  57' 

1910.70             335.9                2.75 

A  and  B 
1910.703             l82?8                 o"97 
.739            181.7                 0.92 

11803.     377-     (9-5...  to-  3) 
R.  A.  22"  27"  50'        Decl.  —  2°  24' 

A  and  C  (12.5) 
1912.810            227?7                27^45 
813            226  i                27  91 

1910.72              182.2                 0.94 

ABandDM(i°)4632(9.s) 
1910.701              29?25            I3i''s6 
•703             29.38            131-61 
.710             29.27            131.78 

.867            225.8                28.16 

1910.70               29.30            131-65 

1912.83              226.5                27.84 
There  may  be  a  small  decrease  in  distance. 

The  distant  star  for  the  proper  motion  of  AB. 
Boss       0^161     in    6o?3 

288 


Burnham:   Measures  of  Proper  Motion  Stars 


11824.     Arg  44-     (8.  9...  8.  9) 
R.  A.  22"  29™  23'        Decl.  +  49°  46' 

1907.463            i68?o                7^42 
.482            169.4                7.39 
.485             168.9                  7-34 

No  other  measures  of  C.    The  proper  motion  of  A  is  given  : 
Groombridge         o"o74    in    7o?3 
Boss                       0.063    in    68.5 
Schroeter              0.040    in    81.5 

1907.48              168.8                 7.38 
Without  change  since  1877. 

11828.     22924.     (6.8...  7.  3) 
R.  A.  22*  29™  33"        Decl.  +  69°  17' 

11845.    H  1791.    (7.  4...  9.0) 
R.  A.  22"  31™  2'        Decl.  +  56°  14' 

A  and  C  (ii.o) 
1910.666            150^40             84"82 
.678            150.37             84.34 
.681            150.30             84.08 

A  and  B 
1910.678              92?3                  o".6o 
.684              96.5                  0.85 

1910.67              150.36             84.41 
To  verify  the  supposed  proper  motion  of  A. 

1910.68                94.4                 0.72 

AB  and  C  (11.3) 
1910.666            I92?77            "4"79 
.681             192.80            114.26 
.684            192.80            114.01 

Greenwich     0^152    in    251^6 

11847.    Ho  618.    (7.  7-..  12.  7) 
R  A  22"  31™  32*        Decl  +  26°  6' 

1910.68              192.79            H4-35 

AB  and  D  (ii.o) 
1910.678            I94°67            178"  20 

1909.760           240^6                6"6i 
10.605            241.7                6.67 
10.627           240.6                6.53 

.681             194.60            178.78 
.684            104-27            177-85 

1910.33             241.0                6.60 

1910.68              194.51             178.28 

Distant  stars  for  the  proper  motion  of  AB. 
A.  G.  Chris.          oi'i22    in    s8?o 
Porter                    0.118    in    58.2 
Schroeter              0.114    in    63.3 

11833.     2292irej.     (9.0...  9-7) 
R.A.22h29m5i'        Decl.  —  o°  27' 

A  and  B 
1910.701            2i5?7                20"57 

Change  in  angle.     The  principal  star  evidently  has  some 
proper  motion.    From  the  three  positions  by  Ho,  Doo  and  p  or 
9n  (1894-1910)  the  motion  of  A  is: 
o"n5    in     137^8 

11848.    x  Aquarii.     (5.4-..n.o) 
R.  A.  22"  31™  32'        Decl.  —  4°  Si' 

1909.744           247^00            iooT6i 
.760           247.35            100.30 
.763            246.68            100.52 

.703            214.8                20.56 
.720            215.5                20.61 

1909.75             247.01            100.48 
No  other  measures     At  one  time  Herschel  suspected  a  ven 

1910.71              215.3                20.58 

A  and  C 
1910.701             I75°6                84^99 
.703             175-3                84.94 
.720            176.3                84.48 

small  companion  (=  H  5529)  but  this  has  never  been  seen  since 
and  certainly  does  not  exist. 
The  proper  motion  of  x  Aquarii  is  given  : 
Auwers         o'/i4O    in    219^7 
Porter           0.143    in    219.7 

1910.71              175-7                84.80 
All  the  measures  are  of  recent  date. 

11834.     22923.     (6.9...  9.  2) 
R.  A.  22"  29"'  53s        Decl.  +  69°  45' 

A  and  C  (11.9) 
1911.509            I46?35              97"38 
.526            146.13              97-05 
.529            145.95              96.51 

Boss              0.139    in    214.0 

11862.     P  1092.     (7-  5...  7-5) 
R.  A.  22"  33m  3"        Decl.  +  72°  IS' 
AB  and  C  (12.2) 
1911.526           262?o8             3i"34 
.529           261.83             3i.5i 
.545           262.40             31-43 

TOTT     C2                        146.14.                       O6.O8 

1911.53             262.10             31-43 

289 


Burnham:   Measures  of  Proper  Motion  Stars 


Rejecting  the  measure  of   1898  because   it   is  on   a  single 
night,  from  the  three  sets  of  measures  by  A  and  ($,  each  on 
3  n,  we  have  for  the  proper  motion  of  the  binary  system 
of  no    in    s8?2 


From  meridian  positions : 
Greenwich 


o7i22    in    75:7 


11866.    22928.    (8.0... 8.0) 
R.  A.  22*  33-  10'       Decl.  — 13°  H' 

A  and  B 
1908.671  311?!  3"»7 


.673 
.692 


3". I 
312.2 


3.98 
3  79 


1908.68  3"-5  3-88 

This  is  a  system  of  the  61  Cygni  type.  In  the  General  Cata- 
logue I  have  shown  from  the  measures  of  AR  (1830-1902)  that 
the  apparent  movement  of  A  is : 

o"oi8    in    24^1 

From  the  star  catalogues  we  have  for  the  proper  motion 
of  A: 

Stumpe  0*291  in  n8?7 
Porter  0.268  in  122.8 
Paris  0.275  in  125  o 

Taking  a  mean  of  the  last  two  for  the  movement  of  A,  the 
proper  motions  of  the  components  are 

A        0^272    in    I23?g 
B         0.275    in     127.5 

For  an  independent  value  of  this,  I  have  measured  a  faint 
star. 

A  and  C(i3.o) 

1908.671  245°io  07748 
.673  245-42  98.06 
.750  245.07  98.15 


1908.70 
1912.678 
.695 
.717 


245.20 

244°93 
244.30 
245.66 


97.00 

98"54 
98.94 
97-88 


1912.69 


244.96 


98.45 


11869.    H  1795.    (10.8... 10. 9) 
R.A.22b33mi8'       Decl. +  46°  43' 

A  and  B 
1910.666  2i2?8  iiTSs 


.678 
.681 


213.9 
216.6 


"•75 
11.77 


1910.67  214.4  11.79 

A  and  C  (10.9) 

1910.666  3i?6  i6"82 

.678  30.6  17.01 

.681  30.8  16.69 

1910.67  31.0  16.84 
No  other  measures ;  no  fourth  star  as  suspected  by  Hcrschel 


A  and  DM  (46°)  3/68  (8.5) 
1910.666  i87?87  I02"68 

.678  187.77  102.72 

.681  187.83  102.89 


1910.67 


187.82 


102 . 76 


11877.    10  Lacertae.    8813.    (S.O...IO.G) 
R.  A.  22"  33™  52'        Decl.  +  38°  26' 


1910.720 
•739 
•742 


48?90 
48.95 
49-25 


61.62 
61.44 


1910.73  49.03  61.47 

The  meridian  positions  are  uncertain  as  to  the  proper  motion 
of  10  Lacertae: 

Auwers         o"oi3    in      po?o 
Boss  0.009    in     180.0 

The  measures  make  the  motion  substantially  all  in  R.  A.  but 
in  the  opposite  direction.  The  measures  of  O2  and  {5,  1854 
to  1910,  give: 

ofoi4    in    26s?5 


11882.    Espinio6.    (9. 2... 9. 7) 
R.A.22h34m5'        Decl. +48°  48' 


1908.518 
.520 
•  537 


267.9 
267.3 


8"02 

7.98 
8.06 


1908.52  267.3 

No  other  complete  measures. 


8.02 


11884.    Ho  187.    (6.  i...  10.2) 
R.  A.  22"  34"  6'       Decl.  +  37°  7' 


1908.750 
.769 
.788 


286?5 

285.7 
286.2 


18.77 
18.65 


1908.77 
Probably  no  change. 


286.1 


18.78 


11895.    Ho  2o6.    (5- 5-.. 5-5) 

R.  A.  22"  34™  56'       Decl.  +  13°  55' 

AB  and  C  (11.3) 

1910.666  234?20 

.678  234.38 

.681  234-77 


68To6 
68.22 
68.26 


1910.67 


234-45 


68.18 


For  proper  motion  of  AB.  This  from  the  catalogues  is : 

Porter  0^290    in    6s?3 

Glasgow  0.304    in    60.5 

Paris  0.288    in    64.5 


290 


Burnham:   Measures  of  Proper  Motion  Stars 


11905.    \Pegasi.     (3.S-.-H-0) 
R.  A.  22"  35'"  38'        Decl.  +  10°  12' 

1907.657             I3§?93              62^92 
.675             139-18              63.70 
.692             139.05              63.42 
.695             I39-98              63.16 

A  and  C 
1911.526            182^02            i6i"88 
.529            182.00            162.06 
.545             182.45             162.68 

1911.53              182.16            162.21 

C  is  SD  (5°)  5842.    The  meridian  positions  give: 
1890.7           i8i?6           i62:'6           A.  G.  Stras. 

11910.     12  Lacertae.    8815.     (s.4...io.o) 
R.  A.  22"  36™  6'        Decl.  +  39°  36' 

1910.509              15^43              69"95 
.529              15.65              69.66 
.548              15-90              69.45 

1907.68              139-28              63.30 

The  proper  motion  of  the  large  star  from  the  three  |3  posi- 
tions (1879-1907)  is: 
o''o7o    in    79?8 

From  meridian  observations: 
Newcomb      o''o8o    in     ioo?o 
Boss              0.078    in      98.9 
Auwers        0.067    >n    IOS-5 

11906.     22932.     (8.  7...  9.  2) 
R.  A.  22"  35m  50'       Decl.  +  29°  25' 

A  and  B 
1908.750           28o?7               2o"i2 
.766           281.2               20.01 
.769           281.4               20.16 

1910.53                15.66              69.69 

The  proper  motion  of  12  Lacertae  from  the  measures  (1881- 
1910)  is  : 
Measures      o"o37    in      52?8 
Auwers         0.023    in      82.6 
Boss              0.021     in    250.4 

11924.     TI  Pegasi.    p  1144.     (3.0.  ..10.  3) 
R.  A.  22°  37™  23'        Decl.  +  29°  36' 

A  and  BC 
1909.742            338?83              90"9I 
•744            338.59              91-12 
.760            338.85              90.7S 

1908.76             281.1               20.  10 

1909.742                 28l?I                      20"32 

.744           280.9              20.26 
.760           281.2              20.24 

1909.75             281.1              20.27 

A  and  C  (n.o) 
1908.750              I2?8                30^02 
.766              13.1                30.06 

.769                    12.2                      29.92 

I909-7S              338.76              90.93 

The  proper  motion  of  the  large  star  is  : 
Auwers         0^038    in     i83?9 
Boss              0.036    in     163.4 
Newcomb     0.040    in     158.5 

The  change  in  the  small  star  indicates  a  very  small  motion. 
The  measures  should  be  continued. 

11930.    O2477-    (7-2...  n.  i) 
R.  A.  22"  38m  16'        Decl.  +  45  °  24' 

A  and  C  (ii.o) 
1909.400           348?78            i77"55 
.438           348.50            I77-38' 
.458           348.55            177.63 

1908.76                      12.7                      30.00 

1909.742              12C.&               so"l4 

•  744                    12.2                      30.00 

.760             12.7              29.70 

1909.75              12.6              29.95 

No  evidence  of  material  change  in  AB.    The  other  measures 
of  C  are  of  late  date. 

11907.    HN.i4o.     (6.  5...  9.  i) 
R.A.22"35m5i'        Decl.  —  5°  44' 

A  and  B 
1911.529            262?97              73"8i 
.545            262.93              74.05 
.564            262.80              74.28 

1909.43             348.61            177-52 
C  and  c  (12.5) 
1908.400            I26?3                io"49 
.438            125-5                10.29 
.458            125.5                10.20 

1911.55              262.90              74.05 
The  only  other  measures  are  my  own  in  1901. 

1908.43              125.8                10.33 

291 


Burnham:   Measures  of  Proper  Motion  Stars 


The  only  other  measure  of  C  is  : 
1880.28           350?I4            I76"2i            2n            Bl 

These  positions  give  substantially  the  same  proper  motion  of 
A  as  that  derived  from  the  measures  of  AB,  but  in  view  of 
the  number  of  measures,  and  especially  the  shorter  time  in- 
terval, this  value  at  this  time  is  entitled  to  much  less  weight. 
Measures  of  AB      o''i8o    in    94^8 
Greenwich                0.181    in    94.1 

11931.    H53S9-     (9-.-  9+) 
R.  A.  22'  38™  34'        Decl.  —  4°  37' 

A  and  C  (12) 
1910.684           347°o               16*60 
.701            347.2               16.86 
•  739           345-6               16.55 

11942.    H  1807.    (8.5...  8.  5) 
R.  A.  22"  39™  29'       Decl.  +  67°  6' 

A  and  BC 
1910.760            i88?4                23*37 
•  777             189-0                23.07 
.780            187.8                23.68 

1910.77              188.4                23.37 
The  only  other  measure  is  that  of  1899. 

B  and  C  (=  Hu  92) 
1910.780            350?7                  o"88 

The  proper  motion  of  the  principal  star  is  : 
Schroeter      0*089    in    252?3 

11952.    22941.    (7.  5...  10.  2) 
R.  A.  22"  40"  7'       Decl.  +  18°  37' 

1910.681            2&4?3                11*41 
.698            265.0                11.22 
.701            264.2                11.31 

1910.71              346.6               16.67 

A  and  B 
1910.684             64?9               20*27 
.701             65.6               20.56 
•739             65.4               20.59 

1910.71               65.3               20.47 

Only  very  recent  measures.    The  magnitudes  given  here  are 
by  Herschel. 

11936.    p  450-    (7.0...  9.  2) 
R.  A.  22*  38"  40'       Decl.  +  38°  50' 

A  and  C  (12.5) 
1910.742            235?7               10*37 
.760           237.9               10-30 
•  777           235-8               10.56 

1910.69              264.5                11.31 

The  measures  by  2,  A  and  P  (1830-1910)  give  for  the  proper 
motion  of  A  : 
o"o34    in    62?8 

11957.    \Pegasi.    H  301.     (4-3---I2.3) 
R.  A.  22"  40™  42'       Decl.  +  1  1  °  33' 

A  and  C  (12.6) 
1907.711              I7?6o            138*32 
-731              17-65            138.06 
.750             17.00            138-65 

1910.76             236.5               10.41 

The  change  in  C  is  explained  by  the  proper  motion  of  AB 
(2  2942).    This  is  given  from  meridian  positions: 
Battermann      0*027    in    235°9 

The  measures  of  AC  (1878-1910)  give: 
0^024    in    i6g?8 

11938.     13  Lacertae.    02479.     (5.4...  10.8) 
R.  A.  22"  38™  44'        Decl.  +  41°  ll' 

1910.684            I28?5               14*77 
.698            129.8               14.83 
.701            129.2               14.79 

I907-73               17-42            138.34 

1912.810              I5°93            i4o"4S 
.813              16.42            140.56 
.867              16.43            140.22 

1912.83               16.26            140.41 

The  only  other  measure  of  this  star  is  : 
1879.52           2i?75            127733           2n            P' 

These  positions  give  for  the  corrected  proper  motion  of  the 
large  star  : 
0*541     in     155!  I 

From  the  catalogues  we  have  : 
Auwers         0^514    in     is8?9 
Porter           0.541     in     158.9 
Paris             0.528    in     157.2 
Boss              0.545    'n     '55-2 

1910.69              129.2               14.80 

No  relative  change.     The  proper  motion  of  13  Lacertae  is 
small: 
Auwers         0*035    in    290?! 
Newcomb     0.016    in    306.9 
Boss             o.oii    in    303.6 

292 


Burnham:   Measures  of  Proper  Motion  Stars 


11966.    02480.    (7.  5...  8.2) 
R.  A.22°4imi9s        Decl.  +  57°  27' 

1910.531             ii6?8s              30775 
.548             116.70              30.46 
.570            117.09              30.75 

11986.    p  1219. 
R.  A.  22h43m27'        Decl.  —  11°  42' 

The  Herschel  nebula  3™  50'  />  fj  1219  is  somewhat  diffused, 
but  brighter  in  the  center. 

h  2180  and  star  n.pm 
1909.534            I47°6              117722 
.630            147.7              116.67 
•703             147-0              115-89 

1910.55              116.88              30.65 

No  change.    The  proper  motion  of  A  is: 
Greenwich      o"o63    in     i8o°7 

11967.     T1  Aguarii.    22943.     (6.0...  9.  2) 
R.  A.  22°  4im  20'        Decl.  —  14°  41' 

1910.742            n6?26             26*36 
.760            117.61             25.97 
•777            117.08             26.19 

1909.62              147.4              116.59 

11997.    22947.    (7.  2...  7.  2) 
R.  A.  22"  44™  54'        Decl.  +  67"  56' 

This  may  be  a  pair  of  the  61  Cygni  type,  the  components 
having  slightly  different  proper  motions.    To  verify  the  motion 
of  A  as  given  from  meridian  positions,  I  have  connected  a 
faint  star. 

A  and  C  (ii.o) 
1910.720            2o6?57            109728 
•739            206.04            109.44 
.742            206.10            109.16 

1910.76             116.98             26.17 

No  third  star  available.     The  measures  of  the  small  star 
(1831-1905)  give  for  the  proper  motion  of  T1  Aquarii: 
0*065    in    87?7 

From  the  star  catalogues  we  have  : 
Auwers         0*019    in     i8o?o 
Hedrick        0.037    in     ni.8 
Boss              0.037    in     110.5 

11975.     H  1810.     (8.  5...  10.  4) 
R.  A.  22"  42™  22s        Decl.  +  57°  30' 

1910.531            355°4                2i"o9 
-548            355-5                20.69 

1910.73              206.24            109.29 

The  proper  motion  is  given  : 
Schroeter              0^146    in    66?6 
Groombridge         0.155    in    54.1 

11998.     H  3147.     (9.0...  12.0) 
R.  A.  22"  45m  5'        Decl.  +  72°  18' 

1912.411            239?7                29*87- 
.427            239.6                29.36 
.430            239.7                29.67 

1910.54              355-4                20.89 

The  components  of  H  1810  are  among  the  principal  stars  of 
h  2182.    The  DM  number  in  Part  I  of  the  General  Catalogue 
should  be  2607  instead  of  2617. 

11985.     T2  Aquarii.     H  VI.  97.     (4.  2.  ..9.  5) 
R.  A.  22"  43™  14'        Decl.—  14°  13' 

1910.742            294?53            132*66 
.760            294.70            132.71 
.777            204.28            132.71 
.780            294.53             132.33 

1912.42              239.7                29.63 

The  only  other  complete  measures  are  of  late  date.    Taken 
in  connection  with  Herschel's  angle  of  252?o  in  1830,  the  larger 
component  has  some  proper  motion. 

12008.    110482.    (6.  8...  6.  8) 
R.  A.  22"  45m  41"        Decl.  +  25°  45' 

AB  and  C  (9.0) 
1909.742            I98?50              5o"53 
.744            198-50              50.72 
.763             198.53              50.41 

1910.77              294.51             132.60 

The  measures  should  be  continued.    The  only  reliable  early 
measure  is  by  Dawes,  but  on  only  a  single  night.    Comparing 
that  with  the  present  position,  gives  for  the  proper  motion  of 
A: 
Measures      o''o6o    in     ig6?2 
Boss              0.039    in    204.0 
Auwers         0.047    'n    233-5 

1909.75              198.51              50.55 

The  only  other  measure  is  that  in  Part  II  of  the  General 
Catalogue. 

293 


Burnham:   Measures  of  Proper  Motion  Stars 


12019.     15  Lacertae.    f}  451.     (5.1.  ..12.0) 
R.  A..  22*  46"  37'       Decl.  +  42°  40' 

A  and  B 
1908.518            132^23             28T34 
.520            132.78             28.08 
.537            132.28              27.93 

A  and  C  (10.5) 
1907.638            279?9                24^33 
.695            279.6                24.34 
.731            280.0                24.36 
.750            281.0                24.17 

1907.70              280.1                24.30 
Probably  unchanged.    Measured  by  Doolittle  in  1906. 

12036.     ^382.     (6.0...  8.0) 
R.  A.  22"  48m  18'       Decl.  +  44°  7' 

AB  and  C  (10.7) 
1911.720            354?8                27^41 
•736            355-5                27.35 
-775            354-8               27.35 

1008.52              132.43              28.12 

The  five  measures  of  B   (1888-1008)   give   for  the  proper 
motion  of  15  Lacertae: 
o".i26    in    76?2 

From  the  star  catalogues  : 

Auwers          o!'oo7    in    85^9 
Boss               0.106    in    81.3 

A  and  C  (11.9) 

1908.518           309-89            I02':S6 
.520           310.00            102.91 
•537            309.67            102.89 

1911-74             355-0               27.37 

The  apparent  change  appears  to  be  due  to  a  very  small  proper 
motion  in  AB.    Further  measures  are  necessary  to  give  this  a 
definite  value. 
Groombridge       o"o2O    in    246?4 
Boss                    0.016    in    270.0 

12037.    2  2952  r*;.    (7-5-  •  -10.5) 
R.  A.  22"  48™  28'       Decl.  +  27°  23' 

1911.698            I36?8               I7?44 
.720            136.9               17.45 
.736            136.7               17-35 

1908.52             309-85            102.89 

A  and  D  (12.3) 

1908.518           227^5            127740 
.520           227.85            127.92 
•537           227.70            127-78 

1908.52             227.73            I27-70 
No  other  measures  of  C  and  D. 

12021.    22950.    (5.  7...  7.0) 
R.  A.  22*  46™  40'        Decl.  +  61°  3' 

,                A  and  C  (10.6) 
1910.720            354-23              39"°3 
•  739            353.83              39.17 
.742            3S4-58              39-12 

1911.72              136.8               17.41 
Probably  fixed. 

12038.    02(App.)238.    (6.5.  .-7-2) 
R.  A.  22"  48™  28'       Decl.  +  67°  2  1  ' 

1910.815           280^63             69706 
.818           280.80            68.95 
.838           280.88            68.96 

1910.73              354-21              39-  " 

For  the  proper  motion  of  AB. 
Bossert           o?ii6    in    69^8 
A.  G.  Hels.    0.115    in    71.2 
Boss               0.119    in    69.3 
Auwers           0.117    in    71.6 

12031.     Ho  191.     (8...  11.7) 
R.  A.  22*  47"  53'       Decl.  +  30°  / 

A  and  B 
1007.731             g\°7                3*14 
-750             87.9                3-17 

1910.82             280.77             68.99 

Unchanged  since  1875.     A  third  star  should  be  connected. 
The  principal  star  is  given  a  small  proper  motion. 
Schroeter      o?o7o    in     104^0 

12042.    2  2955  rej.    (7  .7  .  .  .11  .1) 
R.  A.  22*48°'  41'       Decl.  +  6°  37' 

1908.537           337°7               22T86 
.556           337-8               22.95 
•  559            337-5                23.04 

1908.55              337-7                22.95 
Change  doubtful. 

1907.74               89.8                3-15 

294 


Burnham:   Measures  of  Proper  Motion  Stars 


12044.    22954.    (9.0...  9.0) 
R.  A.  22"  48'"  51'        Decl.  +  14°  33' 

1907.485              25?  15              38'.'63 
.502              25.38              38.73 
.523              25.40              38.59 

12063.     22957.     (8.  6...  10.  4) 
R.  A.  22"  som  26'       Decl.  +  16°  49' 

A  and  C  (12.5) 
1911.644              56^76             T3i''oi 
•663              57.01             131.17 
•698              57.02             131.62 

1907.50                25.31              38.65 
One  of  these  stars  has  a  proper  motion  of  about  o"o33. 

A  and  DM  (14°)  4889 
1907.485           A  Decl.  7o"o 
.502                        69.8 

From  these  positions,  compared  with  those  in  A.  G.  Leip.,  it 
would  seem  that  the  proper  motion  is  in  B. 

12053.     H  974.     (8.7...  9-  7) 
R.  A.  22*  49m  20"        Decl.  +  4C  n' 

1911.698              87?68              43^83 
.720              87.38              44.11 
•755              87.52              44.18 

1911.67                56.93            131-27 
For  the  proper  motion  of  AB. 
A.  G.  Ber.      0*275    >n     I26?6 

12068.     16  Lacertae.    22960.     (6.0...  12.0) 
R.  A.  22"  50™  55'        Decl.  +  40°  58' 

A  and  B 
1912.581            345?3                27^40 
•583            345-3                27.73 
•619            345-2                27.55 

1912.59              345-3                27-56 

A  and  C  (9.0) 
1912.581              47?65              62^68 
•  583              47-53              62.89 
.619              47.70              62.78 

1911.72                87.53              44.03 

Further  measures  are  necessary  to  confirm   the  supposed 
proper  motion  of  A. 
A.  G.  Alb.      o''iio    in    2i3?7 

12056.    2  2956  re  j.     (9-.-IO) 
R.  A.  22"  49m  44'        Decl.  +  o"  42' 

A  and  B 
1910.490            is8?2               32*06 
•493            158.1                32.04 
.529            158.1                31.83 

1912.59               47.63              62.78 

A  and  B  appear  to  be  moving  together  as  there  is  no  sensible 
change  since  1831,  while  C  appears  to  be  fixed  in  space.    The 
four  positions  of  AC  by  2,  A  and  [5  (1831-1912)  give  for  the 
proper  motion  of  16  Lacertae: 

0*013    in     I3?2 

The  meridian  positions  give  a  different  direction,  and  dis- 
cordant values  of  the  annual  motion. 

Auwers         0*029    in    258?o 
Boss              0.008    in    223.3 

12078.     0452-     (7.0.  ..ii.  i) 
R.  A.  22"  51™  58'        Decl.  +  42°  22' 

A  and  C  (15.0) 
I9II-777              I5°8                9"83 

A  and  D  (13.8) 
1911.777            2i2?97              85^47 
.793            213.07              85.06 
.813            214.07             86.22 

1910.50              158.1                31.98 

A  and  C 
1910.490            278?3                68"27 
.493            278.3                68.47 
.529            278.2                68.16 

1910.50              278.3                68.30 

All  the  measures  are  of  recent  date.    The  magnitudes  are 
from  Herschel. 

12058.     P  383-     (8.0...  12.  7) 
R.  A.  22"  49™  57'        Decl.  +  8°  49' 

A  and  C  (12.4) 
1910.490            240?8                15"64 
.529            239.7                15-iS 
.570            240.0                16.04 
.586            240.0                15.88 

1911.79             213.37             85.58 

For  the  proper  motion  of  A. 
Greenwich     0*049    in    78?  I 
No  other  measures  of  C  and  D. 

1910.54              240.1                15.68 
No  motion  since  1877. 

295 


Burnham:   Measures  of  Proper  Motion  Stars 


12082.   H  3156.    (10. 9... ii. i) 
R.  A.  22"  52™  13'       Decl.  +  12°  28' 


1910.838 
.856 


2o8?8 
298.2 


17-57 


298-5 


17-53 


1910.85 
No  other  measures. 

H  3156  (A)    and  h  2194 
1910.838  2&8°4  I34?9 

k  2194  is  small,  diffused,  and  with  no  definite  center. 

12087.    H  3157.    (I0.5...H.O) 
R.  A.  22"  52™  26'        Decl.  +  53°  42' 
1910.815  37?6  15*10 

This  is  probably  the  pair  referred  to  by  Herschel.    It  is  in 
h  2196  which  is  made  up  principally  of  lorn  and  smaller  stars. 

12090.    02  536.     (7-0... 7-5) 
R.  A.  22"  52"  30'        Decl.  +  8°  43' 

AB  and  C  (9.6) 

1909.589  84° 28  239" 13 

.592  84.33  239-04 

.627  84.32  238.48 

.666  84.40  239.23 


1909.62 


84.33 


238.97 


C  and  D(n  o) 
1009.666     2i8°oo     H5''6o 

.687     217.92 115-69 

1909.68  217-96  115-64 

From  the  three  measures  of  C  by  O2,  H2  and  P  (1852-1909) 
the  proper  motion  of  the  binary  is : 

ol'.tu    in     H2?2 

The  proper  motion  of  the  system  from  the  star  catalogues  is 
given : 

07397    '"    lll°5 
110.5 


Porter 

Kustner 

Glasgow 

Paris 

Boss 

No  other  measures  of  CD. 


0.397  in 

0.399  in  109.9 

0.408  in  112. o 

0.421  in  lll.O 


12121.    2  2972  rtj.    (9-3.-.H-7) 
R.  A.  22'  56"  34'        Decl.  —  o°  23' 


1910.436 

•  452 
.400 


I42°6 
143.6 
143-6 


15-87 
15-75 


1910.46 


143-3 


15-79 


Change  is  certain;  probably  a  small  proper  motion  in  A. 
The  complete  measures  are  of  recent  date.  No  third  star 
suitable. 


12125.    2  Andromcdae.    p  1147.     (5.0.  ..8. 7) 
R.  A.  22"  S7m  5"        Decl. +  42°  7' 

AB  and  C  (13.6) 

1911.777  I9i°73  9o"23 

•  793  I9L33  90.63 

.813  191.80  90.79 


1911.79 

1912.622 
.638 
.657 


191.62 

I02?20 

I9L93 
191.90 


90.55 

89?95 
90.27 

90-35 


1912.63 


I92.OI 


90.19 


No  other  measures  of  the  faint  star.    The  proper  motion  of 
the  binary  is  given  in  the  star  catalogues : 

Auwers  0^041    in    iog?8 

Groombridge       0.065    in      99-8 
Boss  0.062    in      96.5 


12130.    02  485  rej.    (6.0... 9.0) 
R.  A.  22"  57-°  34'        Decl.  +  54°  35' 

A  and  B 
1911.736  50°o  20^75 


•  775 

•  777 


5o°o 
50.8 
50.9 


20.81 
20.73 


1911.76  50.6  20.76 

Some  change  from  proper  motion  in  A. 

A.  G.  Harv.      0^015    in    270°o 

A  and  C  (9.5) 

1911.736  8o?43  56*41 

•  775  79-90  56.35 

•777  80.35  56.60 


1911.76 


80.23 


56.45 


No  other  complete  measures  of  this.    There  is  an  error  of 
180°  in  the  angle  of  AC  by  Madler. 


12134.    P  Pegasi.    H  1842.    (2.2...n.i) 
R.  A.  22'  57™  56*        Decl.  +  27°  26' 

A  and  B 
1910.452  2og?88  105*81 


.471 
•  473 


209.43 
209.80 


105.01 
105.17 


1910.47 


1910.471 
•  473 
.400 


209.70 

A  and  C 
97°50 
97-55 
97-53 


105.33 


255" '0 
256.08 
255-42 


1910.48 


97-53 


255-53 


296 


Burnham:   Measures  of  Proper  Motion  Stars 


For  the  proper  motion  of  p  Pegasi  we  have: 

Measures  of  B  o"243  in  52?! 

Measures  of  C     0.224  in  47.8 

Auwers  0.218  in  52.5 

Greenwich  0.218  in  52.4 

Newcomb  0.236  in  55.1 

Boss  0.233  in  55.2 

The  measures  of  the  small  stars  should  be  continued. 


12170.     02  488  r*/-     (7.0.. .10.7) 
R.A.23him3is       Decl.  +  19°  56' 


1910.780 
.838 
.856 


334-2 
333-6 
335-2 


14-05 
14.00 


1910.82  334.3 

No  sensible  change  since  1865. 


13-97 


12171.     P  1025.     (8.0... 10.8) 
R.  A.  23"  im  38'        Decl.  +  12°  l' 

AB  and  C  (11.9) 
1909.760  83?9S  2i'T75 


.763 
.780 
.782 


83.75 
83.94 
84.24 


21.56 
22.14 
21.85 


1909.77 


83.97 


21.83 


h  2214  and  star  12. 7m 

1909.760  227?45  I2o"25 

.763  227.05  119-95 

.780  228.07  119.64 

.782  226.90  120.15 


1909.77 


227.37 


The  last  is  4m  exactly  following  p  1025;  small,  diffused  and 
some  brighter  in  the  middle,  and  bisection  fairly  accurate. 


12172.     22976.     (8.3... 10. 2) 
R.  A.  23"  im  38'        Decl.  +  5°  57' 

C  and  D  (8.8.. .12.2) 

1908.750  247?8o  132712 

.785  247.97  131-98 

.788  248.15  131.12 

.804  247.90  I3I-57 


1908.78 


247-95 


131-70 


This  measured  to  show  whether  or  not  C  has  any  proper 
motion. 
The  apparent  motion  of  A  from  the  measures  of  AC  (1828- 

1905)  is : 

0^054    in    253? i 


12179.    4  Andromedae.    H  1849.     (5. 6. ..10.6) 
R.  A.  23"  2m  io"       Decl.  +  45°  44' 


1909.818 
.821 
.838 


346?8o 
346-63 
347-18 


47''86 
47-86 
47.84 


1909-83 


346-87 


47-85 


As  the  first  measure  of  this  is  on  a  single  night,  relative 
motion  is  uncertain.  The  measures  should  be  continued.  The 
proper  motion  of  A  is  small : 

Auwers  o''o3i     in     I93?9 

Groombridge       0.054    m    210.2 
Boss  0.030    in     189.9 


12180.     H  979.     (8.5... 10.2) 
R.  A.  23"  2™  21s        Decl. +  21°  28' 


I9H.583 
.644 
.663 


2i6°.g 
217.8 
218.0 


18*48 
18.30 

18.47 


1911.63 


217.6 


18.42 


Probably  unchanged.     Herschel's  distance  in  1830  was  too 
small. 


12184.    22984.    (7.5...IO.O) 
R.  A.  23"  2m  58'        Decl. +  70°  i' 

A  and  C  (13.0) 

I9IL545 

•  564 
.567 


8i?67  75"4i 

81.63  74-32 

80.90  74.60 


1911-56 


81.40 


74-78 


For  verification  of  the  proper  motion. 

Schroeter      o"o68    in    147^8 


12196.     nCephei.    02489-     (S-2---7-S) 
R.  A.  23"  4"  5*        Decl.  +  74°  44' 

AB  and  C  (12.8) 
1911.602  240^90  s8"57 


.622 
.625 

.644 


240.37 
239.97 

240.43 


58-23 
58.88 
58.59 


1911.62 


240.42 


58-57 


The  only  other  measures  of  the  Herschel  companion  are  my 
own.  Later  observations  are  necessary  for  correction  of  the 
proper  motion  of  it  Cephei. 

Auwers  o"o37  in  i8o?5 
Newcomb  0.033  in  164.8 
Boss  0.028  in  154.8 


297 


Burnham:   Measures  of  Proper  Motion  Stars 


12202.    2  Cassia  feiae.    8823.     (6.0...  9.  4) 
R.  A.  23"  4™  37'        Decl.  +  58°  41' 

1912.675            i62?89            167"  i  i 
.695            162.95            167.07 
.698            162.90            167.13 

AB  and  D 
1894.79           28i?3             47^30            in            Ho 
1906.68           279.7             50.27           2n            Doo 
1908.27           280.54           49-75           3n            P 
1912.69           280.34           50.13           3n            p 

12222.     H  3176.     (9.  2...  9.  2) 
R.  A.  23"  6m  52'       Decl.  +  1  1  °  54' 

1910.529            i64°4                26*94 
.570            164.5                26.84 
.586            164.5                26.93 

1912.69              162.91            167.10 

The  P  measures  (1881-1912)  of  the  small  star,  which  is  too 
faint  for  the  DM,  give  for  the  proper  motion  of  2  Cassiopeiae: 
0*041    in    I52?o 

This  will  be  confirmed  hereafter  by  observations  of  the  20" 
companion  first  measured  in  1904.     The  motion  from  transit 
positions  is  very  uncertain  : 
Auwers               0*007    in    I73?6 
Davis                    0.009    in     175.0 
Groombridge       0.018    in    319.8 
Boss                     0.014    in    344.5 

12205.     0852.     (7.0...) 
R.  A.  23"  4™  51'       Decl.  +  25°  52' 

A  and  BC 
1912.504            283?07             58"36 
.507           282.55             58.15 
.526           282.63             58.17 

1910.56              164.5                26.90 
No  early  measures  of  this. 
h  2214  and  star  12.6  m 

1910.529                 227?2                    120*9 
.586                 227.2                    120.  1 

1910.56                    227.2                    120.5 

h  2214  is  about  15'  n  of  H  3176. 

12229.    22992.    (7.  5...  9.  2) 
R.  A.  23"  7™  24'       Decl.  +  39°  21' 

A  and  B 
1910.684           285^3               14*43 
.698           285.2               14.03 
.701            285.1               14.15 

1912.51              282.75             58.23 

There  is  no  apparent  change  in  the  position  of  the  double 
companion  since  1881. 

12214.    Ho  197.    (8.0...  8.  3) 
R.  A.  23'  5™  44'       Decl.  +  37°  24' 
AB  and  C  (9.4) 

1907.879           328?42             4i"i3 
8.460           328.48             40.76 
8.482            328.27             40.98 

1912.675            328.12             41.05 
.695            328.13             41-02 
.698           328.00             40.77 

AB  and  D  (10.0) 
1907.879           28o?48             49*78 
8.460           280.48             49-63 
8.482            280.67             49-84 

1912.675            280.40             50.08 
,695            280.28             50.16 
.698           280.33             50.15 

C  is  DM  (37°)  4084.    The  measures  of  the  distant  stars  are 
conflicting  in  distance,  and  change  is  uncertain.    The  follow- 
ing are  all  the  measures  : 

AB  and  C 
1894.79           329°5            42*56           in           Ho 
1906.68           329.1             41.67           2n            Doo 
1908.27           328.39           40.96           3n            P 
1912.69           .uS.oS           40.95           3n            P 

1910.69             285.2               14.20 
Apparently  without  change. 

A  and  0(13.5) 
1910.684            343°95              50*72 
.701             343-30              51.51 
.703            342.65              50.94 

1910.70              343-30              51-06 

For  the  proper  motion  of  A. 
Greenwich      o"o84    in     101?] 

12230.    2  2991  n?./.     (7.0..  .10.0) 
R.  A.  23'  7™  24'        Decl.  +  10°  25' 

1911.813            358?i               32*92 
1.835            358.3                33-59 
1.870            359-1                33.06 
2.810            358.7                33-45 
2.813            359-3                33-47 
2.829            358.8               33-70 

1912.33              358.7                33-36 
No  early  measures. 

298 


Burnham:   Measures  of  Proper  Motion  Stars 


12234.    22993.    (7.0... 7- 8) 
R.  A.  23"  7™  47s        Decl.  —  9°  35' 

A  and  C  (9.1) 

1908.556  115^26  I2i?88 

•573  II5-4S  122.50 

•597  115-70  122.49 


1908.58 


"5-47 


122.29 


C  is  SD  (9°)  6152.     From  the  measures  of  AC  the  proper 
motion  of  AB  is : 

0*46 1    in    89?4 

From  the  catalogues : 

Paris  0^569    in    103^0 

Boss  0.558    in      94.7 

Later  measures  of  AC: 

1911.663  iT5°85  I2i"25 

.720  115.63  121. ii 

.736  115.60  121.40 


1911.71 


115-69 


121.25 


12236.    H  981.    (9.0... 12. 5) 
R.A.23"7msi»        Decl. +  2°  13' 

1908.482  28i?o  i7':8s 

•559  279.4  17-89 

•573  281-4  17-94 


1908.54 


280.6 


17.89 


This  pair  was  wrongly  identified  in  1905,  and  the  measure 
given  in  Part  II  of  the  General  Catalogue  belongs  to  another 
star. 


12237.    p  714. 
R.  A. 23" 7m  56'        Decl.— 3°  17' 

h  2220  is  about  28'  distant  nf;  diffused,  and  little  brighter  in 
the  middle. 

h  2220  and  SD(3°)55o8 
1910.589  83?!  i6s"86 

.608  82.6  166.35 


1910.60 


82.8 


166.10 


12247.    H  983.    (8. 7... 9. 2) 
R.A.23h8m35"        Decl. +  31°  7' 


1910.684 
.698 
.701 


158.1 
157.4 


l6"83 
17.04 
16.68 


1910.69  157.3  16.85 

There  is  a  13. 5m  star,  318^8 : 20^7  from  A 


12257.    ip1  Aquarii.    0  1220. 
R.  A.  23"  9™  36"        Decl.  —  g°  44' 

BCand  E  (9.0. .  .12.5) 
1908.597  358?i  i8".3i 

•633  357-7 

•671  357-3 


18.46 
18.29 


1908.63 


357.7 


18.35 


Rejecting  my  single  measure  in  1877,  the  three  positions  give 
for  the  proper  motion  of  BC,  which  is  exactly  the  same  as 
that  of  ty1  Aquarii: 

0^375    in    89^4 

From  meridian  positions,  we  have  for  ty1  Aquarii: 
Auwers  o"35o    in    ox>?8 

Boss  0.367    in    92.0 

Porter  0.348    in    92.1 

Paris  0.378    in    72.6 


12265.     22995.     (7- 7... 8.0) 
R.  A.  23"  iom  24'       Decl.  —  2°  15' 


1910.684 
.701 
•  703 


31.2 
32-3 
29.5 


4-89 
4-95 


1910.70 


31-0 


4.87 


No  change;  the  position-angle  by  2  is  too  small.    The  Hd 
pair  could  not  be  found. 


12267.     H  3181.     (P.I...IO.O) 
R.  A.  23"  iom  27"        Decl.  +  52°  19' 

A  and  B 
i8?8 
19-3 
18.9 


1909.742 
•744 
.760 


22717 
22.18 
22.21 


1909.75          19.0         22.19 

A  and  DM  (52°)  34«7  (9-o) 
1909.742      49?20     I53'8i 

•744 
.760 


49.10  154-05 

48.78  153-89 


1909.75 


49-03 


I53-92 


The  positions  of  the  distant  star  seem  to  indicate  that  if  A 
has  any  proper  motion  at  all,  it  is  in  a  direction  opposite  that 
given  in  A.  G.  Harvard  as  o"ioi  in  ox>?o. 

1875  49°3  I52"3  A.  G.  Harv. 


12272.     H  3180.     (9-4- -.12. 2) 
R.  A.  23"  iom  37'        Decl.  +  9°  37' 


1908.636 
.652 
.671 


263.7 
263.4 


23.01 
23-05 
23-07 


1908.65  264.0  23.04 

No  other  measures.    Herschel's  angle  in  1830  was  253^1. 


299 


Burnham:   Measures  of  Proper  Motion  Stars 


12274    0  182.    (8.  7...  8.  9) 
R.  A.  23"  iom  52'       Decl.  —  14°  28' 

AB  and  C  (12.5) 
1908.750             7i?34             76*10 
.824             71.12             75.46 
.826             71.28             75-54 
.882             71.83             75.80 

For  the  proper  motion  of  AB.    No  other  measures. 
Auwers           o"o23    in    70?! 
Boss               0.047    in    87  6 

12290.     f}8o.     (8.2...  9.  i) 
R.  A.  23"  I2m  45'        Decl.  +  4°  45' 

AB  and  C  (10.8) 
1906.753               2?o             I03"87 
6.755               1-7             104.03 

7.562                      2.1                    I03.8l 

7.638               1.8             104.01 
7.657               1.7             103.98 

1908.82               71-39             75-73 

1910.760              70?83              77*24 
.838              69.31              77-53 
.931              70.18              78.04 

1910.84               70.11             77-6o 

I  have  given  in  the  General  Catalogue  the  proper  motion  of 
AB  from  the  measures  of  C  (1898-1903).     A  continuation  of 
these  measures  will  reduce  the  error. 
1*306    in    I99?o 

AB  and  D 
1910.760            i67?20            147*35 
.780            167.10            146.97 
.818            166.70            146.912 

1907.27                 1.86            103.94 

1910.838               i?o8            104*14 
.856               0.73            104.15 
.893               i.  21            104.03 

1910.86                 i.  01            104.11 

AB  and  D  (9.5) 

1906.753            33i°4              188*55 
6.755            331-3              188.10 
7.638            331-2              188.88 
7.657            331-3              188.66 

1910.79             167.00            147.08 

With  the  position  of  D  in  1902,  the  proper  motion  of  A  is  : 
i"353    in    207^2 

At  present,  because  of  the  longer  time  interval,  the  value 
from  the  measures  of  C  should  be  the  best. 
Porter           1*302    in    201  ?2 
Romberg       1.297    in    200.4 
Radcliffe       1.331     in    202.5 

12285.    8  Andromedae.    p"  7'7-    (5-O...I3-O) 
R.  A.  23"  12™  1  1'        Decl.  +  48°  22' 

A  and  C  (10.3) 
1908.826            130^61            219*28 
.845            131-04           219.37 
.862            130.95            219.41 

1907.20              331.30            188.55 

1910.838           33i?i5            190*12 
•856           331.00            189.50 
.893           331-35            190.08 

1910.86             331.17            189.90 

From  all  the  measures  of  the  faint  stars  (1891-1910)  we  hav 
for  the  proper  motion  of  the  binary  system  : 
AC        R.  A.  +  0*414       Decl.  —0*032 
AD                    0.468                    0.113 

+  0.441                 —0.072 

Therefore  the  corrected  proper  motion  of  0  80  is  : 
0*447    in    99-3 

Some  of  the  values  from  the  catalogues  are  : 
Stumpe         0*534    in    IO2°3 
Boss              0.509    in     101.2 
Porter           0.480    in    100.5 
Paris             0.520    in     103.6 

12296.    96  Aquarii.    H  5394-     (6.  3  .  .  .  1  1  .  2) 
R.  A.  23*  13™  io'       Decl.  —  5°  47' 

1910.742              2i?9                10*46 
.760              23.6                10.55 
.777             22.  S               10.44 

1908.84              130.87           219.35 

The  following  is  the  only  prior  observation  : 
1880.28            130^67           219*41            2n            Bl 

The  proper  motion,  if  any,  of  8  Andromedae  is  small  and 
uncertain  : 
Auwers         0*024    >"     "9°8 
Boss             0.038    in      81.0 

12289.    95  Aquarii.    Ho  199-     (5-2---"-5) 
R.  A.  23"  i2m  43'       Decl.  —  10°  16' 

A  and  C  (13-0 
1912.562            23i!35            129:63 
.695            230.40            130.11 
.752            230.10            130.52 

1910.76               22.7               10.48 

No  suitable  third  star  for  proper  motion.    B  has  the  sam 
motion  as  the  bright  star. 
Auwers          o"i66    in    89^3 
Paris               0.191     in    90.0 
Boss                0.193    in    94.7 

1012.67             230.46            130.06 

300 


Burnliain:   Measures  of  Proper  Motion  Stars 


12304.    o  Ccphd.    23001.    (5.  2.  ..7.  8) 
R.  A.  23"  13'"  41'        Decl.  +  67°  27' 

A  and  C  (13.1) 
1912.408                3?oo              45*54 
.411                4.70              45.50 

12320.    H  3185  =  h  2234. 
R.  A.  23"  is"1  36'        Decl.  +  8°  14' 

h  2234  and  star  13.  3m 
1909.760            i63?3                21*55 
.763             161.8               21.41 

.427                3.00              45.62 

1909.76              162.5                21.48 

1912.41                  3-87              45-55 

Xo  other  measures  of  C.    The  small  relative  motion  in  AB 
implies  a  system  of  the  61  Cygni  class. 
For  the  proper  motion  of  the  large  star  we  have  : 

Auwers           0*054    in    83^6 
Schroeter        0.059    m    85.1 
Boss                 0.066    in     75.0 

There  is  no  star  in  the  nebula. 

12325.    64  Pegasi.    P  718.     (5.0...  8.  7) 
R.  A.  23"  16'°  3"        Decl.  +  31°  9' 
AB  and  C  (13.0) 
1912.504            I46?75             112*90 
.507            147.07             112.89 
.526            146.90            112.80 

12305.     O2(App.)244.     (6.0...  9.3) 
R.  A.  23"  I4m  3'        Decl.  +  47°  43' 

1910.473            301^05              84*56 
.509            300.97              84.64 
.531             301.18              84.45 

1912.51               146.91             112.86 

For  the  proper  motion  of  the  binary   system.     From  the 
catalogues  we  have: 
Auwers         0*020    in     144^2 
Boss              0.023    'n     156.8 

1910.50              301.07              84.55 

The  proper  motion  of  the  principal  star  from  all  the  meas- 
ures to  1910,  and   from  meridian  positions,  not  cited  in  the 
Genera!  Catalogue  is: 

Measures       o"225    in    78?o 
Auwers           0.174    in    73.3 
Boss                0.206    in    81.3 

For  a   further  independent  value  of  this   motion,   I  have 

12332.     23007.     (6.  5...  9-5) 
R.  A.  23"  16™  46'        Decl.  +  19°  54' 

A  and  C  (n.o) 
1909.802            3ip?27              78*23 
.818            319-25              77.98 
.821            319-26              78.59 

measured  a  third  small  star: 

A  and  C  (n.o) 
1910.509             104^25             I36"47 
.548            104.37            136.41 

1909.81              319.26              78.27 

1911.602            319^20              78*79 
.622            318.90              78.65 
.644            319-01              78.78 

1910.53              104.31             136.44 

12317.    23006.    (8.  5...  9.0) 
R.  A.  23"  ism  24'        Decl.  +  34°  47' 

A  and  B 
1912.465             i6s?2                  s'.'69 
.507             165.0                  5.62 

1911.62              319.04              78.74 

These  measures  do  not  sensibly  change  the  proper  motion  of 
A  given  in  the  General  Catalogue  from  the  measures  to  1905. 
With  the  later  positions  this  motion  is  : 
0*287    in    86?  i 

The  motion  from  meridian  positions  appears  to  be  too  large  : 
Paris               0*337    in    po0o 
Boss                0.319    in    93.4 

1912.49              165.1                  5.65 

One  of  the  components  of  2  3006,  presumably  the  brighter 
one,  has  a  proper  motion  of  0*023  in  276?!.    To  make  certain 
which  it  is,  I  have  connected  a  faint  star. 

A  and  C  (11.2) 

12336.     H  3188.     (9.0...  11.  5) 
R.  A.  23"  I7m  8'        Decl.  +  11°  47' 

1910.490            249?!                20*87 
•493            249.3                21.20 
.570            247.3                20.97 

.504              18.68              78.18 
•  507              18.73              78.09 

I9IO.52                   248.6                      21.  OI 

No  early  measures.    About  4'"  /  H  3188,  same  declination,  is 

1912.49                18.71              78.06 

A  2242.    The  Rosse  nebula  near  this  was  not  seen. 

20 


301 


Burnham:   Measures  of  Proper  Motion  Stars 


h  2242  and  DM  (11°)  5002  (9.5) 
1910.586  263^28  127*40 

.589  264.02  126.68 

1910.59  263.65  127.04 

There  is  an  error  in  the  Strasburg  R.  A. 

I897-93  263°7  126^60  Kobold. 


12338.     H  5397.     (7-0... 8.3) 
R.  A.  23' 17°  24'       Decl.  —  15°  8' 


1910.608 
.627 
.644 


337-15 
337-23 
336.98 


65"73 
65.82 
65.56 


1910.63 


337-12 


65.70 


One  of  these  stars  has  some  proper  motion.  From  the 
measures  by  Gla  and  (J  (1892-1910)  the  apparent  proper  motion 
of  the  larger  star  is : 

o"i28    in    230?4 

A  third  star  should  be  connected  with  A  or  B. 


12343.    2  3oio.    (8.o... 8. 7) 
R.  A.  23"  17™  45'        Decl.  +  45°  8' 

B  and  C  (12.2) 

1910.605  I04?8  27^75 

.608  104.5  27-93 

.628  104.7  28.57 


1910.61 


104.7 


28.08 


C  not  moving  with  the  others.    The  measures  are  too  recent 
to  give  an  accurate  value  of  the  motion  of  AB. 
Stumpe  o"i72    in    95?o 

Argelander  0.191     in    93.0 

Kustner  0.167    in    98.2 

Porter  0.169    in    90.0 


12351.    H  5308.     (9.4... 9.6) 
R.  A.  23"  19™  2"       Decl.  —  17°  54' 


1908.633 
.671 
-75° 


4?o 
3-4 
3-1 


29-43 
29.16 
29-40 


12354.     4  Cassiope iae.     (5. 2... 8. 5) 
R.  A.  23"  19'"  30'        Decl.  +  6 1  °  37' 

A  and  C  (9.5) 

1912.526     257?6o  2I5"J3 

.545     258.15  215.11 

.562     258.42  215.05 


1912.54 


258.09 


C  and  D  (10.5) 
1912.526  37?o 

-545  38-6 

•562  37-7 


215-13 


9-03 
9-58 


1912.54 


37-8 


9-41 


The  only  other  measures  are  my  own.  The  proper  motion 
of  4  Cassiopeiae  is  uncertain  : 

Auwers  o''oi7    in  158?! 

Groombridge       0.027    m  125.6 

Newcomb  o.oio    in  196.8 

Boss  0.014    in  123.5 


12361.     H  3193.     (9-5-.  -io.  i) 
R.  A.  23"  20m  2'       Decl.—  12°  18' 


1908.573 
.633 
.636 


217.8 
218.5 


34-34 
34-55 
34-56 


1908.61  218.2 

Only  the  measures  of  1892. 


34.48 


12363.    Ho  489.    (8.0... 8.0) 

R.  A.  23"  20™  4'       Decl.  +  27°  3' 

AB  and  C  (7.5) 


1910.608 
.627 
.644 


194-85 
194.94 


63.37 
63.20 


1910.63  194-87  63.27 

No  change  in  the  wide  pair  since  1875. 

h  2240  and  star  10.5  m 

1910.586  27I?2  10l7s 

270.6  100.5 


.608 

.644 


271.7 


102.9 


1908.68 


3-5 


29-33 


This  is  SD  (18°)  6306.    The  place  in  Part  I  of  the  General 
Catalogue  is  substantially  correct.    No  other  measures. 


12353.    H  3192.    (9.4--  -9-7) 
R.  A.  23'  I9m  27'        Decl.  —  17°  35' 


1908.633 
.671 
-750 


n6?6 
116.3 
116.6 


27:30 
27.23 
26.96 


1908.68 

X"  other  measures. 


116.5 


27.16 


1910.61  271.2  101.6 

h  2240  is  about  40'  s  of  Ho  489. 

1887.80  27i?3  102^8  Eng 

12365.     H  1877.     (12.4. ..14. 8) 
R.  A.  23"  20"1 6'        Decl.  +  4 1  °  52' 

A  and  B 
1908.482  357°4  2oTi2 


•  575 
.636 


356.0 
357-0 


20.44 
19-85 


1908.56 


356.8 


20.14 


302 


Buriihani:   Measures  of  Proper  Motion  Stars 


II  1877  (A)  and  It  2241 
1908.444            243?3                so"o7 
.482            243.6                50.38 

1910.720            3i3°03              2o"o6 
•739            312.50              19.68 
.760            313-28              19.74 

.518            243.4                50.66 

1910.74              312.94              19-83 

1008.48              243.4                50.37 

This  is  a  well  known  planetary  nebula  (Dreyer  7662)  with 
the  minute  star  in  the  center,  which  is  characteristic  of  all 
nebulae  of  this  class.    The  central  star  was  rated  15  m  in  my 
measures  at  Mt.  Hamilton.     This,  like  many  of  the  central 
stars    in    the    planetary   nebulae,    and    similar   attendants   to 
bright  stars,  is  a  test  of  atmosphere  rather  than  aperture,  and 

The   proper   motion   of   A    is   uncertain    in    direction    and 
amount;  I  have  therefore  connected  a  third  faint  star. 

A  and  C  (12.1) 

1007.351                 202?9                      46^88 

.444            203.3                46.37 
.463            203.0               46.71 

at  times  is  beyond  the  reach  of  the  largest  telescopes.     On 
the  occasion  of  the  foregoing  measures  it  was  not  well  seen 
owing  to  the  unsteady  condition  of  the  air.     The  prior  meas- 
ures of  h  2241  and  the  principal  star-of  H  1877  will  be  found 
in  Pub.  L.  O.  II  p.  167.    There  is  no  suggestion  of  any  change 

1907.42              203.1                46.65 

1910.720            203°so              46^63 
-739            202.93              46.28 
.760            203.48              46.23 

in  the  last  fifty  years. 

12366.     866485.     (6.  7...  12.  2) 
R.  A.  23°  20m  16'        Decl.  —  22°  24' 

1908.671             I3i?3                  5^03 
.826             129.6                 5.15 

1910.74              203.30              46.38 

A.  G.  Chris.          o"o26    in    p6?7 
Battermann            0.013     in    40.9 
Schroeter              0.026    in    57.0 
Boss                       0.053    in    40.9 

1908.75              130.4                 5-09 

The  proper  motion  of  the  large  star  is  given  : 
Boss      0*036    in    8s?2 

12369.    v.  Piscium     S  830     (5  o      10  6) 

12381.     23014.     (8.  i...  10.  4) 
R.  A.23"2im52"        Decl.  +  10°  29' 

1907.540           28o?2                8"io 
.562            281.8                7.91 
.657            281.7                 8.01 

R.  A.  23"  2om  46S        Decl.  +  o°  36' 

A  and  B 
1907.540            344°  13             i6o'/9i 
•559            344-25             161.33 
.562            344-25            161.05 

I907-59             281.2                8.01 
There  appears  to  be  a  slight  increase  in  the  distance. 

12384.    O2(App.)246.    (7.  3...  8.  2) 

1007-55              344-21             161.10 

For  the  proper  motion  of  the  principal  star. 
Measures  of  AB        o"i69    in     152^0 
Auwers                       0.109    in     144.7 
A.  G.  Nice.                 0.119    in     148.9 

R.  A.23"2ims8s        Decl.  +  22°  55' 

A  and  B 
1907.810            ii4°33              86^74 
.845            114.23              86.80 
.865            114-45              86.80 

Boss                            0.124    'n     J36-5 

B  and  a  (13.2) 
1907.540            I53?7                75^92 
.675             154.2                76.50 

1907.84              114-34              86.78 

1911.602            ii4°53              86"8i 
.622            114.41              87.03 
.625             114.70              87.48 

•  731             153-6                76.00 

1911.62              114-55              87.11 

1907.65              153.8                76.14 
No  other  measures  of  the  small  star. 

12372.    (5386.    (6.  5...  ii.  9) 

A  and  C  (10.9) 

1907.845             I56?38            I35"47 
7.865             156.68            135.82 
8-479            156.47            I35.5I 

R.  A.  23*  21™  13'        Decl.  +  70°  i' 

A  and  B 
1907.351            3i3°6                I9"9i 
.444            313-2                19-77 
.463            312.8                19.72 

1908.06              156.51             135.60 

B  and  C 

1907.845             I95°35              92"4r 
7.865             195-68              92.02 
8.479            195-93              92.57 

1907.42              313.2                19.80 

1908.06              195.65              92-33 

303 


Burnham:   Measures  of  Proper  Motion  Stars 


1911.602            io6°45             92*93 
.622            195.83             91-68 
.625            i95-8o             92.43 

12411.     23022.     (8.0...  9.  7) 
R.A.23h25m9'        Decl.  +  57°  45' 

A  and  p  1151  (9.6) 
1910.815             i89?70            ii6"8o 
.818            189.73             117.16 
.838            189.98            116.96 

1911.62              196.03             92.38 

The  third  star  is  connected  to  get  hereafter  the  separate 
proper  motions  of  the  large  stars.    This  is  given  by  Rechen- 
berg: 
A        0^067    in    iis?5 
B        0.020    in    310.5 

The  apparent  motion  of  A  from  the  measures  of  B  (1875- 

1903)  's  : 
0*122    in    n6?o 

12393.    H  311.    (10.  7..  .11.  8) 
R.  A.  23*  22™  57'        Decl.  +  16°  40' 

A  and  B 

1909.534           289?!               2i?6o 
.630           291.4               21.  18 
.703            291.7               21.79 

1910.82              189.80            116.97 
No  change  since  1889. 

12415.    O2  498  rej.    (7-2...io.o) 
R.  A.  23"  25™  38'       Decl.  +  51°  45' 

1910.684            244?3                171'oS 
.698            243.4                17-04 
.701            242.8                17.18 

1910.69             243.5               J7-IO 

The  proper  motion  from  A.  G.  Harvard  of  o''o75  in  90°  is 
probably  incorrect,  as  the  distance  of  the  lorn  star  should  in- 
crease more  than  3"  since  1866. 

12434.     V  60,  App.  I.     (6.4...  6.  5) 
R.  A.  23"  28™  i  '       Decl.  +  59°  47' 

As  it  is  uncertain  which,  if  only  one,  of  these  large  stars  has 
the  proper  motion,  I  have  measured  a  faint  star  from  each. 

A  and  a  (10.2) 
1910.471            136^07            I35TI9 
-473            135-95            135-00 
.548            135-93            135-10 

1909.62             290.7               21.52 

H  311  (A)    and  h  2247 
1909-534            229?3              145:49 
.630            229.6              145-36 
.703            229.0              145.31 

1909.62              229.3              145-39 

The  only  other  measures,  in  1904,  are  given  in  the  General 
Catalogue,    h  2247  is  the  object  referred  to  by  Herschel  in  his 
note  on  H  311. 

12398.     11987.     (9.5...  11.  o) 
R..A.23I'23"144<       Decl.  +  31°  34' 

1910.452            28i?o                13749 
.473            281.8                13.50 
.586            282.9                13.41 

1910.50              I35.98            135-10 

B  and  b  (n.8) 
1910.471            309^23             82^63 
-473           309.12             82.09 
.548           309-47             82.69 

1910.50             309.27             82.47 

The  apparent  motion  of  A  from  the  measures  of  AB  (1835- 
1904)  is: 
0^091    in    78?4 

No   proper   motion    found    in   the   several   star   catalogues 
examined. 

12441.    p  388.    (6.5...  12.0) 
R.  A.  23"  28™  52'       Decl.  +  37°  22' 

1908.520           333-1               20^33 
•575            333-4                20.17 
•594            333-4               20.24 

1910.50              281.9                13.47 
h  2246  is  20'  tip  H  987;  faint,  diffused  and  small. 

h  2246  and  star  13.  5m 
1910.452            I78?2               4  1  To  i 

12400.    H  3197.    (9.  7...  9.8) 
R.  A.  23"  23"  51'       Decl.  —  17°  57' 

1908.633            309?3                 8T20 
.671            308.9                8.19 
.750           307.8                8.29 

1908.56              333-3                20.25 

Apparently  a  little  change  from  proper  motion.     Nothing 
found  in  the  star  catalogues  referred  to. 

1908.68             308.7                8.23 
Apparently  unchanged. 

304 


Burnham:   Measures  of  Proper  Motion  Stars 


12465.    H  316.    (6.  9...  10.  8) 
R.  A.  23"  31'"  27'        Decl.  —  13°  44' 


I909-534 
•570 
.666 


94°o 
93-0 
93.2 


33"o7 
32.78 
32.80 


1909.59 


93-4 


32. 


h  2261,  which  is  77'  /  and  7'  «  of  H  316,  is  fairly  bright  in  the 
center. 

h  2261  and  star  12. 6m 
1909.534  224 ?43  I55"23 

.570  224.65  153-56 


1909.55 


224.54 


154-39 


12467.    H  3208.    (9.5...  9.6) 
R.  A.  23"  31™  35"        Decl.  +  8°  50' 


1907.657 
•673 
.675 


153-8 
153-4 


1175 
12.06 


1907.67 
No  other  measures. 


153.7 


11-92 


12468.     O2  500.     (6. i... 7.0) 
R.  A.  23"  31™  40°        Decl.  +  43°  46' 

AB  and  C  (10.7) 

1912.583  335°io  "5"87 

-619  334-93  116.13 

.622  334-96  115-52 


1912.61 


334-50 


115.84 


No  other  measures  of  C.  The  close  pair  is  a  long  period 
binary.  The  only  proper  motion  found  for  the  large  star  is 
the  following : 

Greenwich      o"o38    in     ioo?5 


12479.     23028.     (7-0...  9.  5) 
R.  A.  23"  32'"  37'        Decl.  +  34°  22' 


1911.471 
.509 
.529 


202?6 
203.8 
202.7 


17.34 
17-42 


1911.50 


203.0 


17.41 


From  six  positions  by  2,  A,  En,  Hu  and  P  on  21  n  (1829- 
1911)  the  motion  of  the  principal  star  is: 

0*028    in    224?5 


12481.     H  5411-     (9-4-.  -9-6) 
R.  A.  23"  32™  46"        Decl.  —  2°  46' 


1907.657 
.673 
.675 


4i?7 
41.1 
41.6 


16728 
16.49 
16.44 


1907.67 
Probably  unchanged. 


41.5 


16.40 


12495.     Espini49-     (8. 3... 8. 5) 
R.  A.  23"  34"-  iS"        Decl.  +  63°  39' 

1907.636 
.638 
-695 


I20?7 
121.  i 
121.  8 


5.65 
5.53 


1907.66  121.  2 

No  other  complete  measures. 


5.66 


12497.     v.  Andromedae.    H  i 

R.  A.  23"  34™  30'        Decl.  +  43°  40' 

A  and  B 

1909.742  I9i°95 

192.23 
192.28 


.744 
.760 


(4.3...ii.o) 


46.90 
46.91 


1909.75  192.15 

A  and  C  (n.o) 
1909.742  294?38 

.744  204.33 

.760  294.29 


46.76 


ios'.'4i 
105.57 
105.58 


1909.75 


294.33 


105.52 


From  the  three  sets  of  measures  of  the  small  stars  (1879- 
1909)  we  have  the  proper  motion  of  A : 

AB        R.  A.  +  0*091        Decl.  —  o"oi3 
AC  0.077  0.017 

+  0.084  — 0.015 

Hence  the  most  probable  motion  of  A  is : 
oToSs    in     loo? i 

From  transit  positions : 

Newcomb  o?o88  in  io6?l 

Auwers  0.075  m  110.3 

Boss  0.083  in  106.9 


12501.     Ho  303.     (8.0...H.O) 
R.  A.  23"  34m  45'        Decl.  +  19°  42' 

A  and  C  (11.2) 

1912.504      3?33  I02?i2 

•507       3.28  101.77 

.526      3.07  101.94 


1912.51 


3-23 


101.94 


305 


Durnham:   Measures  of  Proper  Motion  Stars 


The  proper  motion  of  the  principal  star  is  said  to  be : 
A.  G.  Her.     o"22O    in    74^2 

No  other  measures  of  C. 


12510.     P  389-     (7- 7-.. 8.2) 
R.  A.  23' 35™  18"        Decl. +  3i°S4' 

AB  and  C  (12.8) 
1908.692  $i?7  23721 

9.666  52.0  23.31 

23-34 


9.706 


52.6 


1909.35  52-1  23.29 

No  material  change  in  this  since  1881,  and  it  is  therefore 
certain  that  the  binary  has  no  sensible  proper  motion. 


12517.     O2503.     (7- 2... 7- 8) 
R.  A.  23"  35"  59"       Decl.  +  19°  3«' 

A  and  C  (13.8) 

1911.644  233^46  3872I 

.663  233.38  37-86 

.720  233.98  37.52 

1911.67  233.61  37.86 

Very  faint  star  for  the  proper  motion  of  AB.     No  other 
measures. 

A.  G.  Ber.     0^103    in    237?o 


12523.    eo*  Aquarii.    $279.     (S.D...II.O) 
R.  A.  23' 36"  30'       Decl.— 15°  12' 


1910.760 
.818 
.838 


85!8 
84.8 
85.0 


5'-77 
S-34 
5.38 


1910.81 


85.2 


S-SO 


No  third  star  near  enough.    The  companion  is  moving  with 
the  other.    The  proper  motion  of  the  large  star  is : 
Auwers         0^091     in     I3i?4 
Boss  0.106    in     124.6 


12536.     Espin  150.     (9. 8...  10. 7) 
R.  A.  23' 38"' 24'        Decl. +64°  23' 


1907.807 
.810 
.845 


33-0 
3-2.1 
33-9 


3.23 
3.76 
3-23 


1907.82  33.0 

Krror  of  180°  in  angle  by  Ks|.in. 


3.41 


12538.    II  3_>n.    (8. 9... 9.0) 
R.  A.  23"  38™  50'        Decl.  +  3°  & 


1910.586 
.589 
.605 


82^65 

83.05 
82.86 


48.41 
48.43 


1910.59 


82.85 


48.24 


One  of  these  stars  has  a  proper  motion  of  about  o'.'29  in  238" 
(±  180°).  The  measures  should  be  continued,  and  a  third  star 
connected. 

h  2267  is  im  40"  directly  /  H  3211. 

h  2267  and  star  lo.8m 
1910.589  I04?5  189"! 


12552.    2  3039.     (7- 3... 9-7) 
R.  A.  23"  40'"  49"        Decl.  +  27°  45' 

A  and  B 
1910.605  33?2  32^41 


.608 
.628 


33-0 
33-2 


32.92 
32.81 


1910.61  33.1  32.71 

There  is  no  third  near  star  for  the  micrometer. 


A  and  DM  (27°)  4621 
1910.32        AR.  A.  53?  34        A  Decl.  46^7 
1875  53.35  48.1 


A.  G.  Camb. 


These  positions  tend  to  prove  that  the  proper  motion  of  A  is 
in  Declination,  as  shown  from  the  measures  of  AB,  and  not 
in  R.  A.  as  given  from  meridian  positions. 

Measures  of  AB    0*038    in     174^0 
Kustner  0.026    in    272.1 


12559.    P  727-    (7.0... 12. 5) 
R.  A.  23*  41™  26'        Decl. +  24°  55' 


1912.755 
.791 

-793 


3I4.S 
316.1 


16.65 
16.88 


1912.78 


315-6 


16.82 


No  change  in  the  position  of  the  small  star  unless  a  small 
advance  in  the  angle. 


12561.     P  390.     (8.3...H.8) 
R.A.23'4in'33'       Decl. +48°  38' 


1911.698 
•  775 

•777 

I9II-75 
Change  uncertain. 


232.1 


232.4 


17.00 
16.90 

17.06 


306 


Durnliain:   Measures  of  Proper  Motion  Stars 


12563.    23041.    (7.  3...  8.2) 
R.  A.  23"  41'"  45'        Decl.  +  16°  25' 

A  and  B 

I907-597            35i°5                63"?8 
.657            35I-S                63.95 
.673            351-4                63.87 

h  2265  and  star  1  1  .  9  m 
1909.703             I04?8                 70"  I 
.706             103.7                 71-3 
.760             105.8                 69.8 

1909.72               104.8                 70.4 

This  is  about  1*4°  «/>  "2  3040.    A  prior  measure  gives  : 
1868.78           I04?8           7177            in           Hd 

12573.     O2  507.     (6.  8...  7.  5) 
R.  A.  23"  42-"  51'        Decl.  +  64°  13' 

A  and  B 
1908.711            266?9                 o"67 
.750            269.5                  0.64 
.769            270.6                 0.64 

1907.64              351.47              63.87 

A  and  C  (8.1) 
1907-597            352°i                67717 
.657            351-8                67.46 
-673            352.0                67.16 

1907.64              351-97              67.26 

These  positions  with  the  three  prior  measures  of  A  and  BC 
(1832-1907)  give  for  the  apparent  proper  motion  of  BC: 
o'.'oox)    in     I28?2 

From  meridian  positions: 
A        o"o3i     in      33?6        A.  G.  Ber 
0.040    in      20.7        Rechenberg 
BC        0.106    in     124.4        A.  G.  Ber 
0.096    in     118.5        Rechenberg 

It  is  at  least  probable  that  the  change  is  wholly  due  to  the 
motion  of  BC. 

12564.    2oPiscium.     8835.     (5.8...  8.  6) 
R.  A.  23"  41™  46'        Decl.  —  3-26' 

A  and  B 
1911.663            284?88            I73"22 
.720            285.25             172.70 
.755            285.00            172.74 

1908.74              269.0                 0.65 

AB  and  C  (7.8) 
1908.709            352?9S              49^27 

.711            352-43              49-37 
.728            352.42              49.15 

1908.72              352-6o              49.26 

C  is  bright  enough  to  have  some  motion,  but,  if  any,  it  is 
very  small.    The  measures  of  O2,  A  and  p  (1847-1908)  give  for 
the  apparent  motion  of  AB  : 
Measures             o"oig    in     IO4?7 
Greenwich           0.027    in     np.o 

12575.     6  Cassiopeiae.    O2  508.     (5.  7...  8.  2) 
R.  A.  23"  43"'  o1        Decl.  +  6i°33' 

A  and  C  (10.8) 
1912.622            309?  30              62?25 
.638            309.20              62.42 
-657            309.25              62.59 

1911.71              285.04            172.89 

A  comparison  of  the  position  by  South  in   1824  with  the 
measures  of  1900  and  1911,  implies  a  motion  in  A  of  o"o§2  in 
32?7,  but  owing  to  the  uncertainty  of  the  early  distances,  and 
the  possibility  of  some  motion  in  B,  this  result  should  be  con- 
firmed by  further  observations.    I  have  therefore  connected  a 
faint  star  with  B. 
B  and  C  (12.5) 
1911.775            277^89              52^35 
•  777            278.10              52.02 
.813            277.73              52.17 

1912.64              309.25             £2.42 

No  other  measures  of  C.    The  principal  stars  appear  to  have 
a   small   common   proper   motion,   with   no   sensible   relative 
change. 
Auwers                o"oig    in    238?7 
Groombridge       0.035     in     224.2 
Boss                     o.oio    in    246.6 

12581.     H  5423-     (6.0...  12.4) 
R.  A.  23"  43m  37'        Decl.  —  26"  o' 

1910.627            309?3                13*45 
.681            308.8                12.83 
.760            308.8                13.49 

1911.79              277.91              52.18 

From  the  star  catalogues  : 
Auwers           o7o72    in    87% 
Boss                0.095    in    86.4 

12567.     2  3040.     (9.0...  9.0) 
R.  A.  23"  42m  o'        Decl.  +  9°  29' 

1909.725            2i8?o                 4:39 
.742            218.2                  4.37 
.744            218.0                 4.43 

1910.69              309.0                13.26 

The  prior  measures  of  this  pair  are  discordant.    Not  in  Boss' 
General  Catalogue. 

1909.74              218.  i                  4.40 

307 


Burnham:   Measures  of  Proper  Motion  Siars 


12593.    H322o.    (9. 5... 9-6) 

R.A.23045mi5'        Decl.  +  l°45' 


1907.657 
.673 
.675 


I8?2 

18.9 
18.2 


32772 
32.78 
32.64 


1907.67  18.4 

Probably  no  real  change. 


32.71 


12608.    p  996.    (6. 8... ii. 7) 
R.  A.  23"  46"  34'        Decl.  +  74°  S3' 

A  and  C  (9.0) 
1907.845  i3i°97  163*20 


.865 
.867 


131.78 
131-63 


162.84 
163.21 


1907.86  131.79  163.08 

With  the  measures  by  Engelhardt  in  1894,  we  have  for  the 
proper  motion  of  AB : 

07325    in    79-7 

The  proper  motion  of  the  bright  star  is  given  in  the  cata- 
logues : 

Greenwich      0*336  in    82  ?4 

Porter  0.288  in    81.8 

Boss  0.333  in    81.0 

Later  measures: 

1910.644  i3i°7o  162^50 

.660  131-83  162.92 

.666  132.00  162.89 


1910.66 


131-84 


162.77 


12615.    O2s".    (6.8... n. o) 
R.  A.  23"  47™  8'        Decl.  +  60°  2' 

A  and  C  (n.o) 

1911.698  I29?7S  69*22 

.720 
-736 


129.95 
130.17 


69.45 
69.19 


1911.72  129.96  69.29 

For  the  proper  motion  of  AB.    There  is  a  14 m  star  near  A: 
1911.72  39?4  36*02 

The  motion  of  A  is  uncertain  from  the  meridian  observa- 
tions : 

Greenwich  0*012    in      94?8 

Battermann         0.024    >n    209.6 

A  and  P  1153  (AB) 

1911.698     245?88     176730 

.720     245.72     176.16 

•736  245-90  J76.79 

1911.72  245.83  176.42 

No  change  in  this  since  my  measures  in  1889. 


12618.    O2(App.)25i.    (6. 3... 9.0) 
R.  A.  23"  47"'  31'        Decl.  +  50°  51' 

A  and  B 
1910.720  20o?s8  43*65 


-739 
-742 


200.33 
200.70 


43-95 
43-54 


1910.73 


200.54 


A  and  C  (ii.i) 
1910.720  129? 50 

.739  128.00 

.742  129.33 


43-71 


50*10 
50.32 
50.02 


1910.73 


129.24 


50.15 


Change  from  proper  motion  of  A.     The  measures  of  AB 
(1875-1910)  give: 

Measures        0*076    in    83^2 
Greenwich      0.066    in    79.6 


12639.    23046.    (8.0... 8. 5) 

R.  A.  23"  50™  15'       Decl.  —  10°  10' 

A  and  B 


1909.744 
.780 
.782 


25L4 
250.7 


3-19 
3." 


1909.77 


251-5 


3-14 


As  this  appears  to  be  a  pair  of  the  61  Cygni  type,  I  have 
connected  a  very  faint  star. 

A  and  C  (13.0) 

1909.780  232^10  114721 

.782  232.20  114.24 


1909-78 


232.15 


114.22 


No  other  measures  of  C.    The  proper  motion  of  A  is  given: 

Stumpe         07352    in    248^5 
Paris  0.288    in    270.0 


12645.    P  1224.     (6.6...  13- 3) 

R.  A.  23"  50™  53'       Decl.  +  55°  10' 

A  and  C  (11.7) 


1912.619 
.622 
.638 


356?70 
356.90 
356.80 


77"5o 
76.68 
77-33 


1912.62 


356.80 


77-17 


For  the  proper  motion  of  A.    This  from  the  star  catalogues 
is  very  uncertain: 

Auwers  o7o28    in    206?  I 

Groombridge       0.030    in     101.5 


308 


Burnham:   Measures  of  Proper  Motion  Stars 


12651.     02512.     (6.  6...  io.  9) 
R.  A.  23"  51™  18"        Decl.  +  60°  22' 

1910.586            292^7                 3"24 
.608            291.6                  3.21 
.627            292.8                  3.61 

12663.     R  Cassiopeiae.    Espin  37. 
R.  A.  23*  52™  19'        Decl.  +  50°  43' 

A  and  B  (11.8.  .  .13.8) 
1910.678            272?9                14712 
.701            272.6                13.85 

1910.61              292.4                  3.35 

The  proper  motion  of  A  is  : 
Battermann      o"o29    in    248?! 

h  2285  is  io'  n;  many  small  stars,  and  of  no  special  interest. 

1910.69              272.7                13.98 

A  and  C  (10.5) 
1910.678            330?o                27785 
.681            331.6                27.62 
.684            331-0                28.00 

12654.     H  321.     (7-5-..  n.  2) 
R.  A.  23"  51™  38'        Decl.  +  10°  48' 

1911.813             I32?6                20793 
.835             133-2                21.  ii 
.870            132.9                20.75 

1910.68              330.9                27.82 

The  only  other  measures  are  given  in  the  General  Catalogue 
Part  I.    The  principal  star  is  variable. 

12666.     o  Cassiopfiae.    23049.     (5-4-..7-5) 
R.  A.  23"  52"'  55'        Decl.  +  55°  5' 

1911.84              132.9                20.93 
No  early  measures. 

12655.    23047.    (8.7...  8.  7) 

A  and  C  (10.5) 
1  909  .493              66  ?9O            1  09748 
.570              66.87             109-37 
.573              66.85            109-60 

R.  A.  23"  51™  50"        Decl.  +  56°  43' 

A  and  C  (12.5) 
1909.744            i8g?8                 7''98 
.760            190.3                 7-92 
.763            189.3                8.29 

1009-55                66.87            109.48 

A  prior  measure  is  : 
1879.79           66?68           110737           2n           Bl 

The  proper  motion  of  the  large  star  is  very  uncertain,  anc 
the  measures  of  AC  should  be  continued. 

1909.76              189.8                8.06 
Change  uncertain. 

12656.    23048.    (7.  7..-  8.8) 
R.A.23h5im57"        Decl.  +23°  41' 

A  and  C  (10.0) 
1909.760            242?68              46772 
.780            242.52              46.51 
.782            243.17              46.52 

Measures  of  C    07032    in      45?o 
Auwers                0.018    in    214.5 
Groombridge       0.034    in      74-7 
Boss                     0.012    in     114.2 

12673.    H  3229.     (io.5...ii.o) 
R.  A.  23"  53"'  18"        Decl.  +  6°  26' 

1909.627             I44°9                 8"i8 
.630            143-5                  7.78 
.725             142.9                 8.39 

1909.77              242.79              46.58 

The  only  other  measure  is  that  in  G.  C.  Part  II.    The  two 
positions  give  for  the  proper  motion  of  A  : 
Measures      ol'igs    in     196?.  i 
Stumpe         0.198    in    203.8 
Porter           0.182    in    201.2 

Further  measures  of  C  should  be  made. 
12657.     H  995.     (8.5...ii.o) 

1909.66              143.8                 8.12 
No  other  measures. 

12675.    2  3050.    (6.0...  o.o) 
R.  A.  23"  53™  23"        Decl.  +  33°  4' 

A  and  C  (12.8) 
1909.744            288?8o              82728 
.763            288.90              82.20 
.780            288.85              82.07 

R.  A.23B5im58'        Decl.  +  27°  59' 
1907.485              i8?6                6728 

•  540                    17.5                         6.12 

.559             18.0                6.04 

1909.76              288.85              82.18 

One  of  the  nearly  equal  components  of  2  3050  has  a  sma 
proper  motion  of  about  07026  in  160°  (±  180°).    Later  meas 
ures  of  the  small  star  will  show  whether  it  is  A  or  B,  if  onl 

1007-53               18.0                6.15 
Change  is  probable. 

The  general  motion  of  the  two  large  stars  is  given  : 
Boss     o7io6    in    220?5 

309 


Burnliain:   Measures  of  Proper  Motion  Stars 


12685.    H  1923.    (H.O...H.4) 
R.  A.  23"  54™  16"        Dccl.  +  50°  3' 

1910.605            277?9                I2"i8 
.608            278.7                1  1.  60 
.627            280.3                U-53 

The  nine   positions   of   D  (1878-1907)  give    for   the   proper 
motion  of  85  Pegasi: 

1*317    in     i3S?o 

The  close  agreement  of  this  value  with  that  found  from  the 
measures  of  AC  is  very  satisfactory  when  the  shorter  interval 

1910.61              279.0                H-77 

H  1923  is  in  h  2292;  of  which  the  principal  stars  are  DM 
(49°)  4303-4-5.    No  other  measures. 

12693.    OZ(App.)254.    (6.  3...  7-7) 
R.  A.  23"  55m  8'        Decl.  +  59°  4»' 

A  and  B 
1909.438              89^60              58*62 
•  473              89-25              38-52 

are  taken  into  account. 
From  the  measures  of  AC  (1851-1905)  : 
i".2S6    in     I39°5 

Some  of  the  values  from  meridian  observations  arc  : 
Argelander    1*390    in     735?! 
Madler            .376    in    133.3 
Brunnow         .259    in     133.6 
Auwers           .288    in     139.7 
Porter             .287    in     138.9 
Boss                 .292    in     139.8 

1909.46                89.42              58.57 

A  and  a(  9.8) 
1009.438            323^83             I55"87 
•473            323-85             155-68 

Later  measures  of  AD  : 
1910.678            293^25              g6"73 
.681            293.13              97.11 
.701            293.72              96.74 
.739            293.70              96.82 

•493              3^3-97              '55-°^ 

1909.47                323.88              155-72 

B  and  b  (9.9) 

1909.438            I29°45             134*47 
.473             129.28            134-34 
.493             129.77            134-42 

12703.    110209.    (8.5...  ii.  o) 

1909.47              129.50            134-41 

For  the  small  stars  we  have  : 
I879-47           323?96           I56T46           3"           Bl 
1879.47           129.59           134-24           3n           Bl 

R.  A.  23"  56™  12'       Decl.  +  32'  18' 

A  and  C  (13.0) 
1908.826            140^6               i7?86 
9.706            139-7               17-74 
9.742            139-3               17-74 

proper  motion  of  the  large  stars  found  in  the  catalogues. 

12696.     1  1  11  60.    (8.  5...  8.9) 
R.  A.  23"  55"  17'        Decl.  +  38°  58' 
1907.695            3i6?5                 0*31 
Rapid  motion  ;  a  difficult  pair. 

12701.     85  I'eSasi.    P  733-     (6.0.  ..12.  5) 
R.  A.  23"  55"  54'       Decl.  +  26"  27' 

Aanrl    f*  (f\  f)\ 

1909.42              139.9               17-78 

Change  uncertain. 
1906.53            139?!            I7"72           3n            Doo. 

12704.     23053.     (6.0...  7.  3) 
R.  A.  23"  56™  27'       Decl.  +  65°  26' 

A  and  C  (10.8) 

1911.698           289?98             98*54 
.720           290.20             98.28 
.736           289.75             98-69 

1907.638            338?20              43:'78 
.657            338.45              43-72 
.673            338.36              43-70 

1911.72             289.98             98.50 

1912.619            289?go              98*31 
.622            289.55             98.55 

1907.66             338.34             43-73 

.638           290.00             99.03 

A  and  D  (13.0) 
1907.657            291  ?90              93?  34 
.673            292-90              93.38 
.675            292.50              94.08 
.692            292.20              'M.88 

1912.62             289.82             98.63 

For  the  common  proper  motion  of  AB.    The  catalogues  leave 
this  very  uncertain. 

Auwers         0*034    in     ioo°4 
Schroeter      0.015    in     180.0 

1907.67              292.38              93.67 

Boss              0.017    in     106.6 

310 


Burnham:   Measures  of  Proper  Motion  Stars 


12709.    |3  281.    (7.S...II.O) 

R.  A.  23"  56m  38'        Decl.  +  I  °  28' 

A  and  C  (n.o) 

1910.586  335?o                33':59 

•589  334-2                33-/S 

•605  333-7 34-55 

1910.59  334-3  33-97 

The  proper  motion  of  AB  from  the  measures  of  C  to  1898 
will  not  be  materially  changed. 

Measures      o!'o95    in     I54?o 
Boss  0.079    in     154.1 

12716.     (?  861.     (9. 4... 9.7) 
R.  A.  23"  56™  55'  .      Decl.  +  69°  2' 

A  and  B 
1907.692 


•  731 
-750 


177-8 

175-5 


1. 35 

1.42 
1.41 


1907.72  176-9  1-39 

A  and  C  (13.4) 

1907.731  47?3  i6':72 

.750  46.1  15.88 

1907.74  46.7  16.30 

There  is  another  star  13.  8m  near  A,  273^3  :  i6"8. 

12724.     2  3055-     (7-0...  ii.  2) 
R.  A.  23"  57m  51'        Decl.  +  11°  29' 

A  and  C  (12.4) 
1912.867  3i°73  .          I22"8s 


.890 
.925 


31.77 
31.10 


122.70 
122.15 


1912.89  3I-53  122.57 

For  the  proper   motion   of   the  principal   star.     No   other 
measures.    No  change  in  AB. 

12731.    23056.    (7. 4... 7. 4) 
R.  A.  23"  58™  30'        Decl.  +  33°  36' 

AB  and  C  (9.0) 

1912.810  359°4  22"o6 

•813  359-0  22.88 

.829  359.8  22.98 


1912.82 


359-4 


22.94 


AB  and  D  (9.7) 

1912.810  238?oo  95"59 

.813  238.15  96.00 

.829  237.95  95-45 


1912.82 


238.03 


05.68 


12740.     02547.     (8.  3...  8.  3) 

R.  A.  23"  59"'  12s        Decl.  +  45°  9' 

A  and  C  (13.0) 


1911.468 
.529 

•545 


218.4 
218.4 


38.18 
38.10 


1911.51  218.2  38.18 

A  and  D  (n.o) 


I9II-433 
.468 
.487 


I74°88 
175.23 
175-75 


85-54 
86.14 


1911.46      175-29 

A  and  E  (n.o) 


I9H-433 
.468 
.487 


6o?68 
60.40 
60.65 


85.89 


86':  17 

86.35 
85.08 


1911.46 


00.58 


86.17 


For  the  proper  motion  of  A.  This  is  a  system  of  the  61 
Cygni  type,  the  two  equal  components  having  slightly  different 
proper  motions.  From  the  star  catalogues  we  have : 

Stumpe  o"8g7    in    g8?7 

Porter  0.887    in    98.4 

Paris  0.929    in    97.9 

From  the  measures  of  AB  (1876-1905)  the  relative  motion 
of  B  is: 

o"o595     in    207^0 

Fu-rther  measures  of  the  faint  stars  will  give  an  independent 
value  of  the  proper  motion  of  A. 


12741.    02(App.)255.     (7. 8... 8. 2) 
R.  A.  23"  59m  14'        Decl.  +  15°  40' 


1912.829 
.867 


337.40 
337-07 


«9"34 
.38.74 
89.23 


1912.85  337-15  89.10 

No  change  since  the  measures  by  Dembowski  in  1874. 

12750.     23060.     (8. 5... 8. 7) 
R.  A.  23*  59m  47'        Decl. +  17°  25' 

A  and  C  (n.o) 
1912.755  262?is  8o"7o 


.791 
.793 


262.15 
261.80 


80.15 
80.83 


1912.78 


262.03 


80.56 


I  have  given  in  the  General  Catalogue  the  proper  motion  of 
the  close  pair  from  the  measures  of  C  (1831-1904).    The  later 
observations  will  not  sensibly  change  that  result. 
o'.'o36     in     205!  7 

There  are  no  other  measures  of  D. 


2  3060  appears  to  belong  to  the  61  Cygni  type,  with  a  very 
small  relative  rectilinear  motion,  and  I  have  therefore  meas- 
ured a  third  star  for  the  proper  motion  of  A.  This  has  been 
given : 

Battermann      o'.'262     in     22g?7 


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